CA2267764A1 - Variable length audio coding using a plurality of subband bit allocation patterns - Google Patents
Variable length audio coding using a plurality of subband bit allocation patterns Download PDFInfo
- Publication number
- CA2267764A1 CA2267764A1 CA002267764A CA2267764A CA2267764A1 CA 2267764 A1 CA2267764 A1 CA 2267764A1 CA 002267764 A CA002267764 A CA 002267764A CA 2267764 A CA2267764 A CA 2267764A CA 2267764 A1 CA2267764 A1 CA 2267764A1
- Authority
- CA
- Canada
- Prior art keywords
- region
- transform coefficients
- quantized
- bits
- encoding
- 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.)
- Abandoned
Links
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/726,959 US5924064A (en) | 1996-10-07 | 1996-10-07 | Variable length coding using a plurality of region bit allocation patterns |
| US08/726,959 | 1996-10-07 | ||
| PCT/US1997/017770 WO1998015945A1 (en) | 1996-10-07 | 1997-10-06 | Variable length audio coding using a plurality of subband bit allocation patterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2267764A1 true CA2267764A1 (en) | 1998-04-16 |
Family
ID=24920743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002267764A Abandoned CA2267764A1 (en) | 1996-10-07 | 1997-10-06 | Variable length audio coding using a plurality of subband bit allocation patterns |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5924064A (enExample) |
| EP (1) | EP0968497B1 (enExample) |
| JP (1) | JP4237826B2 (enExample) |
| CA (1) | CA2267764A1 (enExample) |
| DE (1) | DE69705642T2 (enExample) |
| WO (1) | WO1998015945A1 (enExample) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167375A (en) * | 1997-03-17 | 2000-12-26 | Kabushiki Kaisha Toshiba | Method for encoding and decoding a speech signal including background noise |
| KR100335609B1 (ko) | 1997-11-20 | 2002-10-04 | 삼성전자 주식회사 | 비트율조절이가능한오디오부호화/복호화방법및장치 |
| WO1999062052A2 (en) * | 1998-05-27 | 1999-12-02 | Microsoft Corporation | System and method for entropy encoding quantized transform coefficients of a signal |
| ES2218148T5 (es) * | 1999-04-16 | 2008-02-16 | Dolby Laboratories Licensing Corporation | Empleo de cuantificacion de ganancia adaptable y longitudes no uniformes de simbolos para codificcion de audio. |
| DE60135487D1 (de) | 2000-12-22 | 2008-10-02 | Sony Corp | Codierer |
| AUPR433901A0 (en) * | 2001-04-10 | 2001-05-17 | Lake Technology Limited | High frequency signal construction method |
| US7240001B2 (en) * | 2001-12-14 | 2007-07-03 | Microsoft Corporation | Quality improvement techniques in an audio encoder |
| EP1472882A1 (en) * | 2002-01-22 | 2004-11-03 | Koninklijke Philips Electronics N.V. | Reducing bit rate of already compressed multimedia |
| US7099387B2 (en) * | 2002-03-22 | 2006-08-29 | Realnetorks, Inc. | Context-adaptive VLC video transform coefficients encoding/decoding methods and apparatuses |
| US7447631B2 (en) * | 2002-06-17 | 2008-11-04 | Dolby Laboratories Licensing Corporation | Audio coding system using spectral hole filling |
| US20030236674A1 (en) * | 2002-06-19 | 2003-12-25 | Henry Raymond C. | Methods and systems for compression of stored audio |
| CN100511425C (zh) * | 2003-11-14 | 2009-07-08 | 义隆电子股份有限公司 | 改善adpcm语音编码步长调节的方法及系统 |
| DE102004009955B3 (de) * | 2004-03-01 | 2005-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Ermitteln einer Quantisierer-Schrittweite |
| US7536302B2 (en) * | 2004-07-13 | 2009-05-19 | Industrial Technology Research Institute | Method, process and device for coding audio signals |
| DE102004036154B3 (de) * | 2004-07-26 | 2005-12-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zur robusten Klassifizierung von Audiosignalen sowie Verfahren zu Einrichtung und Betrieb einer Audiosignal-Datenbank sowie Computer-Programm |
| US7903137B2 (en) * | 2004-10-15 | 2011-03-08 | Lifesize Communications, Inc. | Videoconferencing echo cancellers |
| US7720232B2 (en) * | 2004-10-15 | 2010-05-18 | Lifesize Communications, Inc. | Speakerphone |
| US7760887B2 (en) * | 2004-10-15 | 2010-07-20 | Lifesize Communications, Inc. | Updating modeling information based on online data gathering |
| US8116500B2 (en) * | 2004-10-15 | 2012-02-14 | Lifesize Communications, Inc. | Microphone orientation and size in a speakerphone |
| US7970151B2 (en) * | 2004-10-15 | 2011-06-28 | Lifesize Communications, Inc. | Hybrid beamforming |
| US20060132595A1 (en) * | 2004-10-15 | 2006-06-22 | Kenoyer Michael L | Speakerphone supporting video and audio features |
| US7826624B2 (en) * | 2004-10-15 | 2010-11-02 | Lifesize Communications, Inc. | Speakerphone self calibration and beam forming |
| US7720236B2 (en) * | 2004-10-15 | 2010-05-18 | Lifesize Communications, Inc. | Updating modeling information based on offline calibration experiments |
| US7593539B2 (en) * | 2005-04-29 | 2009-09-22 | Lifesize Communications, Inc. | Microphone and speaker arrangement in speakerphone |
| US7991167B2 (en) * | 2005-04-29 | 2011-08-02 | Lifesize Communications, Inc. | Forming beams with nulls directed at noise sources |
| US7970150B2 (en) * | 2005-04-29 | 2011-06-28 | Lifesize Communications, Inc. | Tracking talkers using virtual broadside scan and directed beams |
| KR101364979B1 (ko) * | 2006-02-24 | 2014-02-20 | 오렌지 | 신호 엔벨로프의 양자화 인덱스들의 이진 코딩 방법과 신호엔벨로프의 디코딩 방법, 및 대응하는 코딩 모듈과 디코딩모듈 |
| US7966175B2 (en) * | 2006-10-18 | 2011-06-21 | Polycom, Inc. | Fast lattice vector quantization |
| US7953595B2 (en) * | 2006-10-18 | 2011-05-31 | Polycom, Inc. | Dual-transform coding of audio signals |
| US7885819B2 (en) | 2007-06-29 | 2011-02-08 | Microsoft Corporation | Bitstream syntax for multi-process audio decoding |
| EP4372744B1 (en) | 2008-07-11 | 2025-04-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for audio decoding and corresponding computer program |
| US8386266B2 (en) * | 2010-07-01 | 2013-02-26 | Polycom, Inc. | Full-band scalable audio codec |
| US8428959B2 (en) * | 2010-01-29 | 2013-04-23 | Polycom, Inc. | Audio packet loss concealment by transform interpolation |
| RU2464649C1 (ru) * | 2011-06-01 | 2012-10-20 | Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд." | Способ обработки звукового сигнала |
| EP2763137B1 (en) * | 2011-09-28 | 2016-09-14 | LG Electronics Inc. | Voice signal encoding method and voice signal decoding method |
| US9111524B2 (en) * | 2011-12-20 | 2015-08-18 | Dolby International Ab | Seamless playback of successive multimedia files |
| KR101757341B1 (ko) * | 2013-01-29 | 2017-07-14 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에.베. | 저-복잡도 음조-적응 오디오 신호 양자화 |
| WO2018126496A1 (en) | 2017-01-09 | 2018-07-12 | Qualcomm Incorporated | Bit allocation for encoding and decoding |
| US10523369B2 (en) | 2017-01-09 | 2019-12-31 | Qualcomm Incorporated | Mutual-information based recursive polar code construction |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142656A (en) * | 1989-01-27 | 1992-08-25 | Dolby Laboratories Licensing Corporation | Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| US5479562A (en) * | 1989-01-27 | 1995-12-26 | Dolby Laboratories Licensing Corporation | Method and apparatus for encoding and decoding audio information |
| US5109417A (en) * | 1989-01-27 | 1992-04-28 | Dolby Laboratories Licensing Corporation | Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| US5222189A (en) * | 1989-01-27 | 1993-06-22 | Dolby Laboratories Licensing Corporation | Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio |
| US5230038A (en) * | 1989-01-27 | 1993-07-20 | Fielder Louis D | Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| US5185800A (en) * | 1989-10-13 | 1993-02-09 | Centre National D'etudes Des Telecommunications | Bit allocation device for transformed digital audio broadcasting signals with adaptive quantization based on psychoauditive criterion |
| DE69210689T2 (de) * | 1991-01-08 | 1996-11-21 | Dolby Lab Licensing Corp | Kodierer/dekodierer für mehrdimensionale schallfelder |
| US5317672A (en) * | 1991-03-05 | 1994-05-31 | Picturetel Corporation | Variable bit rate speech encoder |
| EP0525809B1 (en) * | 1991-08-02 | 2001-12-05 | Sony Corporation | Digital encoder with dynamic quantization bit allocation |
| JP3134455B2 (ja) * | 1992-01-29 | 2001-02-13 | ソニー株式会社 | 高能率符号化装置及び方法 |
| JP3153933B2 (ja) * | 1992-06-16 | 2001-04-09 | ソニー株式会社 | データ符号化装置及び方法並びにデータ復号化装置及び方法 |
| KR100188912B1 (ko) * | 1992-09-21 | 1999-06-01 | 윤종용 | 서브밴드코딩의 비트재할당 방법 |
| JP3123286B2 (ja) * | 1993-02-18 | 2001-01-09 | ソニー株式会社 | ディジタル信号処理装置又は方法、及び記録媒体 |
| JPH09503630A (ja) * | 1993-07-07 | 1997-04-08 | ピクチャーテル コーポレイション | 固定ビットレートのスピーチエンコーダ／デコーダ |
| US5664057A (en) * | 1993-07-07 | 1997-09-02 | Picturetel Corporation | Fixed bit rate speech encoder/decoder |
| US5774846A (en) * | 1994-12-19 | 1998-06-30 | Matsushita Electric Industrial Co., Ltd. | Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus |
| EP0720316B1 (en) * | 1994-12-30 | 1999-12-08 | Daewoo Electronics Co., Ltd | Adaptive digital audio encoding apparatus and a bit allocation method thereof |
| JP2982637B2 (ja) * | 1995-01-17 | 1999-11-29 | 日本電気株式会社 | スペクトルパラメータを用いた音声信号伝送システムおよびそれに用いられる音声パラメータ符号化装置および復号化装置 |
-
1996
- 1996-10-07 US US08/726,959 patent/US5924064A/en not_active Expired - Lifetime
-
1997
- 1997-10-06 WO PCT/US1997/017770 patent/WO1998015945A1/en not_active Ceased
- 1997-10-06 JP JP51760498A patent/JP4237826B2/ja not_active Expired - Fee Related
- 1997-10-06 EP EP97911610A patent/EP0968497B1/en not_active Expired - Lifetime
- 1997-10-06 DE DE69705642T patent/DE69705642T2/de not_active Expired - Lifetime
- 1997-10-06 CA CA002267764A patent/CA2267764A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0968497A1 (en) | 2000-01-05 |
| JP2001502073A (ja) | 2001-02-13 |
| EP0968497A4 (en) | 2000-02-23 |
| WO1998015945A1 (en) | 1998-04-16 |
| EP0968497B1 (en) | 2001-07-11 |
| US5924064A (en) | 1999-07-13 |
| DE69705642D1 (de) | 2001-08-16 |
| JP4237826B2 (ja) | 2009-03-11 |
| DE69705642T2 (de) | 2002-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |