WO1995024309A3 - Non invasive error sensing DVE method and apparatus - Google Patents

Non invasive error sensing DVE method and apparatus Download PDF

Info

Publication number
WO1995024309A3
WO1995024309A3 PCT/US1995/002433 US9502433W WO9524309A3 WO 1995024309 A3 WO1995024309 A3 WO 1995024309A3 US 9502433 W US9502433 W US 9502433W WO 9524309 A3 WO9524309 A3 WO 9524309A3
Authority
WO
WIPO (PCT)
Prior art keywords
noise
non invasive
error sensing
dve
dve method
Prior art date
Application number
PCT/US1995/002433
Other languages
French (fr)
Other versions
WO1995024309A2 (en
Inventor
Dexter G Smith
Original Assignee
Noise Cancellation Tech
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Noise Cancellation Tech filed Critical Noise Cancellation Tech
Publication of WO1995024309A2 publication Critical patent/WO1995024309A2/en
Publication of WO1995024309A3 publication Critical patent/WO1995024309A3/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/109—Compressors, e.g. fans
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/112—Ducts
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3011—Single acoustic input
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3012—Algorithms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3044—Phase shift, e.g. complex envelope processing

Abstract

A method of cancelling pressure phenomena using only a single sensor (10) to sense the noise by: a) producing an attenuating noise; and b) measuring the tonal result of said original and said attenuated noise without sensing noise generated by local turbulence; via DVE (32), loudspeaker (33), and microphone (34).
PCT/US1995/002433 1994-03-02 1995-03-01 Non invasive error sensing dve method and apparatus WO1995024309A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20460494A 1994-03-02 1994-03-02
US08/204,604 1994-03-02

Publications (2)

Publication Number Publication Date
WO1995024309A2 WO1995024309A2 (en) 1995-09-14
WO1995024309A3 true WO1995024309A3 (en) 1995-10-05

Family

ID=22758620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/002433 WO1995024309A2 (en) 1994-03-02 1995-03-01 Non invasive error sensing dve method and apparatus

Country Status (1)

Country Link
WO (1) WO1995024309A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010036280A1 (en) * 2000-06-05 2001-11-01 Astorino John F. Active noise cancellation system recalibration

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122303A (en) * 1976-12-10 1978-10-24 Sound Attenuators Limited Improvements in and relating to active sound attenuation
US4153815A (en) * 1976-05-13 1979-05-08 Sound Attenuators Limited Active attenuation of recurring sounds
US4417098A (en) * 1979-08-16 1983-11-22 Sound Attenuators Limited Method of reducing the adaption time in the cancellation of repetitive vibration
US4829590A (en) * 1986-01-13 1989-05-09 Technology Research International, Inc. Adaptive noise abatement system
US4878188A (en) * 1988-08-30 1989-10-31 Noise Cancellation Tech Selective active cancellation system for repetitive phenomena
US5105377A (en) * 1990-02-09 1992-04-14 Noise Cancellation Technologies, Inc. Digital virtual earth active cancellation system
US5293425A (en) * 1991-12-03 1994-03-08 Massachusetts Institute Of Technology Active noise reducing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153815A (en) * 1976-05-13 1979-05-08 Sound Attenuators Limited Active attenuation of recurring sounds
US4122303A (en) * 1976-12-10 1978-10-24 Sound Attenuators Limited Improvements in and relating to active sound attenuation
US4417098A (en) * 1979-08-16 1983-11-22 Sound Attenuators Limited Method of reducing the adaption time in the cancellation of repetitive vibration
US4829590A (en) * 1986-01-13 1989-05-09 Technology Research International, Inc. Adaptive noise abatement system
US4878188A (en) * 1988-08-30 1989-10-31 Noise Cancellation Tech Selective active cancellation system for repetitive phenomena
US5105377A (en) * 1990-02-09 1992-04-14 Noise Cancellation Technologies, Inc. Digital virtual earth active cancellation system
US5293425A (en) * 1991-12-03 1994-03-08 Massachusetts Institute Of Technology Active noise reducing

Also Published As

Publication number Publication date
WO1995024309A2 (en) 1995-09-14

Similar Documents

Publication Publication Date Title
TW351039B (en) Method and apparatus for performing variable block size adaptation for noise robust acoustic echo cancellation
CA2041477A1 (en) Active acoustic attenuation system with overall modeling
CA2260893A1 (en) Method of reducing voice signal interference
WO2002052542A3 (en) Method and arrangement for processing a noise signal from a noise source
EP0772374A3 (en) Method and apparatus for controlling the performance of a loudspeaker in a room
CA2021676A1 (en) Communication system with active noise cancellation
EP0679044A3 (en) Noise-canceling differential microphone assembly.
CA2211994A1 (en) Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones
ATE308201T1 (en) ACOUSTIC ECH CANCELLATION DEVICE
CA2196553A1 (en) Analysis of Audio Quality
CA2082890A1 (en) Multi-channel active attenuation system with error signal inputs
MY132510A (en) Multistage turbulence shield for microphones
CA2204880A1 (en) Noise cancellation apparatus
SE9500858D0 (en) Arrangement and method relating to speech transmission and a telecommunications system comprising such arrangement
CA2175617A1 (en) Filter for Speech Modification or Enhancement, and Various Apparatus, Systems and Method Using Same
MX9504930A (en) Apparatus and method for the active control of air moving device noise.
WO1997025790A3 (en) Noise cancellation and noise reduction apparatus
ATE165505T1 (en) DEVICE FOR SUPPRESSING SNORING
EP0683621A3 (en) Transmitter-receiver having ear-piece type acoustic transducing part.
CA2414972A1 (en) Gain control method for acoustic echo cancellation and suppression
CA2148962A1 (en) Coherence Optimized Active Adaptive Control System
GB2398209A (en) Motion sensor for noise cancellation in borehole electromagnetic telemetry system
DE69125601D1 (en) NOISE REDUCING SYSTEM
FI980649A0 (en) Foerfarande och anordning Foer att behandla riktad ljud i en acoustik virtualmiljoe
AU5938496A (en) Apparatus and method for increasing the intelligibility of a loudspeaker output and for echo cancellation in telephones

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): CA JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase