MX9705890A - Metodo y aparato de codificacion de la informacion digital. - Google Patents

Metodo y aparato de codificacion de la informacion digital.

Info

Publication number
MX9705890A
MX9705890A MX9705890A MX9705890A MX9705890A MX 9705890 A MX9705890 A MX 9705890A MX 9705890 A MX9705890 A MX 9705890A MX 9705890 A MX9705890 A MX 9705890A MX 9705890 A MX9705890 A MX 9705890A
Authority
MX
Mexico
Prior art keywords
speech
encoder
data
predictor
delay line
Prior art date
Application number
MX9705890A
Other languages
English (en)
Inventor
Rudi Hofmann
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of MX9705890A publication Critical patent/MX9705890A/es

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00—Speech synthesis; Text to speech systems
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L2019/0003—Backward prediction of gain

Abstract

Un codificador del habla (100) recibe señales de habla (S) que se codifican y se transmiten en un canal de comunicacion (120). El silencio en el habla se utiliza mediante el codificador de dato (101) para transmitir el dato en el banda de frecuencia del habla a través del canal (120). Un clasificador de señal (103) se conmuta entre los codificadores (100, 101). El codificador de habla tiene un filtro de síntesis (115) con variables de estado en una línea de retardo, el adaptador predictor (116), el predictor de ganancia (113, 114) y el libro de codigo de excitacion (112). El codificador de dato (101) tiene una línea de retardo con variables de eatado almacenadas y actualizadas en una memoria intermedia (192). Durante la conmutacion (103, 102, 193) desde el dato al habla, las variables de estado de la memoria intermedia se alimentan hacia la línea de retardo del filtro de síntesis a través de una entrada (144) para transicion uniforme en la codificacion del habla. Los valores coeficientes en el filtro de síntesis (115) y una señal de excitacion (ET(1...5)) se generan. De esta manera, se pregradua una memoria intermedia en le predictor de ganancia (113, 114) y sus coeficientes predictores y ganancia se generan. La señal de habla de entrada (S) recién detectada se codifica (CW) mediante los valores generados en el codificador de habla (100) que está adaptado sucesivamente. El lado del receptor tiene descodificadores de habla y dato correspondientes.
MX9705890A 1995-02-08 1996-02-02 Metodo y aparato de codificacion de la informacion digital. MX9705890A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9500452A SE504010C2 (sv) 1995-02-08 1995-02-08 Förfarande och anordning för prediktiv kodning av tal- och datasignaler
PCT/SE1996/000128 WO1996024926A2 (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information

Publications (1)

Publication Number Publication Date
MX9705890A true MX9705890A (es) 1997-10-31

Family

ID=20397130

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9705890A MX9705890A (es) 1995-02-08 1996-02-02 Metodo y aparato de codificacion de la informacion digital.

Country Status (13)

Country Link
US (1) US6012024A (es)
EP (1) EP0976126B1 (es)
JP (1) JP4111538B2 (es)
KR (1) KR100383051B1 (es)
CN (1) CN1110791C (es)
AU (1) AU720430B2 (es)
BR (1) BR9607033A (es)
CA (1) CA2211347C (es)
DE (1) DE69633944T2 (es)
FI (1) FI117949B (es)
MX (1) MX9705890A (es)
SE (1) SE504010C2 (es)
WO (1) WO1996024926A2 (es)

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KR101261677B1 (ko) * 2008-07-14 2013-05-06 광운대학교 산학협력단 음성/음악 통합 신호의 부호화/복호화 장치
JP4977157B2 (ja) * 2009-03-06 2012-07-18 株式会社エヌ・ティ・ティ・ドコモ 音信号符号化方法、音信号復号方法、符号化装置、復号装置、音信号処理システム、音信号符号化プログラム、及び、音信号復号プログラム
JP6132288B2 (ja) * 2014-03-14 2017-05-24 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ 生成装置、選択装置、生成方法、選択方法、及び、プログラム
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Also Published As

Publication number Publication date
AU720430B2 (en) 2000-06-01
SE504010C2 (sv) 1996-10-14
KR100383051B1 (ko) 2003-07-16
EP0976126B1 (en) 2004-11-24
US6012024A (en) 2000-01-04
WO1996024926A3 (en) 1996-10-03
FI973270A (fi) 1997-08-08
CA2211347A1 (en) 1996-08-15
FI973270A0 (fi) 1997-08-08
DE69633944D1 (de) 2004-12-30
WO1996024926A2 (en) 1996-08-15
SE9500452D0 (sv) 1995-02-08
JP4111538B2 (ja) 2008-07-02
JPH10513277A (ja) 1998-12-15
SE9500452L (sv) 1996-08-09
DE69633944T2 (de) 2005-12-08
CN1179848A (zh) 1998-04-22
FI117949B (fi) 2007-04-30
CA2211347C (en) 2007-04-24
BR9607033A (pt) 1997-11-04
CN1110791C (zh) 2003-06-04
KR19980702044A (ko) 1998-07-15
AU4682396A (en) 1996-08-27
EP0976126A2 (en) 2000-02-02

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