DE69934320D1 - Sprachkodierer und verfahren zur codebuch-suche - Google Patents

Sprachkodierer und verfahren zur codebuch-suche

Info

Publication number
DE69934320D1
DE69934320D1 DE69934320T DE69934320T DE69934320D1 DE 69934320 D1 DE69934320 D1 DE 69934320D1 DE 69934320 T DE69934320 T DE 69934320T DE 69934320 T DE69934320 T DE 69934320T DE 69934320 D1 DE69934320 D1 DE 69934320D1
Authority
DE
Germany
Prior art keywords
codier
language
code book
search procedure
book search
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.)
Expired - Lifetime
Application number
DE69934320T
Other languages
English (en)
Other versions
DE69934320T2 (de
Inventor
Yang Gao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HTC Corp
Original Assignee
Mindspeed Technologies LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mindspeed Technologies LLC filed Critical Mindspeed Technologies LLC
Application granted granted Critical
Publication of DE69934320D1 publication Critical patent/DE69934320D1/de
Publication of DE69934320T2 publication Critical patent/DE69934320T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/012—Comfort noise or silence coding
    • 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
    • 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
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • 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
    • G10L19/125—Pitch excitation, e.g. pitch synchronous innovation CELP [PSI-CELP]
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • 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
    • G10L2019/0007—Codebook element generation
    • 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
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE69934320T 1998-08-24 1999-08-24 Sprachkodierer und verfahren zur codebuch-suche Expired - Lifetime DE69934320T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US9756998P 1998-08-24 1998-08-24
US97569P 1998-08-24
US09/156,814 US6173257B1 (en) 1998-08-24 1998-09-18 Completed fixed codebook for speech encoder
PCT/US1999/019591 WO2000011657A1 (en) 1998-08-24 1999-08-24 Completed fixed codebook for speech encoder
US156814 2002-05-30

Publications (2)

Publication Number Publication Date
DE69934320D1 true DE69934320D1 (de) 2007-01-18
DE69934320T2 DE69934320T2 (de) 2007-06-06

Family

ID=26793426

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69934320T Expired - Lifetime DE69934320T2 (de) 1998-08-24 1999-08-24 Sprachkodierer und verfahren zur codebuch-suche

Country Status (6)

Country Link
US (1) US6173257B1 (de)
EP (1) EP1105872B1 (de)
DE (1) DE69934320T2 (de)
HK (1) HK1038422A1 (de)
TW (1) TW454169B (de)
WO (1) WO2000011657A1 (de)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058359A (en) * 1998-03-04 2000-05-02 Telefonaktiebolaget L M Ericsson Speech coding including soft adaptability feature
US6182033B1 (en) * 1998-01-09 2001-01-30 At&T Corp. Modular approach to speech enhancement with an application to speech coding
US7392180B1 (en) * 1998-01-09 2008-06-24 At&T Corp. System and method of coding sound signals using sound enhancement
TW376611B (en) * 1998-05-26 1999-12-11 Koninkl Philips Electronics Nv Transmission system with improved speech encoder
US6714907B2 (en) 1998-08-24 2004-03-30 Mindspeed Technologies, Inc. Codebook structure and search for speech coding
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
US6556966B1 (en) 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
SE9803698L (sv) * 1998-10-26 2000-04-27 Ericsson Telefon Ab L M Metoder och anordningar i ett telekommunikationssystem
US6424938B1 (en) * 1998-11-23 2002-07-23 Telefonaktiebolaget L M Ericsson Complex signal activity detection for improved speech/noise classification of an audio signal
IL129752A (en) * 1999-05-04 2003-01-12 Eci Telecom Ltd Telecommunication method and system for using same
US6381568B1 (en) * 1999-05-05 2002-04-30 The United States Of America As Represented By The National Security Agency Method of transmitting speech using discontinuous transmission and comfort noise
JP2001109489A (ja) * 1999-08-03 2001-04-20 Canon Inc 音声情報処理方法、装置および記憶媒体
US6523002B1 (en) * 1999-09-30 2003-02-18 Conexant Systems, Inc. Speech coding having continuous long term preprocessing without any delay
US6901362B1 (en) * 2000-04-19 2005-05-31 Microsoft Corporation Audio segmentation and classification
CN1383544A (zh) * 2000-07-05 2002-12-04 皇家菲利浦电子有限公司 计算线谱频率的方法
AU2001287973A1 (en) * 2000-09-15 2002-03-26 Conexant Systems, Inc. System for improved use of pitch enhancement with subcodebooks
US6529867B2 (en) * 2000-09-15 2003-03-04 Conexant Systems, Inc. Injecting high frequency noise into pulse excitation for low bit rate CELP
US6980948B2 (en) * 2000-09-15 2005-12-27 Mindspeed Technologies, Inc. System of dynamic pulse position tracks for pulse-like excitation in speech coding
US7124076B2 (en) * 2000-12-14 2006-10-17 Sony Corporation Encoding apparatus and decoding apparatus
JP3404016B2 (ja) * 2000-12-26 2003-05-06 三菱電機株式会社 音声符号化装置及び音声符号化方法
US20040204935A1 (en) * 2001-02-21 2004-10-14 Krishnasamy Anandakumar Adaptive voice playout in VOP
JP3582589B2 (ja) * 2001-03-07 2004-10-27 日本電気株式会社 音声符号化装置及び音声復号化装置
JP2003044098A (ja) * 2001-07-26 2003-02-14 Nec Corp 音声帯域拡張装置及び音声帯域拡張方法
US7647223B2 (en) * 2001-08-16 2010-01-12 Broadcom Corporation Robust composite quantization with sub-quantizers and inverse sub-quantizers using illegal space
US7617096B2 (en) * 2001-08-16 2009-11-10 Broadcom Corporation Robust quantization and inverse quantization using illegal space
US7610198B2 (en) * 2001-08-16 2009-10-27 Broadcom Corporation Robust quantization with efficient WMSE search of a sign-shape codebook using illegal space
EP1383113A1 (de) * 2002-07-17 2004-01-21 STMicroelectronics N.V. Verfahren und Vorrichtung für Breitbandsprachkodierung geeignet zur Kontrolle von Kurzzeit- und Langzeitverzerrungen
EP1388846A3 (de) * 2002-07-17 2008-08-20 STMicroelectronics N.V. Verfahren und Vorrichtung zur Breitbandkodierung von Sprachsignalen geeignet zurunabhängigen Steuerung lang- und kurzzeitiger Verzerrungen
KR100463418B1 (ko) * 2002-11-11 2004-12-23 한국전자통신연구원 Ｃｅｌｐ 음성 부호화기에서 사용되는 가변적인 고정코드북 검색방법 및 장치
KR100503414B1 (ko) * 2002-11-14 2005-07-22 한국전자통신연구원 고정 코드북의 집중 검색 방법 및 장치
US7698132B2 (en) * 2002-12-17 2010-04-13 Qualcomm Incorporated Sub-sampled excitation waveform codebooks
WO2004084182A1 (en) * 2003-03-15 2004-09-30 Mindspeed Technologies, Inc. Decomposition of voiced speech for celp speech coding
US20050065787A1 (en) * 2003-09-23 2005-03-24 Jacek Stachurski Hybrid speech coding and system
US20050071154A1 (en) * 2003-09-30 2005-03-31 Walter Etter Method and apparatus for estimating noise in speech signals
FR2867649A1 (fr) * 2003-12-10 2005-09-16 France Telecom Procede de codage multiple optimise
US20050147131A1 (en) * 2003-12-29 2005-07-07 Nokia Corporation Low-rate in-band data channel using CELP codewords
KR100656788B1 (ko) * 2004-11-26 2006-12-12 한국전자통신연구원 비트율 신축성을 갖는 코드벡터 생성 방법 및 그를 이용한 광대역 보코더
US20060136202A1 (en) * 2004-12-16 2006-06-22 Texas Instruments, Inc. Quantization of excitation vector
DE102005000828A1 (de) * 2005-01-05 2006-07-13 Siemens Ag Verfahren zum Codieren eines analogen Signals
FR2884989A1 (fr) * 2005-04-26 2006-10-27 France Telecom Procede d'adaptation pour une interoperabilite entre modeles de correlation a court terme de signaux numeriques.
US8027242B2 (en) 2005-10-21 2011-09-27 Qualcomm Incorporated Signal coding and decoding based on spectral dynamics
US8392176B2 (en) 2006-04-10 2013-03-05 Qualcomm Incorporated Processing of excitation in audio coding and decoding
JPWO2007129726A1 (ja) * 2006-05-10 2009-09-17 パナソニック株式会社 音声符号化装置及び音声符号化方法
ES2366551T3 (es) * 2006-11-29 2011-10-21 Loquendo Spa Codificación y decodificación dependiente de una fuente de múltiples libros de códigos.
US8428957B2 (en) 2007-08-24 2013-04-23 Qualcomm Incorporated Spectral noise shaping in audio coding based on spectral dynamics in frequency sub-bands
US20090222268A1 (en) * 2008-03-03 2009-09-03 Qnx Software Systems (Wavemakers), Inc. Speech synthesis system having artificial excitation signal
KR20090122143A (ko) * 2008-05-23 2009-11-26 엘지전자 주식회사 오디오 신호 처리 방법 및 장치
GB2466674B (en) * 2009-01-06 2013-11-13 Skype Speech coding
GB2466673B (en) 2009-01-06 2012-11-07 Skype Quantization
GB2466672B (en) * 2009-01-06 2013-03-13 Skype Speech coding
GB2466669B (en) * 2009-01-06 2013-03-06 Skype Speech coding
GB2466675B (en) 2009-01-06 2013-03-06 Skype Speech coding
GB2466670B (en) * 2009-01-06 2012-11-14 Skype Speech encoding
GB2466671B (en) * 2009-01-06 2013-03-27 Skype Speech encoding
US8452606B2 (en) * 2009-09-29 2013-05-28 Skype Speech encoding using multiple bit rates
KR101525185B1 (ko) 2011-02-14 2015-06-02 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 트랜지언트 검출 및 품질 결과를 사용하여 일부분의 오디오 신호를 코딩하기 위한 장치 및 방법
CN103477387B (zh) 2011-02-14 2015-11-25 弗兰霍菲尔运输应用研究公司 使用频谱域噪声整形的基于线性预测的编码方案
BR112013020482B1 (pt) 2011-02-14 2021-02-23 Fraunhofer Ges Forschung aparelho e método para processar um sinal de áudio decodificado em um domínio espectral
MY166394A (en) 2011-02-14 2018-06-25 Fraunhofer Ges Forschung Information signal representation using lapped transform
KR101551046B1 (ko) 2011-02-14 2015-09-07 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법
PL2676264T3 (pl) 2011-02-14 2015-06-30 Fraunhofer Ges Forschung Koder audio estymujący szum tła podczas faz aktywnych
ES2639646T3 (es) * 2011-02-14 2017-10-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codificación y decodificación de posiciones de impulso de pistas de una señal de audio
ES2664090T3 (es) * 2011-03-10 2018-04-18 Telefonaktiebolaget Lm Ericsson (Publ) Relleno de subvectores no codificados en señales de audio codificadas por transformada

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
WO1992005541A1 (fr) * 1990-09-14 1992-04-02 Fujitsu Limited Systeme de codage de la parole
JPH06138896A (ja) 1991-05-31 1994-05-20 Motorola Inc 音声フレームを符号化するための装置および方法
DE69328450T2 (de) 1992-06-29 2001-01-18 Nippon Telegraph And Telephone Corp., Tokio/Tokyo Verfahren und Vorrichtung zur Sprachkodierung
CA2108623A1 (en) 1992-11-02 1994-05-03 Yi-Sheng Wang Adaptive pitch pulse enhancer and method for use in a codebook excited linear prediction (celp) search loop

Also Published As

Publication number Publication date
EP1105872A1 (de) 2001-06-13
WO2000011657A1 (en) 2000-03-02
DE69934320T2 (de) 2007-06-06
US6173257B1 (en) 2001-01-09
EP1105872B1 (de) 2006-12-06
HK1038422A1 (en) 2002-03-15
TW454169B (en) 2001-09-11

Similar Documents

Publication Publication Date Title
DE69934320D1 (de) Sprachkodierer und verfahren zur codebuch-suche
DE69840199D1 (de) Chirurgisches instrument und verfahren
DE69834401D1 (de) Businterfacesystem und verfahren
DE69837822D1 (de) Verfahren und Vorrichtung zur Dekodierung von Sprachsignalen
DE19983155T1 (de) Persönliches Identifikationssystem und Verfahren
DE69730930D1 (de) Verfahren und Gerät zur Zeichenerkennung
DE69834196D1 (de) Instrument und verfahren zur rettung der hirnfunktionen
DE69916255D1 (de) System und verfahren zur geräuschkompensierten spracherkennung
DE69814199D1 (de) Verfahren und System zur Eingabe von Zeichen
DE69929103D1 (de) Transpondersystem und Verfahren
DE60214946D1 (de) Verfahren und System zur Bereitstellung von Informationen
DE69816789D1 (de) Verfahren und system zur gestengesteuerten optionsauswahl
DE50006193D1 (de) Verfahren zur herstellung von otoplastiken und otoplastik
DE69732156D1 (de) Verfahren und Gerät zur Zeichenerkennung
DE60103218D1 (de) Zugagangspunkt und Verfahren zur Verbindungssteuerung
DE69833139D1 (de) Verfahren und Vorrichtung zur Routensuche
DE69823954D1 (de) Quellen-normalisierendes Training zur Sprachmodellierung
DE69720131D1 (de) System und Verfahren zur Perspektivetransformation
DE69717790D1 (de) Verfahren zur cdma codegenerierung und verfahren zur codeauswahl
DE69939124D1 (de) Spracherkenner und spracherkennungsverfahren
DE69824739D1 (de) Verfahren und gerät zur herstellung von wellpappe
DE69719477D1 (de) Vorrichtung und Verfahren zur Eingabe von Buchstaben
DE59904164D1 (de) Verfahren und anordnung zur sprachcodierung
DE19782204T1 (de) Verlängerungseinrichtung und Verfahren
DE69943234D1 (de) Vorrichtung und verfahren zur sprachdekodierung

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HTC CORP., TAOYUAN, TW

8328 Change in the person/name/address of the agent

Representative=s name: 2K PATENTANWAELTE BLASBERG KEWITZ & REICHEL, PARTN