CN104754445A - Panoramic multichannel acoustic image trajectory control method - Google Patents
Panoramic multichannel acoustic image trajectory control method Download PDFInfo
- Publication number
- CN104754445A CN104754445A CN201310754538.7A CN201310754538A CN104754445A CN 104754445 A CN104754445 A CN 104754445A CN 201310754538 A CN201310754538 A CN 201310754538A CN 104754445 A CN104754445 A CN 104754445A
- Authority
- CN
- China
- Prior art keywords
- acoustic image
- audio amplifier
- node
- output level
- trajectory control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to the audio frequency technology, and specifically relates to a panoramic multichannel acoustic image trajectory control method. The control method utilizes a console to set an output level value of each loudspeaker box node in a physical loudspeaker box system for allowing the acoustic images to move or to stand still within a set total duration based on set manners. The method comprises the following steps: generating acoustic image trajectory data; adjusting the output level of each physical loudspeaker box based on the acoustic image trajectory data within the total duration set by the acoustic image trajectory data; and within the total duration, superposing an input level that is inputted to each physical loudspeaker box signal with the output level of the corresponding physical loudspeaker box, thereby acquiring an actual output level of each physical loudspeaker box. The panoramic multichannel acoustic image trajectory control method utilizes the acoustic image trajectory data to adjust and control the actual output level of each physical loudspeaker box, accordingly generating the set movable or static effects of the acoustic image trajectory within the total duration set by the acoustic image trajectory data.
Description
Technical field
The present invention relates to Audiotechnica, specifically a kind of panorama multiple channel acousto is as method for controlling trajectory.
Background technology
The movement of the virtual sound image that acoustic image track produces when referring to audio amplifier system plays in performance or variation path.The Professional sound box system of existing video display, stage, after audio amplifier position is fixing, to be amplified by the left and right passage master of stage both sides or acoustic image is roughly set in the middle position of stage by main the amplifying in left, center, right three road, although performance site is except the master on stage amplifies, the audio amplifier of One's name is legion is also provided with in each position, but whole field is performed, the acoustic image of sound box system almost seldom can change, and therefore controlling video display, the acoustic image positions of stage Professional sound box system and trail change thereof is flexibly technical issues that need to address.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of panorama multiple channel acousto that can control video display, the acoustic image positions of stage Professional sound box system and trail change flexibly as method for controlling trajectory.
For solving the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of panorama multiple channel acousto as method for controlling trajectory, this control method is arranged by the output level value of control desk to each audio amplifier node of entity sound box system, acoustic image to be moved or static by the mode of setting in total duration of setting, and this control method comprises:
Generate acoustic image track data;
In the total duration corresponding to this acoustic image track data, according to acoustic image track data, adjust the output level of each audio amplifier entity;
In this total duration, the output level of the incoming level and corresponding audio amplifier entity that input to each audio amplifier physical signal is carried out superposing the level obtaining the actual output of each audio amplifier entity;
Described acoustic image track data comprises change rail acoustic image track data, variable domain acoustic image track data and audio amplifier link data, wherein:
Described change rail acoustic image track data obtains by the following method:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Divide delta-shaped region: according to the distribution of audio amplifier node, audio amplifier distribution map is divided multiple delta-shaped region, three summits of each delta-shaped region are audio amplifier node;
Setting acoustic image TRAJECTORY CONTROL point and path of running: the path of running that acoustic image is time dependent is set in audio amplifier distribution map, and is positioned at this several acoustic image TRAJECTORY CONTROL points of running on path;
Editor's acoustic image TRAJECTORY CONTROL point attribute: the attribute of acoustic image TRAJECTORY CONTROL point comprise acoustic image TRAJECTORY CONTROL point coordinates position, the corresponding moment, to the time needed for next acoustic image TRAJECTORY CONTROL point;
Record becomes rail acoustic image track data: record each audio amplifier node and to run the output level numerical value in each moment in process in acoustic image path of running along setting;
Described variable domain acoustic image track data obtains by the following method:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Setting acoustic image is run path divide acoustic image region: in audio amplifier distribution map, arrange multiple acoustic image region, each acoustic image region comprises several audio amplifier nodes, and arranges the path of running in each acoustic image region of traversal;
Editor's acoustic image attribute zone time, comprises the moment corresponding to acoustic image region, to run total duration to next acoustic image region required time and acoustic image in current acoustic image region;
Record variable domain acoustic image track data, records each audio amplifier node and runs at acoustic image successively in the process in each acoustic image region along setting path of running, the output level numerical value in each moment;
Described audio amplifier link data obtains as follows:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Audio amplifier node link relation is set: selected ultralow frequency audio amplifier node is connected to neighbouring multiple full-range cabinet nodes;
Record audio amplifier link data: calculate and record the output level DerivedTrim of described ultralow frequency audio amplifier, this output level DerivedTrim=10*log (Ratio)+DeriveddB, Ratio=∑ 10 (Trim-i+LinkTrim-i)/10, wherein to be the output level value of arbitrary described full-range cabinet node i self be Trim-i, what LinkTrim-i was the former setting of full-range cabinet node i described in this and ultralow frequency audio amplifier links level, DeriveddB is the initialization level value of described ultralow frequency audio amplifier node, DerivedTrim is the output level value after described ultralow frequency audio amplifier node sets links to described some full-range cabinet nodes.
Compared with prior art, beneficial effect is as follows: carry out regulable control by the level of acoustic image track data to the actual output of each audio amplifier entity, can generate the acoustic image orbiting motion of setting or static effect in the total duration set by acoustic image track data.
Accompanying drawing explanation
Fig. 1 is the step schematic diagram of panorama multiple channel acousto as method for controlling trajectory of embodiment.
Fig. 2 is that the change rail acoustic image track data of embodiment generates method step schematic diagram.
Fig. 3 is the audio amplifier distribution map of embodiment and becomes rail acoustic image track schematic diagram.
Fig. 4 is the triangle audio amplifier node schematic diagram of embodiment.
Fig. 5 is that the variable domain acoustic image track data of embodiment generates method step schematic diagram.
Fig. 6 is audio amplifier distribution map and the variable domain acoustic image track schematic diagram of embodiment.
Fig. 7 is that the fixed point acoustic image track data of embodiment generates method step schematic diagram.
Fig. 8 is that the audio amplifier connection data of embodiment generates method step schematic diagram.
Fig. 9 is the audio amplifier link schematic diagram of embodiment.
Embodiment
Below in conjunction with accompanying drawing, the acoustic image TRAJECTORY CONTROL that the present invention is all types of is further described.
As shown in Figure 1, the present embodiment provides a kind of panorama multiple channel acousto as method for controlling trajectory, this control method is arranged by the output level value of control desk (main control system) to each audio amplifier node of entity sound box system, acoustic image to be moved or static by the mode of setting in total duration of setting, and this control method comprises:
S101: generate acoustic image track data;
S102: in the total duration corresponding to this acoustic image track data, according to acoustic image track data, adjust the output level of each audio amplifier entity;
S103: in this total duration, carries out superposing by the output level of the incoming level and corresponding audio amplifier entity that input to each audio amplifier physical signal the level obtaining the actual output of each audio amplifier entity.
Acoustic image track data refers within the time period of preseting length (i.e. total duration that acoustic image continues), run or keep motionless to make the acoustic image that in audio amplifier distribution map virtual on control desk, each virtual audio amplifier node output level is formed along the path preset, the time dependent output level data of each audio amplifier node.Namely acoustic image track data contains the output level delta data of whole audio amplifier nodes within this preseting length time period in audio amplifier distribution map.For each audio amplifier node, in this setting-up time section, its output level size changes along with time variations, is also likely zero, negative is even negative infinite, preferential adopt negative infinite.
Each audio amplifier node corresponds to an audio amplifier entity in entity sound box system, and each audio amplifier entity comprises the one or more audio amplifiers being positioned at same position place.Namely each audio amplifier node can corresponding one or more audio amplifier being positioned at same position.Acoustic image path can be reappeared more exactly to make entity sound box system, the position distribution of each sound virtual audio amplifier node in audio amplifier distribution map should distribute corresponding with each audio amplifier provider location of entity sound box system, especially the relative position relation between each audio amplifier node is made, corresponding with the relative position relation between each audio amplifier entity.
The level of the actual output of audio amplifier entity is that the level of input signal superposes gained with the output level of audio amplifier node corresponding with this audio amplifier entity in above-mentioned acoustic image track data.The former is the characteristic of input signal, and the latter can be considered as the characteristic of audio amplifier entity self.At any one time, different input signals just has different incoming levels, and for same audio amplifier entity, only has an output level.Therefore can be understood as, the process of acoustic image track is the output level process to each audio amplifier entity, to form default acoustic image path effect (comprising acoustic image transfixion).
The incoming level of audio amplifier entity and output level superposition can before audio signal actual input audio amplifier entity advanced row relax, also can process again after entering audio amplifier entity, this depends on that the link of whole public address system is formed, and whether audio amplifier entity is built-in with audio-frequency signal processing module, as DSP unit etc.
The type of acoustic image track data comprises: fixed point audio-visual-data, change rail acoustic image track data and variable domain acoustic image track.When on control desk, simulation generates acoustic image track data, conveniently the speed of acoustic image and process are controlled, the line segment connected successively between some acoustic image TRAJECTORY CONTROL points of the embodiment of the present invention by distribution discrete in audio amplifier distribution map represents the path of running of acoustic image, namely the path of running of acoustic image is determined by several acoustic image TRAJECTORY CONTROL points of discrete distribution, and the overall running time of acoustic image.
Fixed point acoustic image, refers within the time period of preseting length, one or more audio amplifier node keeps ground output level selected in audio amplifier distribution map, and not selected audio amplifier node output level numerical value is zero or bears infinite situation.Correspondingly, fixed point audio-visual-data, refer within the time period of preseting length, one or more audio amplifier node keeps ground output level selected in audio amplifier distribution map, and not selected audio amplifier node not output level, output level numerical value be zero or negative infinite time, the time dependent output level data of each audio amplifier node.For selected audio amplifier node, in this setting-up time, its output level is continuous print (also may have change of fluctuating up and down); And for not selected audio amplifier node, in this setting-up time, its output level remains negative infinite.
Become rail acoustic image, refer within the time period of preseting length, in order to make acoustic image run along preset path, each audio amplifier node is according to the situation of certain rule output level.Correspondingly, become rail acoustic image track data, refer within the time period of preseting length, in order to make acoustic image run along preset path, the time dependent output level data of each audio amplifier node.The path of running of acoustic image does not need very accurate, and the time that acoustic image motion (running) continues can not be very long, only needs roughly to build the discernible acoustic image of audience and to run effect.
Variable domain acoustic image, refers within the time period of preseting length, in order to make acoustic image run along predeterminable area, and the situation that the output level of each audio amplifier node changes according to certain rule.Correspondingly, variable domain acoustic image track data refers to the time at preseting length, in order to make acoustic image run along predeterminable area, and the time dependent output level data of each audio amplifier node.
As shown in fig. 2, become rail acoustic image track data can obtain by the following method:
S201: arrange audio amplifier node: in audio amplifier distribution map 10, adds or deletes audio amplifier node 11, see Fig. 3.
S202: amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level, audio amplifier title etc.Audio amplifier node represents with audio amplifier icon in audio amplifier distribution map, can change its coordinate position by Mobile loudspeaker box icon.Audio amplifier type refers to full-range cabinet or ultralow frequency audio amplifier, and particular type can divide according to actual needs.Each audio amplifier node in audio amplifier distribution map is all assigned an output channel, and each output channel corresponds to an audio amplifier entity in entity sound box system, and each audio amplifier entity comprises the one or more audio amplifiers being positioned at same position place.Namely each audio amplifier node can corresponding one or more audio amplifier being positioned at same position.To run path to reappear in audio amplifier distribution map designed acoustic image, the position distribution of audio amplifier entity should be corresponding with the position distribution of audio amplifier node in audio amplifier distribution map.
S203: divide delta-shaped region: as shown in Figure 3, according to the distribution of audio amplifier node, audio amplifier distribution map is divided multiple delta-shaped region, three summits of each delta-shaped region are audio amplifier node; Each delta-shaped region is not overlapping, and does not comprise other audio amplifier nodes in each delta-shaped region, and each described audio amplifier node is corresponding with an output channel (or audio playing apparatus);
Further, can also determine delta-shaped region by arranging auxiliary sound box node to assist, described auxiliary sound box node does not have corresponding output channel, not output level;
S204: setting acoustic image TRAJECTORY CONTROL point and path of running: the time dependent path 12 of running of acoustic image is set in audio amplifier distribution map, and is positioned at this several acoustic image TRAJECTORY CONTROL points 11 of running on path.Can adopt and set acoustic image with the following method and to run path and acoustic image TRAJECTORY CONTROL point:
1, fixed point builds: (coordinate) position determining several acoustic image TRAJECTORY CONTROL points in audio amplifier distribution map successively, these several acoustic image TRAJECTORY CONTROL points are in turn connected to form acoustic image to run path, the moment that first acoustic image TRAJECTORY CONTROL point determined is corresponding is zero, and moment corresponding to follow-up acoustic image TRAJECTORY CONTROL point is for from determining that first acoustic image TRAJECTORY CONTROL point is to determining the time that current acoustic image TRAJECTORY CONTROL point experiences.Such as can click acoustic image TRAJECTORY CONTROL point by clicking sign (as mouse pointer) in audio amplifier distribution map, determine that an acoustic image TRAJECTORY CONTROL point-to-point hits determine that next acoustic image TRAJECTORY CONTROL point institute elapsed time determines the time span between two acoustic image tracing points from click, and finally calculate each moment corresponding to acoustic image tracing point;
2, drag and generate: in audio amplifier distribution map, drag mark (as mouse pointer) move along arbitrary line, curve or broken line thus determine that acoustic image is run path, in the process dragging mark, from initial position, all can generate an acoustic image TRAJECTORY CONTROL point on this runs path at interval of a period of time Ts.In the present embodiment, Ts is 108ms;
S205: editor's acoustic image TRAJECTORY CONTROL point attribute: the attribute of acoustic image TRAJECTORY CONTROL point comprise acoustic image TRAJECTORY CONTROL point coordinates position, the corresponding moment, to the time needed for next acoustic image TRAJECTORY CONTROL point.Can to run in total duration corresponding to path one or more modifies to the moment corresponding to selected acoustic image TRAJECTORY CONTROL point, time needed for this selected acoustic image TRAJECTORY CONTROL point to next acoustic image TRAJECTORY CONTROL point and acoustic image.
Suppose that the moment that acoustic image TRAJECTORY CONTROL point i is corresponding is ti, acoustic image from acoustic image TRAJECTORY CONTROL point i run to next tracing point i+1 former required time be ti ', acoustic image total duration corresponding to path of running is t.This means acoustic image from initial position run to the time that acoustic image TRAJECTORY CONTROL point i needs be ti, the acoustic image time of running through needed for whole path is t.
If modify to the moment corresponding to a certain acoustic image TRAJECTORY CONTROL point, then the whole acoustic image TRAJECTORY CONTROL point each self-corresponding moment before this acoustic image TRAJECTORY CONTROL point, and run total duration in path of acoustic image all needs to adjust.If the moment of the former correspondence of acoustic image TRAJECTORY CONTROL point i is ti, moment corresponding after amendment is Ti, the moment of the former correspondence of arbitrary acoustic image TRAJECTORY CONTROL point J before acoustic image TRAJECTORY CONTROL point i is tj, moment corresponding after adjustment is Tj, acoustic image former total duration corresponding to path of running is t, amended total duration is T, so Tj=tj/ti*(Ti-ti), T=t+(Ti-ti).The adjustment mode advantages of simple that the present invention adopts, and amount of calculation is very little.
Be understandable that, after time modification corresponding to arbitrary acoustic image TRAJECTORY CONTROL point, the time increased or reduce can distribute to whole acoustic image TRAJECTORY CONTROL points (i.e. aforementioned manner) before this acoustic image TRAJECTORY CONTROL point, the whole acoustic image TRAJECTORY CONTROL points also can run on path by each acoustic image of duration pro rate in identical duration ratio.After adopting during a kind of mode, suppose that the time that acoustic image TRAJECTORY CONTROL point i prepares to increase is ki, the moment that so acoustic image TRAJECTORY CONTROL point is corresponding will be modified to Ti=(ki*ti/t)+ti, namely time ki is not all respectively dispensing acoustic image TRAJECTORY CONTROL point, and each acoustic image TRAJECTORY CONTROL point all can in its ratio with the total duration in path of running to distribute portion of time.
If adjust the time needed for a certain acoustic image TRAJECTORY CONTROL point to next acoustic image TRAJECTORY CONTROL point, run total duration in path of so next moment corresponding to acoustic image TRAJECTORY CONTROL point, and acoustic image all needs to adjust.If the moment of the former correspondence of acoustic image TRAJECTORY CONTROL point i is ti, moment corresponding after amendment is Ti, acoustic image from current acoustic image TRAJECTORY CONTROL point i run be ti ' amendment to next tracing point i+1 former required time after the required time be Ti ', acoustic image former total duration corresponding to path of running is t, amended total duration is T, so Ti+1=Ti+Ti ', T=t+(Ti-ti)+(Ti '-ti ').
Total duration corresponding to path if amendment acoustic image is run, so this acoustic image is run moment corresponding to acoustic image TRAJECTORY CONTROL point of each on path and all adjusting to the time needed for next acoustic image TRAJECTORY CONTROL point.If the moment of the former correspondence of acoustic image TRAJECTORY CONTROL point i is ti, moment corresponding after adjustment is Ti, acoustic image from current acoustic image TRAJECTORY CONTROL point i run be ti ' adjustment to next tracing point i+1 former required time after the required time be Ti ', acoustic image former total duration corresponding to path of running is t, amended total duration is T, so Ti=ti/t* (T-t)+ti, Ti '=ti '/t*(T-t)+ti '.
S206: record becomes rail acoustic image track data: record each audio amplifier node and to run the output level numerical value in each moment in process in acoustic image path of running along setting.
For change rail acoustic image, calculate the output level value of the relevant audio amplifier node for generating acoustic image by following method.As shown in Figure 4, suppose acoustic image tracing point i(not necessarily acoustic image TRAJECTORY CONTROL point) be arranged in the delta-shaped region enclosed by three audio amplifier nodes, the moment that this acoustic image tracing point i is corresponding is ti, now three audio amplifier nodes of vertex position will export a certain size level, the output level value of other audio amplifier nodes in audio amplifier distribution map beyond these three audio amplifier nodes is zero or negative infinite, thus ensures that the acoustic image in ti moment in audio amplifier distribution map is positioned at above-mentioned acoustic image tracing point i place.Output level for the audio amplifier node A at arbitrary summit place of this delta-shaped region, this moment ti is dB
a1=10*lg(L
a'/L
a), wherein L
a' for this acoustic image tracing point is to the straight distance of all the other two summit institute structures of this delta-shaped region, L
afor this audio amplifier node A is to the straight distance of all the other two summit institute structures;
Further, each audio amplifier node can also arrange initialization level value.The initialization level supposing above-mentioned audio amplifier node A is dB
a, so at above-mentioned moment ti, the output level dB of audio amplifier node A1
a1'=dB
a+ 10*lg(L
a'/L
a).After all the other audio amplifier Node configuration initialization level, the output level of t by that analogy.
Further, as shown in Figure 2, any one delta-shaped region be made up of three audio amplifier nodes (movement locus end) is not fallen into if any part acoustic image tracing point (or acoustic image run path), auxiliary sound box node 13 then can be set to arrange new delta-shaped region, to ensure that whole acoustic image tracing point all falls into corresponding delta-shaped region, described auxiliary sound box node does not have corresponding output channel, not output level, only determines delta-shaped region for auxiliary;
Further, when recording the output level value of each audio amplifier node, can record continuously, also can carry out record according to certain frequency.For the latter, refer to the output level numerical value at interval of certain hour record once each audio amplifier node.In the present embodiment, adopt the frequency of 25 frames/second or 30 frames/second to be recorded in the output level value of each audio amplifier node when acoustic image is run along set path.By the output level data of each audio amplifier node of certain frequency record, can data volume be reduced, accelerate the processing speed when carrying out the process of acoustic image track to input audio signal, ensure that acoustic image is run the real-time of effect.
As shown in 5 figure, variable domain acoustic image track data can obtain by the following method:
S501: arrange audio amplifier node: in audio amplifier distribution map, adds or deletes audio amplifier node.
S502: amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level, audio amplifier title etc.Audio amplifier node represents with audio amplifier icon in audio amplifier distribution map, can change its coordinate position by Mobile loudspeaker box icon.Audio amplifier type refers to full-range cabinet or ultralow frequency audio amplifier, and particular type can divide according to actual needs.Each audio amplifier node in audio amplifier distribution map is all assigned an output channel, and each output channel corresponds to an audio amplifier entity in entity sound box system, and each audio amplifier entity comprises the one or more audio amplifiers being positioned at same position place.Namely each audio amplifier node can corresponding one or more audio amplifier being positioned at same position.To run path to reappear in audio amplifier distribution map designed acoustic image, the position distribution of audio amplifier entity should be corresponding with the position distribution of audio amplifier node in audio amplifier distribution map.
S503: setting acoustic image is run path divide acoustic image region: arrange multiple acoustic image region in audio amplifier distribution map, each acoustic image region comprises several audio amplifier nodes, and arranges the path of running in each acoustic image region of traversal.Be considered as one " acoustic image point " by acoustic image region, acoustic image is run to another region from a region, until run through whole acoustic image region successively.Can in audio amplifier distribution map arbitrary acoustic image region that each complementary overhangs is set, also can in the following manner, quick-setting acoustic image region:
Audio amplifier distribution map arranges straight line acoustic image to run path, and arrange several acoustic image regions along acoustic image path of running, the border in each acoustic image region is approximately perpendicular to the direction of running of described acoustic image.These acoustic image regions can be arranged side by side, and also can arrange at interval, but in order to ensure that raw acoustic image moves the continuity of (running), prioritizing selection is arranged side by side mode.The gross area in these acoustic image regions is less than or equal to the area of whole audio amplifier distribution map.When dividing acoustic image region, wide division can be adopted, also can adopt not wide division.
During concrete operations, by drag sign (as mouse pointer) arrange simultaneously acoustic image run path and divide acoustic image region.Specifically: drag sign and move to final position from a certain start position along certain direction in audio amplifier distribution map, simultaneously divide several acoustic image regions according to this start position to the air line distance equalization in this final position, the border in each acoustic image region is perpendicular to this this start position to the straight line in this final position, and the width in each acoustic image region is impartial.Acoustic image total duration of running moves to from original position the time that middle final position experiences for dragging sign.
Suppose that the air line distance of sign from start position to final position is R, total duration used is t, and the impartial quantity dividing acoustic image region is n, so will automatically generate n the acoustic image region that width is R/n, and each moment corresponding to acoustic image region is t/n.
S504: editor's acoustic image attribute zone time, comprises the moment corresponding to acoustic image region, to run total duration to next acoustic image region required time and acoustic image in current acoustic image region.The editor of acoustic image area attribute is similar with change rail acoustic image tracing point attributes edit.If modify to the moment corresponding to a certain acoustic image region, then the whole acoustic image regions each self-corresponding moment before this territory, sound area, and total duration that acoustic image is run all needs to adjust.If adjust the time needed for a certain acoustic image region to next acoustic image region, so next moment corresponding to acoustic image region, and acoustic image total duration of running all needs to adjust.If amendment acoustic image is run total duration, so this acoustic image is run moment corresponding to acoustic image region of each on path and all adjusting to the time needed for next acoustic image region.
S505: record variable domain acoustic image track data, records each audio amplifier node and runs at acoustic image successively in the process in each acoustic image region along setting path of running, the output level numerical value in each moment.
For variable domain acoustic image, calculate the output level value of the relevant audio amplifier node for generating acoustic image by following method.
As shown in Figure 6, suppose that the acoustic image of a certain variable domain track total duration of running is t, be divided into the acoustic image region of 4 equal width altogether, acoustic image runs path from certain acoustic image region 1(acoustic image region i along the acoustic image of straight line) to next acoustic image region 2(acoustic image region i+1) mobile, the acoustic image mid point that path is arranged in the line segment in acoustic image region 1 of running is acoustic image TRAJECTORY CONTROL point 1(acoustic image TRAJECTORY CONTROL point i), the acoustic image mid point that path is arranged in the line segment in acoustic image region 2 of running is acoustic image TRAJECTORY CONTROL point 2(acoustic image TRAJECTORY CONTROL point i+1).Run to the process in next acoustic image region 2 at acoustic image tracing point P from current acoustic image region 1, in acoustic image region 1, the output level of each audio amplifier node is 1dB(territory, territory dB
i), in acoustic image region 2, the output level of each audio amplifier node is 2dB(territory, territory dB
i+1), the audio amplifier node output level beyond these two acoustic image regions is zero or negative infinite.
Territory 1dB value=10log
eη ÷ 2.3025851
Territory 2dB value=10log
eβ ÷ 2.3025851
Wherein, l
12for acoustic image TRAJECTORY CONTROL point 1 is to the distance of acoustic image TRAJECTORY CONTROL point 2, l
1Pfor acoustic image TRAJECTORY CONTROL point 1 is to the distance of acoustic image tracing point P, l
p2for current acoustic image tracing point P is to the distance of acoustic image TRAJECTORY CONTROL point 2.Can find out that each acoustic image tracing point has two acoustic image region output levels from above-mentioned formula, but when acoustic image tracing point is positioned at each acoustic image TRAJECTORY CONTROL point, only has one of them acoustic image region output level, such as, when acoustic image tracing point P moves to acoustic image TRAJECTORY CONTROL point 2, now only have acoustic image region 2 output level, and the output level in acoustic image region 1 is zero.
When recording the output level value of variable domain acoustic image track each audio amplifier node, can record continuously, also can carry out record according to certain frequency.For the latter, refer to the output level numerical value at interval of certain hour record once each audio amplifier node.In the present embodiment, adopt the frequency of 25 frames/second or 30 frames/second to be recorded in the output level value of each audio amplifier node when acoustic image is run along set path.By the output level data of each audio amplifier node of certain frequency record, can data volume be reduced, accelerate the processing speed when carrying out the process of acoustic image track to input audio signal, ensure that acoustic image is run the real-time of effect.
As shown in 7 figure, fixed point acoustic image track data can obtain by the following method:
S701: arrange audio amplifier node: in audio amplifier distribution map, adds or deletes audio amplifier node.
S702: amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level, audio amplifier title etc.
S703: setting acoustic image tracing point and total duration, selected one or more audio amplifier node in audio amplifier distribution map, each audio amplifier node of selecting as acoustic image tracing point, and the time that acoustic image tracing point stops at each audio amplifier node is set.
S704: record fixed point acoustic image track data: the output level numerical value in each moment of recording each audio amplifier node in above-mentioned total duration.
In addition, acoustic image track data of the present invention also comprises audio amplifier link data.Audio amplifier link refers to and performs operation associated to audio amplifier node, and when associating the active audio amplifier node output level in audio amplifier node, the passive sound box node of association audio amplifier node is by automatic output level.Audio amplifier link data be to several selected audio amplifier nodes carry out operation associated after, passive sound box node is relative to the output level difference of active audio amplifier node.For being necessary to link the audio amplifier node associated, in spatial distribution, distance can be relatively.
As shown in Figure 8, audio amplifier link data obtains by following method:
S801: arrange audio amplifier node: in audio amplifier distribution map, adds or deletes audio amplifier node.
S802: amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level, audio amplifier title etc.
S803: audio amplifier node link relation is set: selected ultralow frequency audio amplifier node is connected to neighbouring multiple full-range cabinet nodes;
S804: record audio amplifier link data: calculate and record the output level DerivedTrim of described ultralow frequency audio amplifier, this output level DerivedTrim=10*log (Ratio)+DeriveddB, Ratio=∑ 10
(Trim-i+LinkTrim-i)/10wherein Trim-i is the output level value of arbitrary described full-range cabinet node i self, what LinkTrim-i was the former setting of full-range cabinet node i described in this and described ultralow frequency audio amplifier links level, DeriveddB is the initialization level value of described ultralow frequency audio amplifier node, and DerivedTrim is the output level value after described ultralow frequency audio amplifier node sets links to described some full-range cabinet nodes.A ultralow frequency audio amplifier node can be set to link to one or more full-range cabinet node, after link, when full-range cabinet node output level, the ultralow frequency audio amplifier node so linked with it will output level automatically, with the sound effect coordinating the construction of full-range cabinet node certain.For ultralow frequency audio amplifier node link to full-range cabinet node, only need consider both distance, source of sound character and required audio etc., can set ultralow frequency audio amplifier node automatically follow this full-range cabinet node play time output level, namely link level.
As shown in Figure 9, suppose that the ultralow frequency audio amplifier node 4 in audio amplifier distribution map links to 3 neighbouring full-range cabinet nodes, self output level value of full-range cabinet node 21,22,23 is respectively Trim1, Trim2 and Trim3, and ultralow frequency audio amplifier node 24 was respectively LinkTrim1, LinkTrim2 and LinkTrim3 with the level value that links of each full-range cabinet point 21,22,23 originally.If it is Ratio that level is totally added ratio, ultralow frequency audio amplifier node 4 initializes itself level value is DeriveddB, and last ultralow frequency audio amplifier node 4 output level value is DerivedTrim, then have:
Ratio＝10
(Trim1+LinkTrim1)/10+10
(Trim2+LinkTrim2)/10+10
(Trim3+LinkTrim3)/10
DerivedTrim＝10*log(Ratio)+DeriveddB
When Ratio is greater than 1, it is 0 that ultralow frequency audio amplifier node 24 is linked to gained output level after these three full-range cabinet nodes, and namely its final output level value is initialization level value.
Claims (10)
1. a panorama multiple channel acousto is as method for controlling trajectory, this control method is arranged by the output level value of control desk to each audio amplifier node of entity sound box system, acoustic image to be moved or static by the mode of setting in total duration of setting, and it is characterized in that, this control method comprises:
Generate acoustic image track data;
In the total duration corresponding to this acoustic image track data, according to acoustic image track data, adjust the output level of each audio amplifier entity;
In this total duration, the output level of the incoming level and corresponding audio amplifier entity that input to each audio amplifier physical signal is carried out superposing the level obtaining the actual output of each audio amplifier entity;
Described acoustic image track data comprises change rail acoustic image track data, variable domain acoustic image track data and audio amplifier link data, wherein:
Described change rail acoustic image track data obtains by the following method:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Divide delta-shaped region: according to the distribution of audio amplifier node, audio amplifier distribution map is divided multiple delta-shaped region, three summits of each delta-shaped region are audio amplifier node;
Setting acoustic image TRAJECTORY CONTROL point and path of running: the path of running that acoustic image is time dependent is set in audio amplifier distribution map, and is positioned at this several acoustic image TRAJECTORY CONTROL points of running on path;
Editor's acoustic image TRAJECTORY CONTROL point attribute: the attribute of acoustic image TRAJECTORY CONTROL point comprise acoustic image TRAJECTORY CONTROL point coordinates position, the corresponding moment, to the time needed for next acoustic image TRAJECTORY CONTROL point;
Record becomes rail acoustic image track data: record each audio amplifier node and to run the output level numerical value in each moment in process in acoustic image path of running along setting;
Described variable domain acoustic image track data obtains by the following method:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Setting acoustic image is run path divide acoustic image region: in audio amplifier distribution map, arrange multiple acoustic image region, each acoustic image region comprises several audio amplifier nodes, and arranges the path of running in each acoustic image region of traversal;
Editor's acoustic image attribute zone time, comprises the moment corresponding to acoustic image region, to run total duration to next acoustic image region required time and acoustic image in current acoustic image region;
Record variable domain acoustic image track data, records each audio amplifier node and runs at acoustic image successively in the process in each acoustic image region along setting path of running, the output level numerical value in each moment;
Described audio amplifier link data obtains as follows:
Audio amplifier node is set: in audio amplifier distribution map, adds or delete audio amplifier node;
Amendment audio amplifier nodal community: the attribute of audio amplifier node comprises audio amplifier coordinate, audio amplifier type, corresponding output channel, initialization level;
Audio amplifier node link relation is set: selected ultralow frequency audio amplifier node is connected to neighbouring multiple full-range cabinet nodes;
Record audio amplifier link data: calculate and record the output level DerivedTrim of described ultralow frequency audio amplifier, this output level DerivedTrim=10*log (Ratio)+DeriveddB, Ratio=∑ 10 (Trim-i+LinkTrim-i)/10, wherein to be the output level value of arbitrary described full-range cabinet node i self be Trim-i, what LinkTrim-i was the former setting of full-range cabinet node i described in this and ultralow frequency audio amplifier links level, DeriveddB is the initialization level value of described ultralow frequency audio amplifier node, DerivedTrim is the output level value after described ultralow frequency audio amplifier node sets links to described some full-range cabinet nodes.
2. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that, when generating described change rail acoustic image track data, each described audio amplifier node at acoustic image along the setting path output level value calculating method in each moment in process of running of running is: establish acoustic image tracing point i to be arranged in the delta-shaped region enclosed by three audio amplifier nodes, the moment that this acoustic image tracing point i is corresponding is ti, output level for the audio amplifier node A at arbitrary summit place of this delta-shaped region, this moment ti is dB
a1=10*lg(L
a'/L
a), wherein L
a' for this acoustic image tracing point is to the straight distance of all the other two summit institute structures of this delta-shaped region, L
afor this audio amplifier node A is to the straight distance of all the other two summit institute structures, the output level value of other audio amplifier nodes in audio amplifier distribution map is zero or negative infinite.
3. panorama multiple channel acousto according to claim 2 is as method for controlling trajectory, it is characterized in that: when generating described change rail acoustic image track data, each described audio amplifier node is provided with initialization level value, if the initialization level of described audio amplifier node A is dB
a, at moment ti, the output level dB of described audio amplifier node A1
a1'=dB
a+ 10*lg(L
a'/L
a), after all the other audio amplifier Node configuration initialization level, the output level of t is by that analogy.
4. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that, when generating described change rail acoustic image track data, adopt and set acoustic image TRAJECTORY CONTROL point and path of running with the following method: the position determining several acoustic image TRAJECTORY CONTROL points in described audio amplifier distribution map successively, these several acoustic image TRAJECTORY CONTROL points are in turn connected to form acoustic image to run path, the moment that first acoustic image TRAJECTORY CONTROL point determined is corresponding is zero, moment corresponding to follow-up acoustic image TRAJECTORY CONTROL point is for from determining that first acoustic image TRAJECTORY CONTROL point is to determining the time that current acoustic image TRAJECTORY CONTROL point experiences.
5. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that, when generating described change rail acoustic image track data, adopt and set acoustic image TRAJECTORY CONTROL point and path of running with the following method: in audio amplifier distribution map, drag mark move along arbitrary line, curve or broken line thus determine that acoustic image is run path, in the process dragging mark, from initial position, all can generate an acoustic image TRAJECTORY CONTROL point on this runs path at interval of a period of time.
6. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that: when generating described change rail acoustic image track data, when editing corresponding to acoustic image TRAJECTORY CONTROL point, if the moment of the former correspondence of acoustic image TRAJECTORY CONTROL point i is ti, moment corresponding after amendment is Ti, the moment of the former correspondence of arbitrary acoustic image TRAJECTORY CONTROL point J before acoustic image TRAJECTORY CONTROL point i is tj, moment corresponding after adjustment is Tj, acoustic image former total duration corresponding to path of running is t, amended total duration is T, so Tj=tj/ti*(Ti-ti), T=t+(Ti-ti).
7. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that: when generating described change rail acoustic image track data, if there is part acoustic image tracing point not fall into any one delta-shaped region be made up of three audio amplifier nodes, the auxiliary sound box node audio amplifier node adjacent with this part acoustic image tracing point is set to arrange new delta-shaped region, run whole acoustic image tracing points in path of described acoustic image are made to fall into corresponding delta-shaped region, described auxiliary sound box node without the output channel of correspondence, not output level.
8. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that: when generating described variable domain acoustic image track data, each described audio amplifier node at acoustic image along setting path of the running output level numerical computation method in each moment in the process in each acoustic image region of running successively is: set the acoustic image of a certain variable domain track to run total duration as t, be divided into the acoustic image region of n equal width altogether, acoustic image moves to next acoustic image region i+1 along the acoustic image of straight line path of running from certain acoustic image region i, the acoustic image mid point that path is arranged in the line segment in acoustic image region 1 of running is acoustic image TRAJECTORY CONTROL point i, the acoustic image mid point that path is arranged in the line segment of acoustic image region i+1 of running is acoustic image TRAJECTORY CONTROL point i+1, current time acoustic image tracing point P runs to the process of next acoustic image region i+1 from current acoustic image region i, in the i of acoustic image region, the output level of each audio amplifier node is territory dB
i, in the i+1 of acoustic image region, the output level of each audio amplifier node is territory dB
i+1, the audio amplifier node output level beyond these two acoustic image regions is zero or negative infinite, and:
Territory 1dB value=10log
eη ÷ 2.3025851
Territory 2dB value=10log
eβ ÷ 2.3025851
Wherein, l
12for the distance of current time acoustic image TRAJECTORY CONTROL point P to acoustic image TRAJECTORY CONTROL point i, l
1Pfor the distance of acoustic image TRAJECTORY CONTROL point i to acoustic image tracing point P, l
p2for acoustic image tracing point P is to the distance of acoustic image TRAJECTORY CONTROL point i+1.
9. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that: when generating described variable domain acoustic image track data, when recording the output level value of variable domain acoustic image track each audio amplifier node, can record continuously, or carry out record according to certain frequency.
10. panorama multiple channel acousto according to claim 1 is as method for controlling trajectory, it is characterized in that: when generating described variable domain acoustic image track data, setting acoustic image is run path and divide the mode in acoustic image region and be: drag sign and move to final position from a certain start position along certain direction in audio amplifier distribution map, simultaneously divide several acoustic image regions according to this start position to the air line distance equalization in this final position, the border in each acoustic image region perpendicular to this this start position to the straight line in this final position, and the width in each acoustic image region is impartial, acoustic image total duration of running moves to from original position the time that middle final position experiences for dragging sign.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754538.7A CN104754445B (en) | 2013-12-31 | 2013-12-31 | Panorama multiple channel acousto is as method for controlling trajectory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754538.7A CN104754445B (en) | 2013-12-31 | 2013-12-31 | Panorama multiple channel acousto is as method for controlling trajectory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104754445A true CN104754445A (en) | 2015-07-01 |
| CN104754445B CN104754445B (en) | 2018-01-19 |
Family
ID=53593438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310754538.7A Active CN104754445B (en) | 2013-12-31 | 2013-12-31 | Panorama multiple channel acousto is as method for controlling trajectory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104754445B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937205A (en) * | 2015-12-31 | 2017-07-07 | 上海励丰创意展示有限公司 | Towards video display, the complicated sound effect method for controlling trajectory of stage |
| CN106937204A (en) * | 2015-12-31 | 2017-07-07 | 上海励丰创意展示有限公司 | Panorama multichannel sound effect method for controlling trajectory |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5335011A (en) * | 1993-01-12 | 1994-08-02 | Bell Communications Research, Inc. | Sound localization system for teleconferencing using self-steering microphone arrays |
| CN1277532A (en) * | 1999-06-10 | 2000-12-20 | 三星电子株式会社 | Multiple-channel audio frequency replaying apparatus and method |
| CN1529419A (en) * | 1997-04-11 | 2004-09-15 | ���µ�����ҵ��ʽ���� | Sound-image localization device and method for audio-visual equipment |
| CN1860826A (en) * | 2004-06-04 | 2006-11-08 | 三星电子株式会社 | Apparatus and method of reproducing wide stereo sound |
| WO2008047833A1 (en) * | 2006-10-19 | 2008-04-24 | Panasonic Corporation | Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
-
2013
- 2013-12-31 CN CN201310754538.7A patent/CN104754445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5335011A (en) * | 1993-01-12 | 1994-08-02 | Bell Communications Research, Inc. | Sound localization system for teleconferencing using self-steering microphone arrays |
| CN1529419A (en) * | 1997-04-11 | 2004-09-15 | ���µ�����ҵ��ʽ���� | Sound-image localization device and method for audio-visual equipment |
| CN1277532A (en) * | 1999-06-10 | 2000-12-20 | 三星电子株式会社 | Multiple-channel audio frequency replaying apparatus and method |
| CN1860826A (en) * | 2004-06-04 | 2006-11-08 | 三星电子株式会社 | Apparatus and method of reproducing wide stereo sound |
| WO2008047833A1 (en) * | 2006-10-19 | 2008-04-24 | Panasonic Corporation | Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937205A (en) * | 2015-12-31 | 2017-07-07 | 上海励丰创意展示有限公司 | Towards video display, the complicated sound effect method for controlling trajectory of stage |
| CN106937204A (en) * | 2015-12-31 | 2017-07-07 | 上海励丰创意展示有限公司 | Panorama multichannel sound effect method for controlling trajectory |
| CN106937204B (en) * | 2015-12-31 | 2019-07-02 | 上海励丰创意展示有限公司 | Panorama multichannel sound effect method for controlling trajectory |
| CN106937205B (en) * | 2015-12-31 | 2019-07-02 | 上海励丰创意展示有限公司 | Complicated sound effect method for controlling trajectory towards video display, stage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104754445B (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104754178A (en) | Voice frequency control method | |
| Monteil et al. | Linear and weakly nonlinear stability analyses of cooperative car-following models | |
| US9420394B2 (en) | Panning presets | |
| CN115866738B (en) | Method, computing device and storage medium for controlling a speaker mesh network | |
| US10242712B2 (en) | Video synchronization based on audio | |
| CN104754186A (en) | Device control method | |
| CN104750059A (en) | Light control method | |
| CN104754445A (en) | Panoramic multichannel acoustic image trajectory control method | |
| CN112967705A (en) | Mixed sound song generation method, device, equipment and storage medium | |
| JP2019508722A (en) | Audio data processing method and terminal | |
| CN104754442A (en) | Panoramic multichannel acoustic image control method | |
| CN104754244A (en) | Full-scene multi-channel audio control method based on variable domain acoustic image performing effect | |
| CN104754243A (en) | Panoramic multichannel audio frequency control method based on variable domain acoustic image control | |
| CN104754242A (en) | Variable rail sound image processing-based panoramic multi-channel audio control method | |
| CN104754449A (en) | Audio effect control method based on variable domain acoustic images | |
| CN104754458A (en) | Control method of link audio effect | |
| CN104754448A (en) | Orbital transfer acoustic image trajectory control method | |
| CN104754457A (en) | Acoustic image track control method | |
| CN104754444A (en) | Variable range acoustic image trajectory control method | |
| CN104754447A (en) | Variable rail sound image-based link sound effect control method | |
| CN104754450A (en) | Variable rail sound image-based sound effect control method | |
| CN104754443A (en) | Variable domain sound image-based link sound effect control method | |
| CN104754451A (en) | Fixed point sound image track control method | |
| CN106937021A (en) | Performance integrated control method based on many rail playback technologies of time shaft | |
| CN104751869A (en) | Variable rail sound image-based panoramic multi-channel audio control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |