KR970024627A - 음성부호화방법 및 장치 - Google Patents

음성부호화방법 및 장치 Download PDF

Info

Publication number
KR970024627A
KR970024627A KR1019960047282A KR19960047282A KR970024627A KR 970024627 A KR970024627 A KR 970024627A KR 1019960047282 A KR1019960047282 A KR 1019960047282A KR 19960047282 A KR19960047282 A KR 19960047282A KR 970024627 A KR970024627 A KR 970024627A
Authority
KR
South Korea
Prior art keywords
codebook
vector
encoding
clipping
gaussian noise
Prior art date
Application number
KR1019960047282A
Other languages
English (en)
Other versions
KR100427752B1 (ko
Inventor
가쯔유끼 이지마
마사유끼 니시구찌
준 마츠모또
시로 오모리
Original Assignee
이데이 노브유끼
소니 가부시끼가이샤
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 이데이 노브유끼, 소니 가부시끼가이샤 filed Critical 이데이 노브유끼
Publication of KR970024627A publication Critical patent/KR970024627A/ko
Application granted granted Critical
Publication of KR100427752B1 publication Critical patent/KR100427752B1/ko

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
    • G10L19/04—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
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

입력음성신호를 블록을 기초로 분할하여 그 결과의 블록이 단위가 되는 식으로 부호화하는 부호화장치이다. 본 부호화장치는 잡음코드북(121)을 기지고서 CELP부호화를 행하는 부호화부(120)를 포함하며, 상기 가우스잡음을 클립핑하여 생성되는 코드벡터와 가우스잡음을 클립핑함으로써 생성되는 코드북벡터를 초기값으로 이용하여 학습함으로써 얻어지는 코드북벡터로 이루어져 있다. 본 부호화장치는 다양한 음성형태에 대해 최적의 부회화를 행할 수 있다.

Description

음성부호화방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
도1은 본 발명을 따르는 부호화방법을 수행하기 위한 음성신호 부호화방법 및 음성신호 부호화장치(엔코더)의 기본구조를 나타내는 블록도이다.

Claims (5)

  1. 시간축상의 입력음성신호를 단위로써 블록으로 분할하여 그 결과의 신호를 부호화하는 음성부호화방법에 있어서, 분석/합성을 이용하여 최적의 벡터에 대한 시간영역 폐루프탐색으로 벡터양자화하는 부호화단계를 포함하며, 상기 벡터양자화용 코드북으로써 복수의 임계값에서 가우스잡음을 클립핑함으로써 생성되는 코드북을 사용하는 것을 특징으로 하는 음성부호화방법.
  2. 1항에 있어서, 상기 벡터양자화용 코드북은 상기 가우스잡음을 클립핑함으로써 생성되는 코드벡터와 가우스잡음을 클립핑하여 얻어진 코드북벡터를 초기값으로 사용하여 학습함으로써 얻어지는 코드북벡터로 이루어지는 것을 특징으로 하는 음성부호화방법.
  3. 시간축상의 입력음성신호를 단위로써 블록으로 분할하여 그 결과의 신호를 부호화하는 음성부호화장치에 있어서, 분석/합성을 이용하여 최적의 벡터에 대한 시간영역 폐루프탐색으로 벡터양자화하는 부호화수단을 포함하며, 상기 벡터양자화용 코드북으로써 복수의 임계값에서 가우스잡음을 클립핑함으로써 생성되는 코드북을 사용하는 것을 특징으로 하는 음성부호화장치.
  4. 3항에 있어서, 상기 벡터양자화용 코드북은 상기 가우스잡음을 클립핑함으로써 생성되는 코드벡터와, 가우스잡음을 클립핑하여 얻어진 코드북벡터를 초기값으로 사용하여 학습함으로써 얻어지는 코드북벡터로 이루어지는 것을 특징으로 하는 음성부호화장치.
  5. 입력음성신호를 증폭하기 위한 증폭수단과, 증폭된 결과의 신호를 A/D변환하기 위한 A/D변환수단과, 상기 부호화된 신호를 채널복호화하기 위한 송신경로 부호화수단과, 상기 D/A변환수단으로부터의 신호를 증폭하여 그 증폭신호를 안테나로 인가하기 위한 변조수단과, 를 포함하며, 상기 음성부호화수단은 분석/합성방법을 사용하여 최적의 벡터에 대한 시간영역 폐루프탐색을 벡터양자화하기 위한 부호화수단을 더 포함하며, 상기 벡터양자화를 위한 코드북으로써 복수의 임계값에서 가우스잡음을 클립핑하여 생성되는 코드북을 사용하는 것을 특징으로 하는 휴대용 무단말장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960047282A 1995-10-26 1996-10-21 음성부호화방법 및 장치 KR100427752B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP27941795A JP3680380B2 (ja) 1995-10-26 1995-10-26 音声符号化方法及び装置
JP95-279417 1995-10-26

Publications (2)

Publication Number Publication Date
KR970024627A true KR970024627A (ko) 1997-05-30
KR100427752B1 KR100427752B1 (ko) 2004-07-19

Family

ID=17610804

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960047282A KR100427752B1 (ko) 1995-10-26 1996-10-21 음성부호화방법 및 장치

Country Status (8)

Country Link
US (1) US5828996A (ko)
EP (1) EP0770989B1 (ko)
JP (1) JP3680380B2 (ko)
KR (1) KR100427752B1 (ko)
CN (1) CN1156872A (ko)
AT (1) ATE213086T1 (ko)
DE (1) DE69619054T2 (ko)
SG (1) SG43428A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100492965B1 (ko) * 2002-09-27 2005-06-07 삼성전자주식회사 벡터 양자화를 위한 고속 탐색방법
KR100886062B1 (ko) * 1997-10-22 2009-02-26 파나소닉 주식회사 확산 펄스 벡터 생성 장치 및 방법

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729246A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
FR2729247A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
JP4040126B2 (ja) * 1996-09-20 2008-01-30 ソニー株式会社 音声復号化方法および装置
JP3707153B2 (ja) 1996-09-24 2005-10-19 ソニー株式会社 ベクトル量子化方法、音声符号化方法及び装置
JP3849210B2 (ja) * 1996-09-24 2006-11-22 ヤマハ株式会社 音声符号化復号方式
JPH10105195A (ja) * 1996-09-27 1998-04-24 Sony Corp ピッチ検出方法、音声信号符号化方法および装置
US6064954A (en) * 1997-04-03 2000-05-16 International Business Machines Corp. Digital audio signal coding
WO1999003097A2 (en) * 1997-07-11 1999-01-21 Koninklijke Philips Electronics N.V. Transmitter with an improved speech encoder and decoder
JP3235526B2 (ja) * 1997-08-08 2001-12-04 日本電気株式会社 音声圧縮伸長方法及びその装置
TW408298B (en) * 1997-08-28 2000-10-11 Texas Instruments Inc Improved method for switched-predictive quantization
WO1999034354A1 (en) 1997-12-24 1999-07-08 Mitsubishi Denki Kabushiki Kaisha Sound encoding method and sound decoding method, and sound encoding device and sound decoding device
US6954727B1 (en) * 1999-05-28 2005-10-11 Koninklijke Philips Electronics N.V. Reducing artifact generation in a vocoder
JP4218134B2 (ja) * 1999-06-17 2009-02-04 ソニー株式会社 復号装置及び方法、並びにプログラム提供媒体
US6393394B1 (en) * 1999-07-19 2002-05-21 Qualcomm Incorporated Method and apparatus for interleaving line spectral information quantization methods in a speech coder
US7010482B2 (en) * 2000-03-17 2006-03-07 The Regents Of The University Of California REW parametric vector quantization and dual-predictive SEW vector quantization for waveform interpolative coding
US6901362B1 (en) 2000-04-19 2005-05-31 Microsoft Corporation Audio segmentation and classification
US7386444B2 (en) * 2000-09-22 2008-06-10 Texas Instruments Incorporated Hybrid speech coding and system
US7171355B1 (en) * 2000-10-25 2007-01-30 Broadcom Corporation Method and apparatus for one-stage and two-stage noise feedback coding of speech and audio signals
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
US7110942B2 (en) * 2001-08-14 2006-09-19 Broadcom Corporation Efficient excitation quantization in a noise feedback coding system using correlation techniques
US7512535B2 (en) * 2001-10-03 2009-03-31 Broadcom Corporation Adaptive postfiltering methods and systems for decoding speech
US7206740B2 (en) * 2002-01-04 2007-04-17 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
US8473286B2 (en) * 2004-02-26 2013-06-25 Broadcom Corporation Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure
JP4529492B2 (ja) * 2004-03-11 2010-08-25 株式会社デンソー 音声抽出方法、音声抽出装置、音声認識装置、及び、プログラム
US8335684B2 (en) * 2006-07-12 2012-12-18 Broadcom Corporation Interchangeable noise feedback coding and code excited linear prediction encoders
JP4827661B2 (ja) * 2006-08-30 2011-11-30 富士通株式会社 信号処理方法及び装置
US8532983B2 (en) * 2008-09-06 2013-09-10 Huawei Technologies Co., Ltd. Adaptive frequency prediction for encoding or decoding an audio signal
WO2010028299A1 (en) * 2008-09-06 2010-03-11 Huawei Technologies Co., Ltd. Noise-feedback for spectral envelope quantization
US8515747B2 (en) * 2008-09-06 2013-08-20 Huawei Technologies Co., Ltd. Spectrum harmonic/noise sharpness control
US8532998B2 (en) * 2008-09-06 2013-09-10 Huawei Technologies Co., Ltd. Selective bandwidth extension for encoding/decoding audio/speech signal
WO2010031003A1 (en) 2008-09-15 2010-03-18 Huawei Technologies Co., Ltd. Adding second enhancement layer to celp based core layer
WO2010031049A1 (en) * 2008-09-15 2010-03-18 GH Innovation, Inc. Improving celp post-processing for music signals
JP6844472B2 (ja) * 2017-08-24 2021-03-17 トヨタ自動車株式会社 情報処理装置
CN111341330B (zh) * 2020-02-10 2023-07-25 科大讯飞股份有限公司 音频编解码方法、存取方法及其相关设备及存储装置

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052568A (en) * 1976-04-23 1977-10-04 Communications Satellite Corporation Digital voice switch
US4545065A (en) * 1982-04-28 1985-10-01 Xsi General Partnership Extrema coding signal processing method and apparatus
US4802221A (en) * 1986-07-21 1989-01-31 Ncr Corporation Digital system and method for compressing speech signals for storage and transmission
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US5261027A (en) * 1989-06-28 1993-11-09 Fujitsu Limited Code excited linear prediction speech coding system
US5263119A (en) * 1989-06-29 1993-11-16 Fujitsu Limited Gain-shape vector quantization method and apparatus
JPH0365822A (ja) * 1989-08-04 1991-03-20 Fujitsu Ltd ベクトル量子化符号器及びベクトル量子化復号器
CA2027705C (en) * 1989-10-17 1994-02-15 Masami Akamine Speech coding system utilizing a recursive computation technique for improvement in processing speed
US5307441A (en) * 1989-11-29 1994-04-26 Comsat Corporation Wear-toll quality 4.8 kbps speech codec
JPH0418800A (ja) * 1990-05-14 1992-01-22 Hitachi Ltd 集積回路の３次元実装方法
EP0500961B1 (en) * 1990-09-14 1998-04-29 Fujitsu Limited Voice coding system
JPH0782355B2 (ja) * 1991-02-22 1995-09-06 株式会社エイ・ティ・アール自動翻訳電話研究所 雑音除去と話者適応の機能を有する音声認識装置
US5271088A (en) * 1991-05-13 1993-12-14 Itt Corporation Automated sorting of voice messages through speaker spotting
JP2613503B2 (ja) * 1991-07-08 1997-05-28 日本電信電話株式会社 音声の励振信号符号化・復号化方法
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
BR9206143A (pt) * 1991-06-11 1995-01-03 Qualcomm Inc Processos de compressão de final vocal e para codificação de taxa variável de quadros de entrada, aparelho para comprimir im sinal acústico em dados de taxa variável, codificador de prognóstico exitado por córdigo de taxa variável (CELP) e descodificador para descodificar quadros codificados
JP3129778B2 (ja) * 1991-08-30 2001-01-31 富士通株式会社 ベクトル量子化器
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
JP3212123B2 (ja) * 1992-03-31 2001-09-25 株式会社東芝 音声符号化装置
JP3278900B2 (ja) * 1992-05-07 2002-04-30 ソニー株式会社 データ符号化装置及び方法
FI95085C (fi) * 1992-05-11 1995-12-11 Nokia Mobile Phones Ltd Menetelmä puhesignaalin digitaaliseksi koodaamiseksi sekä puhekooderi menetelmän suorittamiseksi
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec
IT1257065B (it) * 1992-07-31 1996-01-05 Sip Codificatore a basso ritardo per segnali audio, utilizzante tecniche di analisi per sintesi.
EP0624965A3 (en) * 1993-03-23 1996-01-31 Us West Advanced Tech Inc Method and system for searching an on-line phone book in a phone station.
US5491771A (en) * 1993-03-26 1996-02-13 Hughes Aircraft Company Real-time implementation of a 8Kbps CELP coder on a DSP pair
AU668817B2 (en) * 1993-03-26 1996-05-16 Blackberry Limited Vector quantizer method and apparatus
US5533133A (en) * 1993-03-26 1996-07-02 Hughes Aircraft Company Noise suppression in digital voice communications systems
JP3265726B2 (ja) * 1993-07-22 2002-03-18 松下電器産業株式会社 可変レート音声符号化装置
US5651090A (en) * 1994-05-06 1997-07-22 Nippon Telegraph And Telephone Corporation Coding method and coder for coding input signals of plural channels using vector quantization, and decoding method and decoder therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100886062B1 (ko) * 1997-10-22 2009-02-26 파나소닉 주식회사 확산 펄스 벡터 생성 장치 및 방법
KR100492965B1 (ko) * 2002-09-27 2005-06-07 삼성전자주식회사 벡터 양자화를 위한 고속 탐색방법

Also Published As

Publication number Publication date
US5828996A (en) 1998-10-27
KR100427752B1 (ko) 2004-07-19
DE69619054T2 (de) 2002-08-29
JP3680380B2 (ja) 2005-08-10
ATE213086T1 (de) 2002-02-15
JPH09127990A (ja) 1997-05-16
CN1156872A (zh) 1997-08-13
EP0770989B1 (en) 2002-02-06
SG43428A1 (en) 1997-10-17
EP0770989A3 (en) 1998-10-21
DE69619054D1 (de) 2002-03-21
EP0770989A2 (en) 1997-05-02

Similar Documents

Publication Publication Date Title
KR970024627A (ko) 음성부호화방법 및 장치
KR970022701A (ko) 음성부호화방법 및 장치
RU2144261C1 (ru) Передающая система на принципах различного кодирования
KR970024628A (ko) 음성부호화방법 및 장치와 음성복호화방법 및 장치
KR100373614B1 (ko) 음성 부호화 방법 및 음성 복호화 방법 및, 음성 부호화장치 및 음성 복호화 장치
KR970024629A (ko) 신호부호화방법 및 장치
KR970701410A (ko) 음성 부호화 방법(Sound Encoding System)
ATE302991T1 (de) Verfahren zur signalgesteuerten schaltung zwischen verschiedenen audiokodierungssystemen
KR100452955B1 (ko) 음성부호화방법, 음성복호화방법, 음성부호화장치, 음성복호화장치, 전화장치, 피치변환방법 및 매체
BR9602835B1 (pt) processo e aparelho para reproduzir um sinal de voz, e, processo para transmitir o mesmo.
KR960015379A (ko) 음성부호화장치, 음성복호화장치, 음성부호화복호화방법 및 이들의 실시에 사용가능한 위상진폭특성도출장치
ATE202232T1 (de) Verfahren zur sprachkodierung
KR950035273A (ko) 선형 예측에 근거한 분석 및 합성 코더를 위한 말하는 속도 변조
PL1825461T3 (pl) Sposób i urządzenie do sztucznego rozszerzania szerokości pasma sygnałów mowy
DE69013738D1 (de) Einrichtung zur Sprachcodierung.
BR0208635A (pt) Método e aparelho para quantificar os valores do parâmetro espectral no codificador de voz, codificador de voz para fornecer ao decodificador um fluxo de bit, e, estação móvel capaz de receber e pré-processar o sinal de voz de entrada
KR970076487A (ko) 음성 부호화 장치 및 음성 부호화 복호화 장치
KR980006936A (ko) 낮은 비트 전송 속도 코딩을 위한 적응 필터 및 필터링 방법
RU2007137565A (ru) Преобразование голоса
JP2002328699A (ja) 符号化装置および復号化装置
DE69703233D1 (de) Verfahren und Systeme zur Sprachkodierung
DE60027140D1 (de) Sprachsynthetisierer auf der basis von sprachkodierung mit veränderlicher bit-rate
KR20080095491A (ko) 오디오/스피치 신호 부호화 및 복호화 방법 및 장치
EP1355298A3 (en) Code Excitation linear prediction encoder and decoder
TH28602B (th) เครื่องสำเร็จและระเบียบวิธีการเข้ารหัสเสียงพูด

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120402

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee