WO1996024926A3 - Method and apparatus in coding digital information - Google Patents

Method and apparatus in coding digital information Download PDF

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Publication number
WO1996024926A3
WO1996024926A3 PCT/SE1996/000128 SE9600128W WO9624926A3 WO 1996024926 A3 WO1996024926 A3 WO 1996024926A3 SE 9600128 W SE9600128 W SE 9600128W WO 9624926 A3 WO9624926 A3 WO 9624926A3
Authority
WO
WIPO (PCT)
Prior art keywords
speech
encoder
data
predictor
delay line
Prior art date
Application number
PCT/SE1996/000128
Other languages
French (fr)
Other versions
WO1996024926A2 (en
Inventor
Rudi Hofmann
Original Assignee
Ericsson Telefon Ab L M
Rudi Hofmann
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, Rudi Hofmann filed Critical Ericsson Telefon Ab L M
Priority to CA002211347A priority Critical patent/CA2211347C/en
Priority to US08/875,730 priority patent/US6012024A/en
Priority to AU46823/96A priority patent/AU720430B2/en
Priority to DE69633944T priority patent/DE69633944T2/en
Priority to JP52419196A priority patent/JP4111538B2/en
Priority to MX9705890A priority patent/MX9705890A/en
Priority to EP96902559A priority patent/EP0976126B1/en
Priority to BR9607033A priority patent/BR9607033A/en
Publication of WO1996024926A2 publication Critical patent/WO1996024926A2/en
Publication of WO1996024926A3 publication Critical patent/WO1996024926A3/en
Priority to FI973270A priority patent/FI117949B/en

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

A speech encoder (100) receives speech signals (S) which are encoded and transmitted on a communication channel (120). Silence in the speech is utilized by a data encoder (101) to transmit data on the speech frequency band via the channel (120). A signal classifier (103) switches between the encoders (100, 101). The speech encoder has synthesis filter (115) with state variables in a delay line, predictor adaptor (116), gain predictor (113, 114) and excitation codebook (112). The data encoder (101) has delay line with state variables stored and updated in a buffer (192). On switching (103, 102, 193) from data to speech, the buffer state variables are fed into the synthesis filter delay line via an input (144) for smooth transition in the speech encoding. Coefficient values in the synthesis filter (115) and an excitation signal (ET(1...5)) are generated. Thereby a buffer in the gain predictor (113, 114) is preset and its predictor coefficients and gain are generated. The incoming speech signal (S) newly detected is encoded (CW) by the values generated in the speech encoder (100), which is successively adapted. The receiver side has corresponding speech and data decoders.
PCT/SE1996/000128 1995-02-08 1996-02-02 Method and apparatus in coding digital information WO1996024926A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA002211347A CA2211347C (en) 1995-02-08 1996-02-02 An encoding method and apparatus using a control circuit switching between two backward adaptive encoders for transmission
US08/875,730 US6012024A (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information
AU46823/96A AU720430B2 (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information
DE69633944T DE69633944T2 (en) 1995-02-08 1996-02-02 METHOD AND DEVICE FOR CODING DIGITAL DATA
JP52419196A JP4111538B2 (en) 1995-02-08 1996-02-02 Digital information coding method and apparatus
MX9705890A MX9705890A (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information.
EP96902559A EP0976126B1 (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information
BR9607033A BR9607033A (en) 1995-02-08 1996-02-02 Process and apparatus in a transmission system for transmitting signals and receiving signals transmitted through a communication channel
FI973270A FI117949B (en) 1995-02-08 1997-08-08 Method and device for encoding digital data

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9500452A SE504010C2 (en) 1995-02-08 1995-02-08 Method and apparatus for predictive coding of speech and data signals
SE9500452-9 1995-02-08

Publications (2)

Publication Number Publication Date
WO1996024926A2 WO1996024926A2 (en) 1996-08-15
WO1996024926A3 true WO1996024926A3 (en) 1996-10-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1996/000128 WO1996024926A2 (en) 1995-02-08 1996-02-02 Method and apparatus in coding digital information

Country Status (13)

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

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JP3881157B2 (en) * 2000-05-23 2007-02-14 株式会社エヌ・ティ・ティ・ドコモ Voice processing method and voice processing apparatus
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AU2002215274A1 (en) * 2000-11-21 2002-06-03 Telefonaktiebolaget Lm Ericsson (Publ) A portable communication device and a method for conference calls
US7855966B2 (en) * 2001-07-16 2010-12-21 International Business Machines Corporation Network congestion detection and automatic fallback: methods, systems and program products
US7068601B2 (en) * 2001-07-16 2006-06-27 International Business Machines Corporation Codec with network congestion detection and automatic fallback: methods, systems & program products
KR100794424B1 (en) * 2001-11-01 2008-01-16 엘지노텔 주식회사 Audio packet switching system and method
US20030101407A1 (en) * 2001-11-09 2003-05-29 Cute Ltd. Selectable complexity turbo coding system
US7206740B2 (en) * 2002-01-04 2007-04-17 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
US7054807B2 (en) * 2002-11-08 2006-05-30 Motorola, Inc. Optimizing encoder for efficiently determining analysis-by-synthesis codebook-related parameters
US7263481B2 (en) * 2003-01-09 2007-08-28 Dilithium Networks Pty Limited Method and apparatus for improved quality voice transcoding
US7996234B2 (en) * 2003-08-26 2011-08-09 Akikaze Technologies, Llc Method and apparatus for adaptive variable bit rate audio encoding
JP2005202262A (en) * 2004-01-19 2005-07-28 Matsushita Electric Ind Co Ltd Audio signal encoding method, audio signal decoding method, transmitter, receiver, and wireless microphone system
CN100592389C (en) 2008-01-18 2010-02-24 华为技术有限公司 State updating method and apparatus of synthetic filter
US7177804B2 (en) * 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US8352254B2 (en) * 2005-12-09 2013-01-08 Panasonic Corporation Fixed code book search device and fixed code book search method
EP1991986B1 (en) * 2006-03-07 2019-07-31 Telefonaktiebolaget LM Ericsson (publ) Methods and arrangements for audio coding
CN101145345B (en) * 2006-09-13 2011-02-09 华为技术有限公司 Audio frequency classification method
KR20100006492A (en) * 2008-07-09 2010-01-19 삼성전자주식회사 Method and apparatus for deciding encoding mode
KR101261677B1 (en) * 2008-07-14 2013-05-06 광운대학교 산학협력단 Apparatus for encoding and decoding of integrated voice and music
JP4977157B2 (en) * 2009-03-06 2012-07-18 株式会社エヌ・ティ・ティ・ドコモ Sound signal encoding method, sound signal decoding method, encoding device, decoding device, sound signal processing system, sound signal encoding program, and sound signal decoding program
JP6132288B2 (en) * 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 Generation device, selection device, generation method, selection method, and program
US9685164B2 (en) * 2014-03-31 2017-06-20 Qualcomm Incorporated Systems and methods of switching coding technologies at a device
RU2643434C2 (en) * 2014-09-12 2018-02-01 Общество С Ограниченной Ответственностью "Яндекс" Method for providing message to user through computing device and machine readable medium

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US5313554A (en) * 1992-06-16 1994-05-17 At&T Bell Laboratories Backward gain adaptation method in code excited linear prediction coders
US5339384A (en) * 1992-02-18 1994-08-16 At&T Bell Laboratories Code-excited linear predictive coding with low delay for speech or audio signals

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Also Published As

Publication number Publication date
JP4111538B2 (en) 2008-07-02
DE69633944T2 (en) 2005-12-08
JPH10513277A (en) 1998-12-15
US6012024A (en) 2000-01-04
DE69633944D1 (en) 2004-12-30
CN1110791C (en) 2003-06-04
EP0976126B1 (en) 2004-11-24
KR100383051B1 (en) 2003-07-16
CN1179848A (en) 1998-04-22
FI973270A (en) 1997-08-08
BR9607033A (en) 1997-11-04
AU720430B2 (en) 2000-06-01
SE9500452D0 (en) 1995-02-08
CA2211347A1 (en) 1996-08-15
WO1996024926A2 (en) 1996-08-15
FI117949B (en) 2007-04-30
SE9500452L (en) 1996-08-09
SE504010C2 (en) 1996-10-14
EP0976126A2 (en) 2000-02-02
FI973270A0 (en) 1997-08-08
AU4682396A (en) 1996-08-27
KR19980702044A (en) 1998-07-15
CA2211347C (en) 2007-04-24
MX9705890A (en) 1997-10-31

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