BR9710640A - Método e aparelho para busca de um livro de códigos de excitação em um codificador de predição linear excitado por código (clep) - Google Patents
Método e aparelho para busca de um livro de códigos de excitação em um codificador de predição linear excitado por código (clep)Info
- Publication number
- BR9710640A BR9710640A BR9710640-2A BR9710640A BR9710640A BR 9710640 A BR9710640 A BR 9710640A BR 9710640 A BR9710640 A BR 9710640A BR 9710640 A BR9710640 A BR 9710640A
- Authority
- BR
- Brazil
- Prior art keywords
- clep
- searching
- linear prediction
- excited linear
- code excited
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000005284 excitation Effects 0.000 title 1
- 239000011159 matrix material Substances 0.000 abstract 2
Classifications
-
- 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
- G10L15/00—Speech recognition
- G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
-
- 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
- G10L19/12—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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L25/06—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 correlation coefficients
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Abstract
"MéTODO E APARELHO PARA BUSCA DE UM LIVRO DE CóDIGOS DE EXCITAçãO EM UM CODIFICADOR DE PREDIçãO LINEAR EXCITADO POR CóDIGO (CELP)". São descritos um método e um aparelho para selecionar um vetor de código em um livro de código (codebook) algébrico em que a janela ou intervalo de análise para o codificador é estendido para além do comprimento do quadro de fala meta ou objetivo. Um sinal de entrada ou alimentação é filtrado por um filtro de pesagem de percepção (76). A seguir o filtro é ajustado para requisitar um número de amostras igual ao comprimento do filtro de pesagem de percepção (76), enquanto um vetor de entrada zero é aplicado como entrada. Pela extensão da janela de análise, a matriz bidimensional de resposta a impulso pode ser armazenada na forma de uma matriz unidimensional de autocorrelação na memória (60,80), economizando sobremaneira na complexidade e memória computacionais necessárias para a busca.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/690,709 US5751901A (en) | 1996-07-31 | 1996-07-31 | Method for searching an excitation codebook in a code excited linear prediction (CELP) coder |
PCT/US1997/013594 WO1998005030A1 (en) | 1996-07-31 | 1997-07-31 | Method and apparatus for searching an excitation codebook in a code excited linear prediction (clep) coder |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9710640A true BR9710640A (pt) | 2002-08-06 |
Family
ID=24773618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9710640-2A BR9710640A (pt) | 1996-07-31 | 1997-07-31 | Método e aparelho para busca de um livro de códigos de excitação em um codificador de predição linear excitado por código (clep) |
Country Status (13)
Country | Link |
---|---|
US (1) | US5751901A (pt) |
EP (1) | EP0917710B1 (pt) |
JP (1) | JP2000515998A (pt) |
KR (1) | KR100497788B1 (pt) |
CN (1) | CN1124589C (pt) |
AT (1) | ATE259532T1 (pt) |
AU (1) | AU719568B2 (pt) |
BR (1) | BR9710640A (pt) |
CA (1) | CA2261956A1 (pt) |
DE (1) | DE69727578D1 (pt) |
FI (1) | FI990181A (pt) |
IL (1) | IL128285A0 (pt) |
WO (1) | WO1998005030A1 (pt) |
Families Citing this family (20)
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US6714907B2 (en) * | 1998-08-24 | 2004-03-30 | Mindspeed Technologies, Inc. | Codebook structure and search for speech coding |
KR100576024B1 (ko) * | 2000-04-12 | 2006-05-02 | 삼성전자주식회사 | 에이켈프 음성 압축기의 코드북 검색 장치 및 방법 |
US7363219B2 (en) * | 2000-09-22 | 2008-04-22 | Texas Instruments Incorporated | Hybrid speech coding and system |
US7606703B2 (en) * | 2000-11-15 | 2009-10-20 | Texas Instruments Incorporated | Layered celp system and method with varying perceptual filter or short-term postfilter strengths |
US6766289B2 (en) * | 2001-06-04 | 2004-07-20 | Qualcomm Incorporated | Fast code-vector searching |
US6789059B2 (en) * | 2001-06-06 | 2004-09-07 | Qualcomm Incorporated | Reducing memory requirements of a codebook vector search |
DE10140507A1 (de) * | 2001-08-17 | 2003-02-27 | Philips Corp Intellectual Pty | Verfahren für die algebraische Codebook-Suche eines Sprachsignalkodierers |
US7047188B2 (en) * | 2002-11-08 | 2006-05-16 | Motorola, Inc. | Method and apparatus for improvement coding of the subframe gain in a speech coding system |
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JP3887598B2 (ja) * | 2002-11-14 | 2007-02-28 | 松下電器産業株式会社 | 確率的符号帳の音源の符号化方法及び復号化方法 |
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WO2004097796A1 (ja) * | 2003-04-30 | 2004-11-11 | Matsushita Electric Industrial Co., Ltd. | 音声符号化装置、音声復号化装置及びこれらの方法 |
KR100668300B1 (ko) * | 2003-07-09 | 2007-01-12 | 삼성전자주식회사 | 비트율 확장 음성 부호화 및 복호화 장치와 그 방법 |
CN1886781B (zh) * | 2003-12-02 | 2011-05-04 | 汤姆森许可贸易公司 | 用于编码和解码音频信号的冲激响应的方法 |
JP3981399B1 (ja) * | 2006-03-10 | 2007-09-26 | 松下電器産業株式会社 | 固定符号帳探索装置および固定符号帳探索方法 |
US8920343B2 (en) | 2006-03-23 | 2014-12-30 | Michael Edward Sabatino | Apparatus for acquiring and processing of physiological auditory signals |
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-
1996
- 1996-07-31 US US08/690,709 patent/US5751901A/en not_active Expired - Lifetime
-
1997
- 1997-07-31 AU AU39694/97A patent/AU719568B2/en not_active Expired
- 1997-07-31 EP EP97937095A patent/EP0917710B1/en not_active Expired - Lifetime
- 1997-07-31 AT AT97937095T patent/ATE259532T1/de not_active IP Right Cessation
- 1997-07-31 CA CA002261956A patent/CA2261956A1/en not_active Abandoned
- 1997-07-31 IL IL12828597A patent/IL128285A0/xx unknown
- 1997-07-31 JP JP10509169A patent/JP2000515998A/ja active Pending
- 1997-07-31 CN CN97197717A patent/CN1124589C/zh not_active Expired - Lifetime
- 1997-07-31 BR BR9710640-2A patent/BR9710640A/pt not_active IP Right Cessation
- 1997-07-31 WO PCT/US1997/013594 patent/WO1998005030A1/en active IP Right Grant
- 1997-07-31 DE DE69727578T patent/DE69727578D1/de not_active Expired - Lifetime
- 1997-07-31 KR KR10-1999-7000852A patent/KR100497788B1/ko active IP Right Grant
-
1999
- 1999-02-01 FI FI990181A patent/FI990181A/fi not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JP2000515998A (ja) | 2000-11-28 |
DE69727578D1 (de) | 2004-03-18 |
KR100497788B1 (ko) | 2005-06-29 |
EP0917710A1 (en) | 1999-05-26 |
WO1998005030A1 (en) | 1998-02-05 |
ATE259532T1 (de) | 2004-02-15 |
AU719568B2 (en) | 2000-05-11 |
CA2261956A1 (en) | 1998-02-05 |
CN1124589C (zh) | 2003-10-15 |
EP0917710B1 (en) | 2004-02-11 |
AU3969497A (en) | 1998-02-20 |
FI990181A0 (fi) | 1999-02-01 |
CN1229502A (zh) | 1999-09-22 |
FI990181A (fi) | 1999-03-31 |
US5751901A (en) | 1998-05-12 |
IL128285A0 (en) | 2000-02-17 |
KR20000029745A (ko) | 2000-05-25 |
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Legal Events
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 6A,7A E 8A ANUIDADES. |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1836 DE 14/03/2006. |
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B15K | Others concerning applications: alteration of classification |
Ipc: G10L 19/12 (2013.01), G10L 25/06 (2013.0 |