CN1154606A - 音频译码装置 - Google Patents
音频译码装置 Download PDFInfo
- Publication number
- CN1154606A CN1154606A CN96122821A CN96122821A CN1154606A CN 1154606 A CN1154606 A CN 1154606A CN 96122821 A CN96122821 A CN 96122821A CN 96122821 A CN96122821 A CN 96122821A CN 1154606 A CN1154606 A CN 1154606A
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- CN
- China
- Prior art keywords
- mentioned
- frequency
- voice data
- data
- frequency field
- 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.)
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Classifications
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- 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
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
Abstract
Description
存储容量 | 与先有例比 | |
图10(先有例) | 6400字 | 100% |
第2实施例 | 4608字 | 72% |
第3实施例 | 3968字 | 62% |
第4实施例 | 2432字 | 38% |
第5实施例 | 2048字 | 32% |
Claims (18)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP276293/95 | 1995-09-29 | ||
JP276293/1995 | 1995-09-29 | ||
JP27629395 | 1995-09-29 | ||
JP2210796 | 1996-01-12 | ||
JP022107/96 | 1996-01-12 | ||
JP022107/1996 | 1996-01-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003101013284A Division CN1288849C (zh) | 1995-09-29 | 1996-09-28 | 音频译码装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1154606A true CN1154606A (zh) | 1997-07-16 |
CN1130691C CN1130691C (zh) | 2003-12-10 |
Family
ID=26359282
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96122821A Expired - Lifetime CN1130691C (zh) | 1995-09-29 | 1996-09-28 | 音频译码装置 |
CNB2003101013284A Expired - Lifetime CN1288849C (zh) | 1995-09-29 | 1996-09-28 | 音频译码装置 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003101013284A Expired - Lifetime CN1288849C (zh) | 1995-09-29 | 1996-09-28 | 音频译码装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US5867819A (zh) |
CN (2) | CN1130691C (zh) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3255034B2 (ja) * | 1996-08-09 | 2002-02-12 | 日本電気株式会社 | 音声信号処理回路 |
KR100206333B1 (ko) * | 1996-10-08 | 1999-07-01 | 윤종용 | 두개의 스피커를 이용한 멀티채널 오디오 재생장치및 방법 |
SG54379A1 (en) * | 1996-10-24 | 1998-11-16 | Sgs Thomson Microelectronics A | Audio decoder with an adaptive frequency domain downmixer |
TW429700B (en) * | 1997-02-26 | 2001-04-11 | Sony Corp | Information encoding method and apparatus, information decoding method and apparatus and information recording medium |
US5946352A (en) * | 1997-05-02 | 1999-08-31 | Texas Instruments Incorporated | Method and apparatus for downmixing decoded data streams in the frequency domain prior to conversion to the time domain |
US6931291B1 (en) * | 1997-05-08 | 2005-08-16 | Stmicroelectronics Asia Pacific Pte Ltd. | Method and apparatus for frequency-domain downmixing with block-switch forcing for audio decoding functions |
CN1293538C (zh) * | 1997-11-21 | 2007-01-03 | 日本胜利株式会社 | 音频信号的编码装置、唱盘以及盘重放装置 |
SE9903553D0 (sv) | 1999-01-27 | 1999-10-01 | Lars Liljeryd | Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL) |
JP3805929B2 (ja) * | 1999-07-05 | 2006-08-09 | パイオニア株式会社 | 情報記録装置及び情報記録方法 |
SE0001926D0 (sv) | 2000-05-23 | 2000-05-23 | Lars Liljeryd | Improved spectral translation/folding in the subband domain |
US6725110B2 (en) * | 2000-05-26 | 2004-04-20 | Yamaha Corporation | Digital audio decoder |
DE60204038T2 (de) * | 2001-11-02 | 2006-01-19 | Matsushita Electric Industrial Co., Ltd., Kadoma | Vorrichtung zum codieren bzw. decodieren eines audiosignals |
US6950794B1 (en) | 2001-11-20 | 2005-09-27 | Cirrus Logic, Inc. | Feedforward prediction of scalefactors based on allowable distortion for noise shaping in psychoacoustic-based compression |
US7065491B2 (en) * | 2002-02-15 | 2006-06-20 | National Central University | Inverse-modified discrete cosine transform and overlap-add method and hardware structure for MPEG layer3 audio signal decoding |
JP4187719B2 (ja) * | 2002-05-03 | 2008-11-26 | ハーマン インターナショナル インダストリーズ インコーポレイテッド | マルチチャネル・ダウンミキシング装置 |
US20030220801A1 (en) * | 2002-05-22 | 2003-11-27 | Spurrier Thomas E. | Audio compression method and apparatus |
KR100524065B1 (ko) * | 2002-12-23 | 2005-10-26 | 삼성전자주식회사 | 시간-주파수 상관성을 이용한 개선된 오디오 부호화및/또는 복호화 방법과 그 장치 |
US7460684B2 (en) | 2003-06-13 | 2008-12-02 | Nielsen Media Research, Inc. | Method and apparatus for embedding watermarks |
US20050096918A1 (en) * | 2003-10-31 | 2005-05-05 | Arun Rao | Reduction of memory requirements by overlaying buffers |
JP4155575B2 (ja) * | 2004-03-31 | 2008-09-24 | 株式会社東芝 | 音声再生装置及び集積回路装置 |
US8412363B2 (en) * | 2004-07-02 | 2013-04-02 | The Nielson Company (Us), Llc | Methods and apparatus for mixing compressed digital bit streams |
EP2958106B1 (en) | 2006-10-11 | 2018-07-18 | The Nielsen Company (US), LLC | Methods and apparatus for embedding codes in compressed audio data streams |
US8036903B2 (en) * | 2006-10-18 | 2011-10-11 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system |
CN101398825B (zh) * | 2007-09-29 | 2013-07-03 | 三星电子株式会社 | 用于快速音乐分类和检索的方法和设备 |
ES2671711T3 (es) * | 2008-09-18 | 2018-06-08 | Electronics And Telecommunications Research Institute | Aparato de codificación y aparato de decodificación para transformar entre codificador basado en transformada de coseno discreta modificada y hetero codificador |
KR20110110093A (ko) * | 2008-10-01 | 2011-10-06 | 톰슨 라이센싱 | 디코딩 장치, 디코딩 방법, 인코딩 장치, 인코딩 방법, 및 편집 장치 |
JP5163545B2 (ja) * | 2009-03-05 | 2013-03-13 | 富士通株式会社 | オーディオ復号装置及びオーディオ復号方法 |
JP5365363B2 (ja) * | 2009-06-23 | 2013-12-11 | ソニー株式会社 | 音響信号処理システム、音響信号復号装置、これらにおける処理方法およびプログラム |
TWI557723B (zh) | 2010-02-18 | 2016-11-11 | 杜比實驗室特許公司 | 解碼方法及系統 |
KR101756838B1 (ko) * | 2010-10-13 | 2017-07-11 | 삼성전자주식회사 | 다채널 오디오 신호를 다운 믹스하는 방법 및 장치 |
EP3122072B1 (en) * | 2011-03-24 | 2020-09-23 | Oticon A/s | Audio processing device, system, use and method |
JP6807033B2 (ja) | 2015-11-09 | 2021-01-06 | ソニー株式会社 | デコード装置、デコード方法、およびプログラム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4092603A (en) * | 1976-09-16 | 1978-05-30 | Hughes Aircraft Company | System for obtaining pulse compression in the frequency domain |
US4369336A (en) * | 1979-11-26 | 1983-01-18 | Eventide Clockworks, Inc. | Method and apparatus for producing two complementary pitch signals without glitch |
US4291310A (en) * | 1979-12-31 | 1981-09-22 | International Telephone And Telegraph Corporation | Adaptive two-dimensional null forming receiving antenna system |
DE3109006A1 (de) * | 1981-03-10 | 1982-09-23 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren und schaltungsanordnung zum aufzeichnen und/oder wiedergeben von breitbandigen signalen |
US5347305A (en) * | 1990-02-21 | 1994-09-13 | Alkanox Corporation | Video telephone system |
US5164980A (en) * | 1990-02-21 | 1992-11-17 | Alkanox Corporation | Video telephone system |
JP3093494B2 (ja) * | 1992-11-18 | 2000-10-03 | 株式会社東芝 | 多様性信号処理装置 |
US5561608A (en) * | 1992-11-18 | 1996-10-01 | Kabushiki Kaisha Toshiba | Multisystem adaptable type signal processing and recording/reproducing apparatus |
-
1996
- 1996-09-27 US US08/722,948 patent/US5867819A/en not_active Expired - Lifetime
- 1996-09-28 CN CN96122821A patent/CN1130691C/zh not_active Expired - Lifetime
- 1996-09-28 CN CNB2003101013284A patent/CN1288849C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1496007A (zh) | 2004-05-12 |
US5867819A (en) | 1999-02-02 |
CN1130691C (zh) | 2003-12-10 |
CN1288849C (zh) | 2006-12-06 |
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Assignee: GUANGZHOU PANYU JUDA CAR AUDIO EQUIPMENT Co.,Ltd. Assignor: DOLBY LABORATORIES LICENSING Corp. Contract record no.: 2011990000899 Denomination of invention: Audio decoding device and signal processing device Granted publication date: 20031210 License type: Common License Open date: 19970716 Record date: 20110915 |
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Assignee: Cav Audio(guangzhou) Co.,Ltd. Assignor: DOLBY LABORATORIES LICENSING Corp. Contract record no.: 2011990001055 Denomination of invention: Audio decoding device and signal processing device Granted publication date: 20031210 License type: Common License Open date: 19970716 Record date: 20111123 Assignee: Fujian Shenzhou Electronic Co.,Ltd. Assignor: DOLBY LABORATORIES LICENSING Corp. Contract record no.: 2011990001056 Denomination of invention: Audio decoding device and signal processing device Granted publication date: 20031210 License type: Common License Open date: 19970716 Record date: 20111123 |
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