KR19990023932A - 스위치식 예측 양자화 방법 - Google Patents
스위치식 예측 양자화 방법 Download PDFInfo
- Publication number
- KR19990023932A KR19990023932A KR1019980034832A KR19980034832A KR19990023932A KR 19990023932 A KR19990023932 A KR 19990023932A KR 1019980034832 A KR1019980034832 A KR 1019980034832A KR 19980034832 A KR19980034832 A KR 19980034832A KR 19990023932 A KR19990023932 A KR 19990023932A
- Authority
- KR
- South Korea
- Prior art keywords
- quantization
- value
- vector
- input
- prediction
- Prior art date
Links
- 238000013139 quantization Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000013598 vector Substances 0.000 claims abstract description 90
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- 230000008030 elimination Effects 0.000 claims description 8
- 238000003379 elimination reaction Methods 0.000 claims description 8
- 230000003595 spectral effect Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000005311 autocorrelation function Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010845 search algorithm Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
-
- 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
- G10L19/04—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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- 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
- G10L19/04—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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
- G10L19/07—Line spectrum pair [LSP] vocoders
-
- 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
- G10L2019/0001—Codebooks
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/12—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being prediction coefficients
Abstract
Description
Claims (6)
- 입력을 양자화하는 스위치식 예측 방법(switched predictive method of quantizing an input)에 있어서,평균값을 제공하고 상기 입력으로부터 상기 평균값을 감산하여 평균 제거 입력(mean-removed input)을 얻는 단계와;양자화기에 제1 및 제2 코드북 세트를 제공하는 단계와;제1 및 제2 예측 매트릭스를 제공하는 단계와;이전 프레임 평균 양자화값(previous frame mean-removed quantized value)을 상기 제1 예측 매트릭스로 승산한 다음 상기 제2 예측 매트릭스로 승산하여, 제1 예측값을 얻은 다음 제2 예측값을 얻는 단계와;상기 평균 제거 입력으로부터 상기 예측값을 감산하여 목표값(target values)을 얻는 단계와;상기 목표값을 상기 코드북 세트들에 적용하여 양자화 목표값을 얻는 단계와;상기 예측값을 상기 양자화 목표값에 가산하여 평균 제거 양자화값을 얻는 단계와;평균값을 상기 평균 제거 양자화값에 가산하여 양자화값을 얻는 단계와;코드북 세트와 예측 매트릭스중 어느 것이 최소의 에러를 가지고 있는지를 판정하여, 최저 에러를 갖고 있는 그 세트에 대응하는 양자화 출력을 제공하는 단계를 포함하는 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
- 제1항에 있어서, 상기 입력은 LPC 계수 세트에 대응하는 LSF 계수인 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
- 제2항에 있어서, 상기 판정 단계는 상기 입력 벡터와 상기 양자화 출력 간의 각각의 디멘젼(dimension)에 대한 스퀘어 에러(squared error)를 판정하는 단계를 포함하는 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
- 제3항에 있어서, 상기 스퀘어 에러는 각각의 디멘젼에 대한 가중치(weighting value)로 승산되는 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
- 제4항에 있어서, 상기 가중 함수(weighting function)는 LSF 양자화를 위한 유클리디안 거리(Euclidean distance)인 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
- 제3항에 있어서, 상기 가중 함수는 스펙트럼 왜곡의 지각적 가중 형태(perceptually weighted form)에 밀접하게 대응하는 가중 LSF 거리(weighted LSF distance)인 것을 특징으로 하는 입력을 양자화하는 스위치식 예측 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5711997P | 1997-08-28 | 1997-08-28 | |
US60/057,119 | 1997-08-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990023932A true KR19990023932A (ko) | 1999-03-25 |
KR100889399B1 KR100889399B1 (ko) | 2009-06-03 |
Family
ID=22008627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980034832A KR100889399B1 (ko) | 1997-08-28 | 1998-08-27 | 스위치식예측양자화방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6122608A (ko) |
EP (1) | EP0905680B1 (ko) |
JP (1) | JPH11143499A (ko) |
KR (1) | KR100889399B1 (ko) |
DE (1) | DE69815242T2 (ko) |
TW (1) | TW408298B (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100647290B1 (ko) * | 2004-09-22 | 2006-11-23 | 삼성전자주식회사 | 합성된 음성의 특성을 이용하여 양자화/역양자화를선택하는 음성 부호화/복호화 장치 및 그 방법 |
WO2012053798A2 (en) * | 2010-10-18 | 2012-04-26 | Samsung Electronics Co., Ltd. | Apparatus and method for determining weighting function having low complexity for linear predictive coding (lpc) coefficients quantization |
Families Citing this family (36)
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JPH11143498A (ja) * | 1997-08-28 | 1999-05-28 | Texas Instr Inc <Ti> | Lpc係数のベクトル量子化方法 |
DE69836624T2 (de) * | 1997-10-22 | 2007-04-05 | Matsushita Electric Industrial Co., Ltd., Kadoma | Audiokodierer und -dekodierer |
SE521225C2 (sv) | 1998-09-16 | 2003-10-14 | Ericsson Telefon Ab L M | Förfarande och anordning för CELP-kodning/avkodning |
US7295974B1 (en) * | 1999-03-12 | 2007-11-13 | Texas Instruments Incorporated | Encoding in speech compression |
JP3292711B2 (ja) * | 1999-08-06 | 2002-06-17 | 株式会社ワイ・アール・ピー高機能移動体通信研究所 | 音声符号化復号方法および装置 |
KR100324204B1 (ko) * | 1999-12-24 | 2002-02-16 | 오길록 | 예측분할벡터양자화 및 예측분할행렬양자화 방식에 의한선스펙트럼쌍 양자화기의 고속탐색방법 |
EP1199812A1 (en) * | 2000-10-20 | 2002-04-24 | Telefonaktiebolaget Lm Ericsson | Perceptually improved encoding of acoustic signals |
US20030195745A1 (en) * | 2001-04-02 | 2003-10-16 | Zinser, Richard L. | LPC-to-MELP transcoder |
US20030028386A1 (en) * | 2001-04-02 | 2003-02-06 | Zinser Richard L. | Compressed domain universal transcoder |
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US20030135547A1 (en) * | 2001-07-23 | 2003-07-17 | Kent J. Thomas | Extensible modular communication executive with active message queue and intelligent message pre-validation |
WO2003071522A1 (fr) * | 2002-02-20 | 2003-08-28 | Matsushita Electric Industrial Co., Ltd. | Procede de production de vecteur de source sonore fixe et table de codage de source sonore fixe |
US8090577B2 (en) * | 2002-08-08 | 2012-01-03 | Qualcomm Incorported | Bandwidth-adaptive quantization |
CA2415105A1 (en) * | 2002-12-24 | 2004-06-24 | Voiceage Corporation | A method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding |
US6917914B2 (en) * | 2003-01-31 | 2005-07-12 | Harris Corporation | Voice over bandwidth constrained lines with mixed excitation linear prediction transcoding |
KR100486732B1 (ko) * | 2003-02-19 | 2005-05-03 | 삼성전자주식회사 | 블럭제한된 트렐리스 부호화 양자화방법과 음성부호화시스템에있어서 이를 채용한 라인스펙트럼주파수 계수양자화방법 및 장치 |
US20060080090A1 (en) * | 2004-10-07 | 2006-04-13 | Nokia Corporation | Reusing codebooks in parameter quantization |
KR101565919B1 (ko) * | 2006-11-17 | 2015-11-05 | 삼성전자주식회사 | 고주파수 신호 부호화 및 복호화 방법 및 장치 |
JP2008170488A (ja) * | 2007-01-06 | 2008-07-24 | Yamaha Corp | 波形圧縮装置、波形伸長装置、プログラムおよび圧縮データの生産方法 |
US8126707B2 (en) * | 2007-04-05 | 2012-02-28 | Texas Instruments Incorporated | Method and system for speech compression |
CN101335004B (zh) * | 2007-11-02 | 2010-04-21 | 华为技术有限公司 | 一种多级量化的方法及装置 |
CN102089810B (zh) * | 2008-07-10 | 2013-05-08 | 沃伊斯亚吉公司 | 多基准线性预测系数滤波器量化和逆量化设备及方法 |
GB2466670B (en) * | 2009-01-06 | 2012-11-14 | Skype | Speech encoding |
GB2466675B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
GB2466672B (en) * | 2009-01-06 | 2013-03-13 | Skype | Speech coding |
GB2466671B (en) * | 2009-01-06 | 2013-03-27 | Skype | Speech encoding |
GB2466669B (en) * | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
GB2466673B (en) * | 2009-01-06 | 2012-11-07 | Skype | Quantization |
GB2466674B (en) * | 2009-01-06 | 2013-11-13 | Skype | Speech coding |
US8452606B2 (en) * | 2009-09-29 | 2013-05-28 | Skype | Speech encoding using multiple bit rates |
KR101660843B1 (ko) | 2010-05-27 | 2016-09-29 | 삼성전자주식회사 | Lpc 계수 양자화를 위한 가중치 함수 결정 장치 및 방법 |
TWI456516B (zh) * | 2010-12-17 | 2014-10-11 | Univ Nat Chiao Tung | 獨立成分分析處理器 |
JP2013140494A (ja) * | 2012-01-05 | 2013-07-18 | Kddi Corp | 高次元の特徴ベクトルを検索する検索装置及びプログラム |
WO2015145266A2 (ko) | 2014-03-28 | 2015-10-01 | 삼성전자 주식회사 | 선형예측계수 양자화방법 및 장치와 역양자화 방법 및 장치 |
JP6270993B2 (ja) | 2014-05-01 | 2018-01-31 | 日本電信電話株式会社 | 符号化装置、及びその方法、プログラム、記録媒体 |
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1998
- 1998-08-12 TW TW087113221A patent/TW408298B/zh not_active IP Right Cessation
- 1998-08-15 US US09/134,774 patent/US6122608A/en not_active Expired - Lifetime
- 1998-08-27 JP JP10242057A patent/JPH11143499A/ja active Pending
- 1998-08-27 KR KR1019980034832A patent/KR100889399B1/ko not_active IP Right Cessation
- 1998-08-27 DE DE69815242T patent/DE69815242T2/de not_active Expired - Lifetime
- 1998-08-27 EP EP98306903A patent/EP0905680B1/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100647290B1 (ko) * | 2004-09-22 | 2006-11-23 | 삼성전자주식회사 | 합성된 음성의 특성을 이용하여 양자화/역양자화를선택하는 음성 부호화/복호화 장치 및 그 방법 |
WO2012053798A2 (en) * | 2010-10-18 | 2012-04-26 | Samsung Electronics Co., Ltd. | Apparatus and method for determining weighting function having low complexity for linear predictive coding (lpc) coefficients quantization |
WO2012053798A3 (en) * | 2010-10-18 | 2012-06-14 | Samsung Electronics Co., Ltd. | Apparatus and method for determining weighting function having low complexity for linear predictive coding (lpc) coefficients quantization |
CN103262161A (zh) * | 2010-10-18 | 2013-08-21 | 三星电子株式会社 | 确定用于线性预测编码(lpc)系数量化的具有低复杂度的加权函数的设备和方法 |
US9311926B2 (en) | 2010-10-18 | 2016-04-12 | Samsung Electronics Co., Ltd. | Apparatus and method for determining weighting function having for associating linear predictive coding (LPC) coefficients with line spectral frequency coefficients and immittance spectral frequency coefficients |
US9773507B2 (en) | 2010-10-18 | 2017-09-26 | Samsung Electronics Co., Ltd. | Apparatus and method for determining weighting function having for associating linear predictive coding (LPC) coefficients with line spectral frequency coefficients and immittance spectral frequency coefficients |
US10580425B2 (en) | 2010-10-18 | 2020-03-03 | Samsung Electronics Co., Ltd. | Determining weighting functions for line spectral frequency coefficients |
Also Published As
Publication number | Publication date |
---|---|
KR100889399B1 (ko) | 2009-06-03 |
TW408298B (en) | 2000-10-11 |
EP0905680A3 (en) | 1999-09-29 |
EP0905680A2 (en) | 1999-03-31 |
DE69815242T2 (de) | 2004-04-15 |
JPH11143499A (ja) | 1999-05-28 |
EP0905680B1 (en) | 2003-06-04 |
US6122608A (en) | 2000-09-19 |
DE69815242D1 (de) | 2003-07-10 |
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