CN1303583C - 多通道音频编码器 - Google Patents
多通道音频编码器 Download PDFInfo
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- CN1303583C CN1303583C CNB031569277A CN03156927A CN1303583C CN 1303583 C CN1303583 C CN 1303583C CN B031569277 A CNB031569277 A CN B031569277A CN 03156927 A CN03156927 A CN 03156927A CN 1303583 C CN1303583 C CN 1303583C
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Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
- G10L19/0208—Subband vocoders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereo-Broadcasting Methods (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Stereophonic System (AREA)
- Color Television Systems (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Description
Trate | Fsamp(kHz) | ||||
8-12 | 16-24 | 32-48 | 64-96 | 128-192 | |
≤512kbps≤1024kbps≤2048kbps≤4096kbps | 1024★★★ | 20481024★★ | 409620481024★ | ★★20481024 | ★★★2048 |
Trate | Fsamp(kHz) | ||||
8-12 | 16-24 | 32-48 | 64-96 | 128-192 | |
<512kbps<1024kbps<2048kbps<4096kbps | 8-5.3k★★★ | 8-5.3k8-5.3k★★ | 8-5.3k8-5.3k8-5.3k★ | ★★8-5.3k8-5.3k | ★★★8-5.3k |
ABIT变址 | 量化层的数目 | 编码长度(位) | SNoR(dB) |
0123456789101112131415161718192021222324252627 | 0357(或8)91317(或16)2533(或32)65(或64)129(或128)2565121024204840968192163843276865536131072262144524268104857620971524194304838860816777216 | 0可变的可变的可变的(或3)可变的可变的可变的(或4)可变的可变的(或5)可变的(或6)可变的(或7)89101112131415161718192021222324 | -8121619212427303642485460667278849096102108114120126132138144 |
Claims (5)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US789695P | 1995-12-01 | 1995-12-01 | |
US60/007,896 | 1995-12-01 | ||
US08/642,254 | 1996-05-02 | ||
US08/642,254 US5956674A (en) | 1995-12-01 | 1996-05-02 | Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96199832A Division CN1132151C (zh) | 1995-12-01 | 1996-11-21 | 多通道声解码器 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2006100817855A Division CN1848241B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN200610081786XA Division CN1848242B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1495705A CN1495705A (zh) | 2004-05-12 |
CN1303583C true CN1303583C (zh) | 2007-03-07 |
Family
ID=26677495
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB031569277A Expired - Lifetime CN1303583C (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN2010101265919A Expired - Lifetime CN101872618B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN2006100817855A Expired - Lifetime CN1848241B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN96199832A Expired - Lifetime CN1132151C (zh) | 1995-12-01 | 1996-11-21 | 多通道声解码器 |
CN200610081786XA Expired - Lifetime CN1848242B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010101265919A Expired - Lifetime CN101872618B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN2006100817855A Expired - Lifetime CN1848241B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
CN96199832A Expired - Lifetime CN1132151C (zh) | 1995-12-01 | 1996-11-21 | 多通道声解码器 |
CN200610081786XA Expired - Lifetime CN1848242B (zh) | 1995-12-01 | 1996-11-21 | 多通道音频编码器 |
Country Status (18)
Country | Link |
---|---|
US (4) | US5956674A (zh) |
EP (1) | EP0864146B1 (zh) |
JP (1) | JP4174072B2 (zh) |
KR (1) | KR100277819B1 (zh) |
CN (5) | CN1303583C (zh) |
AT (1) | ATE279770T1 (zh) |
AU (1) | AU705194B2 (zh) |
BR (1) | BR9611852A (zh) |
CA (2) | CA2238026C (zh) |
DE (1) | DE69633633T2 (zh) |
DK (1) | DK0864146T3 (zh) |
EA (1) | EA001087B1 (zh) |
ES (1) | ES2232842T3 (zh) |
HK (4) | HK1015510A1 (zh) |
MX (1) | MX9804320A (zh) |
PL (3) | PL183092B1 (zh) |
PT (1) | PT864146E (zh) |
WO (1) | WO1997021211A1 (zh) |
Families Citing this family (545)
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