JPH11504438A - 分析合成線形予測音声符号化における利得量子化方法 - Google Patents
分析合成線形予測音声符号化における利得量子化方法Info
- Publication number
- JPH11504438A JPH11504438A JP8533222A JP53322296A JPH11504438A JP H11504438 A JPH11504438 A JP H11504438A JP 8533222 A JP8533222 A JP 8533222A JP 53322296 A JP53322296 A JP 53322296A JP H11504438 A JPH11504438 A JP H11504438A
- Authority
- JP
- Japan
- Prior art keywords
- codebook
- gain
- optimal
- vector
- linear prediction
- 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
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000013139 quantization Methods 0.000 title claims abstract description 35
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 14
- 239000013598 vector Substances 0.000 claims abstract description 59
- 230000005284 excitation Effects 0.000 claims abstract description 38
- 230000003044 adaptive effect Effects 0.000 claims description 18
- 238000004458 analytical method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
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- 238000010079 rubber tapping Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L19/04—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 predictive techniques
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L2019/0001—Codebooks
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.分析合成線形予測音声符号化における利得量子化方法であって、 第1コードブックからの最適第1ベクトルのための最適第1ベクトルを決定し 、 前記最適第1利得を量子化し、 第2コードブックからの最適第2ベクトルのための最適第2ベクトルを決定し、 少なくとも前記量子化された最適第1利得から前記最適第2利得の対数の第1 線形予測を決定し、 前記最適第2利得の対数と前記第1線形予測の間の第1の差を量子化すること を含む利得量子化方法。 2.前記第1線形予測は、前記量子化された最適第一利得の積の対数と、前記 最適第1ベクトルのエネルギーの平方根の測度を含む第1項の方法。 3.前記第1コードブックは適応型コードブックであり、前記第2コードブッ クは固定コードブックである第2項の方法。 4.前記第1コードブックはマルチパルス励起コードブックであり、前記第2 コードブックは変換2進パルス励起コードブックである第2項の方法。 5.前記測度は、前記最適第1ベクトルの複数の成分の平方の和の平方根を含 む請求項3または4の方法。 6.前記測度は、前記最適第1ベクトルの平均パルス振幅を含む請求項4の方 法。 7.前記量子化された第1の差から前記最適第2利得を決定し量子化し、 第3コードブックから最適第3ベクトルのための最適第3利得を決定し、 少なくとも前記量子化された最適第2利得から、前記最適第3利得の対数の第 2線形予測を決定し、 前記最適第3利得の対数と前記第2線形予測の間の第2の差を定量化すること を更に含む請求項1の方法。 8.前記第1コードブックは適応型コードブックであり、前記第2コードブッ クはマルチパルス励起コードブックであり、前記第3コードブックは変換2進パ ルス励起コードブックである請求項7の方法。 9.前記第1線形予測は、また、あらかじめ決定された励起からの量子化され た利得を含む請求項1の方法。 10.前記第1および第2線形予測はまた、あらかじめ決定された励起からの量 子化された利得を含む請求項7の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9501640A SE504397C2 (sv) | 1995-05-03 | 1995-05-03 | Metod för förstärkningskvantisering vid linjärprediktiv talkodning med kodboksexcitering |
SE9501640-8 | 1995-05-03 | ||
PCT/SE1996/000481 WO1996035208A1 (en) | 1995-05-03 | 1996-04-12 | A gain quantization method in analysis-by-synthesis linear predictive speech coding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11504438A true JPH11504438A (ja) | 1999-04-20 |
JP4059350B2 JP4059350B2 (ja) | 2008-03-12 |
Family
ID=20398181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53322296A Expired - Lifetime JP4059350B2 (ja) | 1995-05-03 | 1996-04-12 | 分析合成線形予測音声符号化における利得量子化方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5970442A (ja) |
EP (1) | EP0824750B1 (ja) |
JP (1) | JP4059350B2 (ja) |
CN (1) | CN1151492C (ja) |
AU (1) | AU5519696A (ja) |
DE (1) | DE69610915T2 (ja) |
SE (1) | SE504397C2 (ja) |
WO (1) | WO1996035208A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014007349A1 (ja) * | 2012-07-05 | 2014-01-09 | 日本電信電話株式会社 | 符号化装置、復号装置、これらの方法、プログラム、および記録媒体 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6266419B1 (en) * | 1997-07-03 | 2001-07-24 | At&T Corp. | Custom character-coding compression for encoding and watermarking media content |
JP3998330B2 (ja) * | 1998-06-08 | 2007-10-24 | 沖電気工業株式会社 | 符号化装置 |
US7072832B1 (en) | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
US6330531B1 (en) * | 1998-08-24 | 2001-12-11 | Conexant Systems, Inc. | Comb codebook structure |
SE519563C2 (sv) * | 1998-09-16 | 2003-03-11 | Ericsson Telefon Ab L M | Förfarande och kodare för linjär prediktiv analys-genom- synteskodning |
US6397178B1 (en) | 1998-09-18 | 2002-05-28 | Conexant Systems, Inc. | Data organizational scheme for enhanced selection of gain parameters for speech coding |
US6581032B1 (en) * | 1999-09-22 | 2003-06-17 | Conexant Systems, Inc. | Bitstream protocol for transmission of encoded voice signals |
CA2327041A1 (en) * | 2000-11-22 | 2002-05-22 | Voiceage Corporation | A method for indexing pulse positions and signs in algebraic codebooks for efficient coding of wideband signals |
DE10124420C1 (de) * | 2001-05-18 | 2002-11-28 | Siemens Ag | Verfahren zur Codierung und zur Übertragung von Sprachsignalen |
JP4390803B2 (ja) * | 2003-05-01 | 2009-12-24 | ノキア コーポレイション | 可変ビットレート広帯域通話符号化におけるゲイン量子化方法および装置 |
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 |
US20070174054A1 (en) * | 2006-01-25 | 2007-07-26 | Mediatek Inc. | Communication apparatus with signal mode and voice mode |
EP2227682A1 (en) * | 2007-11-06 | 2010-09-15 | Nokia Corporation | An encoder |
CA2704812C (en) * | 2007-11-06 | 2016-05-17 | Nokia Corporation | An encoder for encoding an audio signal |
CN101499281B (zh) * | 2008-01-31 | 2011-04-27 | 华为技术有限公司 | 一种语音编码中的增益量化方法及装置 |
CN102057424B (zh) * | 2008-06-13 | 2015-06-17 | 诺基亚公司 | 用于经编码的音频数据的错误隐藏的方法和装置 |
US9626982B2 (en) | 2011-02-15 | 2017-04-18 | Voiceage Corporation | Device and method for quantizing the gains of the adaptive and fixed contributions of the excitation in a CELP codec |
WO2012109734A1 (en) * | 2011-02-15 | 2012-08-23 | Voiceage Corporation | Device and method for quantizing the gains of the adaptive and fixed contributions of the excitation in a celp codec |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2776050B2 (ja) * | 1991-02-26 | 1998-07-16 | 日本電気株式会社 | 音声符号化方式 |
GB9118217D0 (en) * | 1991-08-23 | 1991-10-09 | British Telecomm | Speech processing apparatus |
US5327520A (en) * | 1992-06-04 | 1994-07-05 | At&T Bell Laboratories | Method of use of voice message coder/decoder |
US5313554A (en) * | 1992-06-16 | 1994-05-17 | At&T Bell Laboratories | Backward gain adaptation method in code excited linear prediction coders |
EP0751496B1 (en) * | 1992-06-29 | 2000-04-19 | Nippon Telegraph And Telephone Corporation | Speech coding method and apparatus for the same |
US5615298A (en) * | 1994-03-14 | 1997-03-25 | Lucent Technologies Inc. | Excitation signal synthesis during frame erasure or packet loss |
-
1995
- 1995-05-03 SE SE9501640A patent/SE504397C2/sv not_active IP Right Cessation
-
1996
- 1996-04-12 JP JP53322296A patent/JP4059350B2/ja not_active Expired - Lifetime
- 1996-04-12 EP EP96912361A patent/EP0824750B1/en not_active Expired - Lifetime
- 1996-04-12 AU AU55196/96A patent/AU5519696A/en not_active Abandoned
- 1996-04-12 WO PCT/SE1996/000481 patent/WO1996035208A1/en active IP Right Grant
- 1996-04-12 CN CNB961949120A patent/CN1151492C/zh not_active Expired - Fee Related
- 1996-04-12 DE DE69610915T patent/DE69610915T2/de not_active Expired - Lifetime
-
1997
- 1997-10-31 US US08/961,867 patent/US5970442A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014007349A1 (ja) * | 2012-07-05 | 2014-01-09 | 日本電信電話株式会社 | 符号化装置、復号装置、これらの方法、プログラム、および記録媒体 |
JP5762636B2 (ja) * | 2012-07-05 | 2015-08-12 | 日本電信電話株式会社 | 符号化装置、復号装置、これらの方法、プログラム、および記録媒体 |
Also Published As
Publication number | Publication date |
---|---|
WO1996035208A1 (en) | 1996-11-07 |
DE69610915D1 (de) | 2000-12-14 |
US5970442A (en) | 1999-10-19 |
CN1188556A (zh) | 1998-07-22 |
EP0824750B1 (en) | 2000-11-08 |
CN1151492C (zh) | 2004-05-26 |
DE69610915T2 (de) | 2001-03-15 |
SE9501640L (sv) | 1996-11-04 |
EP0824750A1 (en) | 1998-02-25 |
AU5519696A (en) | 1996-11-21 |
SE504397C2 (sv) | 1997-01-27 |
SE9501640D0 (sv) | 1995-05-03 |
JP4059350B2 (ja) | 2008-03-12 |
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