AR021221A1 - Metodo de codificacion de prediccion lineal con analisis-por-sintesis y codificador. - Google Patents

Metodo de codificacion de prediccion lineal con analisis-por-sintesis y codificador.

Info

Publication number
AR021221A1
AR021221A1 ARP990104663A ARP990104663A AR021221A1 AR 021221 A1 AR021221 A1 AR 021221A1 AR P990104663 A ARP990104663 A AR P990104663A AR P990104663 A ARP990104663 A AR P990104663A AR 021221 A1 AR021221 A1 AR 021221A1
Authority
AR
Argentina
Prior art keywords
synthesis
linear prediction
analysis
gains
encoder
Prior art date
Application number
ARP990104663A
Other languages
English (en)
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20412633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR021221(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR021221A1 publication Critical patent/AR021221A1/es

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
    • 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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un método de codificacion de prediccion lineal con análisis-por-síntesis comprende las etapas de determinar las ganancias optimas de una pluralidadde subcuadros y actualizar los estados internos del codificador utilizando dichas gananciascuantificad as vectoriales. La invencion también proponeun codificador de prediccion lineal con análisis-por-síntesis que incluye un bloque de algoritmo de busqueda (50) y un cuantificador vectorial (58)para cuantificar vectorialmente las gananciasoptimas de un a pluralidad de subcuadros en un cuadro. Los estados del codificador interno se actualizanutilizando (50, 52, 54, 56) las ganancias cuantificadas vectorialmente y un método de codificacion.
ARP990104663A 1998-09-16 1999-09-16 Metodo de codificacion de prediccion lineal con analisis-por-sintesis y codificador. AR021221A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9803165A SE519563C2 (sv) 1998-09-16 1998-09-16 Förfarande och kodare för linjär prediktiv analys-genom- synteskodning

Publications (1)

Publication Number Publication Date
AR021221A1 true AR021221A1 (es) 2002-07-03

Family

ID=20412633

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990104663A AR021221A1 (es) 1998-09-16 1999-09-16 Metodo de codificacion de prediccion lineal con analisis-por-sintesis y codificador.

Country Status (15)

Country Link
US (1) US6732069B1 (es)
EP (1) EP1114415B1 (es)
JP (1) JP3893244B2 (es)
KR (1) KR100416363B1 (es)
CN (1) CN1132157C (es)
AR (1) AR021221A1 (es)
AU (1) AU756491B2 (es)
BR (1) BR9913715B1 (es)
CA (1) CA2344302C (es)
DE (1) DE69922388T2 (es)
MY (1) MY122181A (es)
SE (1) SE519563C2 (es)
TW (1) TW442776B (es)
WO (1) WO2000016315A2 (es)
ZA (1) ZA200101867B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8428957B2 (en) 2007-08-24 2013-04-23 Qualcomm Incorporated Spectral noise shaping in audio coding based on spectral dynamics in frequency sub-bands
JP5326465B2 (ja) 2008-09-26 2013-10-30 富士通株式会社 オーディオ復号方法、装置、及びプログラム
JP5309944B2 (ja) * 2008-12-11 2013-10-09 富士通株式会社 オーディオ復号装置、方法、及びプログラム
WO2012008891A1 (en) * 2010-07-16 2012-01-19 Telefonaktiebolaget L M Ericsson (Publ) Audio encoder and decoder and methods for encoding and decoding an audio signal
CN104025191A (zh) * 2011-10-18 2014-09-03 爱立信(中国)通信有限公司 用于自适应多速率编解码器的改进方法和设备
US20230336594A1 (en) * 2022-04-15 2023-10-19 Google Llc Videoconferencing with Reduced Quality Interruptions Upon Participant Join

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013112A1 (en) * 1989-04-25 1990-11-01 Kabushiki Kaisha Toshiba Voice encoder
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
SE469764B (sv) * 1992-01-27 1993-09-06 Ericsson Telefon Ab L M Saett att koda en samplad talsignalvektor
EP0751496B1 (en) * 1992-06-29 2000-04-19 Nippon Telegraph And Telephone Corporation Speech coding method and apparatus for the same
IT1257431B (it) * 1992-12-04 1996-01-16 Sip Procedimento e dispositivo per la quantizzazione dei guadagni dell'eccitazione in codificatori della voce basati su tecniche di analisi per sintesi
CA2118986C (en) * 1994-03-14 1998-09-22 Toshiki Miyano Speech coding system
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
SE504397C2 (sv) * 1995-05-03 1997-01-27 Ericsson Telefon Ab L M Metod för förstärkningskvantisering vid linjärprediktiv talkodning med kodboksexcitering
WO1996037964A1 (en) * 1995-05-22 1996-11-28 Ntt Mobile Communications Network Inc. Sound decoding device
EP0764939B1 (en) * 1995-09-19 2002-05-02 AT&T Corp. Synthesis of speech signals in the absence of coded parameters
KR100277096B1 (ko) * 1997-09-10 2001-01-15 윤종용 음성압축을 위한 코드워드와 양자화된 이득 선택방법
US6199037B1 (en) * 1997-12-04 2001-03-06 Digital Voice Systems, Inc. Joint quantization of speech subframe voicing metrics and fundamental frequencies
US6104992A (en) * 1998-08-24 2000-08-15 Conexant Systems, Inc. Adaptive gain reduction to produce fixed codebook target signal
US6260010B1 (en) * 1998-08-24 2001-07-10 Conexant Systems, Inc. Speech encoder using gain normalization that combines open and closed loop gains

Also Published As

Publication number Publication date
BR9913715A (pt) 2001-05-29
US6732069B1 (en) 2004-05-04
TW442776B (en) 2001-06-23
SE9803165L (sv) 2000-03-17
KR100416363B1 (ko) 2004-01-31
KR20010075134A (ko) 2001-08-09
JP3893244B2 (ja) 2007-03-14
SE9803165D0 (sv) 1998-09-16
DE69922388T2 (de) 2005-12-22
WO2000016315A2 (en) 2000-03-23
CN1132157C (zh) 2003-12-24
DE69922388D1 (de) 2005-01-05
CA2344302C (en) 2010-11-30
JP2002525897A (ja) 2002-08-13
SE519563C2 (sv) 2003-03-11
BR9913715B1 (pt) 2013-07-30
CA2344302A1 (en) 2000-03-23
CN1318190A (zh) 2001-10-17
AU756491B2 (en) 2003-01-16
WO2000016315A3 (en) 2000-05-25
EP1114415A2 (en) 2001-07-11
EP1114415B1 (en) 2004-12-01
MY122181A (en) 2006-03-31
ZA200101867B (en) 2001-09-13
AU6375799A (en) 2000-04-03

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