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MX9602144A - Atenuacion de ganancia del codigo cifrado durante borrado de cuadros. - Google Patents

Atenuacion de ganancia del codigo cifrado durante borrado de cuadros.

Info

Publication number
MX9602144A
MX9602144A MX9602144A MX9602144A MX9602144A MX 9602144 A MX9602144 A MX 9602144A MX 9602144 A MX9602144 A MX 9602144A MX 9602144 A MX9602144 A MX 9602144A MX 9602144 A MX9602144 A MX 9602144A
Authority
MX
Mexico
Prior art keywords
speech
codebook
frame
attenuated
scale
Prior art date
Application number
MX9602144A
Other languages
English (en)
Inventor
Yair Shoham
Original Assignee
At & T Corp
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=23928093&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX9602144(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by At & T Corp filed Critical At & T Corp
Publication of MX9602144A publication Critical patent/MX9602144A/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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

Se proporciona un descodificador del habla, basado en un codigo cifrado, el cual falla en recibir de manera confiable por lo menos una porcion de un cuadro actual de informacion de habla comprimida, que utiliza una ganancia de codigo cifrado la cual es una version atenuada de una ganancia de un cuadro previo de habla. El descodificador de habla incluye una memoria de codigo cifrado y un amplificador de señal. La memoria y el amplificador se utilizan para generar una señal de habla descodificada, en base a la informacion de habla comprimida. La informacion de habla comprimida incluye un factor de escala para uso por el amplificador al hacer un ajuste a escala del vector de codigo cifrado. Cuando se presenta un borrado de cuadro, un factor de escala que corresponde a un cuadro previo de habla se atenua, y el factor de escala atenuado se utiliza para amplificar el vector de codigo cifrado correspondiente al cuadro de habla borrado en ese momento.
MX9602144A 1995-06-07 1996-06-04 Atenuacion de ganancia del codigo cifrado durante borrado de cuadros. MX9602144A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48542095A 1995-06-07 1995-06-07

Publications (1)

Publication Number Publication Date
MX9602144A true MX9602144A (es) 1997-09-30

Family

ID=23928093

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9602144A MX9602144A (es) 1995-06-07 1996-06-04 Atenuacion de ganancia del codigo cifrado durante borrado de cuadros.

Country Status (8)

Country Link
EP (1) EP0747884B1 (es)
JP (1) JPH09120297A (es)
KR (1) KR970004469A (es)
AU (1) AU5463796A (es)
CA (1) CA2177413A1 (es)
DE (1) DE69622646T2 (es)
ES (1) ES2177729T3 (es)
MX (1) MX9602144A (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI113571B (fi) * 1998-03-09 2004-05-14 Nokia Corp Puheenkoodaus
US6636829B1 (en) * 1999-09-22 2003-10-21 Mindspeed Technologies, Inc. Speech communication system and method for handling lost frames
AU1922901A (en) * 1999-11-19 2001-05-30 Siemens Information And Communication Mobile Llc System and method for wireless communication incorporating error concealment
FR2813722B1 (fr) 2000-09-05 2003-01-24 France Telecom Procede et dispositif de dissimulation d'erreurs et systeme de transmission comportant un tel dispositif
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
JP4419748B2 (ja) * 2004-08-12 2010-02-24 沖電気工業株式会社 消失補償装置、消失補償方法、および消失補償プログラム
EP2538405B1 (en) * 2006-11-10 2015-07-08 Panasonic Intellectual Property Corporation of America CELP-coded speech parameter decoding method and apparatus
EP2233288A1 (en) 2009-03-23 2010-09-29 Founder Fine Chemical Industry Co., Ltd. Radiation sensitive composition and method for preparing radiation sensitive composition
JP5894286B2 (ja) * 2011-10-20 2016-03-23 エルジー エレクトロニクス インコーポレイティド ジッタバッファの管理方法及びこれを利用するジッタバッファ
US9449607B2 (en) * 2012-01-06 2016-09-20 Qualcomm Incorporated Systems and methods for detecting overflow
EP2980797A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder, method and computer program using a zero-input-response to obtain a smooth transition
WO2017005296A1 (en) * 2015-07-06 2017-01-12 Nokia Technologies Oy Bit error detector for an audio signal decoder
RU2711108C1 (ru) * 2016-03-07 2020-01-15 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Блок маскирования ошибок, аудиодекодер и соответствующие способ и компьютерная программа, подвергающие затуханию замаскированный аудиокадр согласно разным коэффициентам затухания для разных полос частот
KR102192999B1 (ko) * 2016-03-07 2020-12-18 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 적절히 디코딩된 오디오 프레임의 디코딩된 표현의 특성을 사용하는 에러 은닉 유닛, 오디오 디코더, 및 관련 방법과 컴퓨터 프로그램

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3102015B2 (ja) * 1990-05-28 2000-10-23 日本電気株式会社 音声復号化方法
US5383202A (en) * 1992-11-25 1995-01-17 Motorola, Inc. Simplified method of attenuation of logarithmically coded digital signals
US5450449A (en) * 1994-03-14 1995-09-12 At&T Ipm Corp. Linear prediction coefficient generation during frame erasure or packet loss

Also Published As

Publication number Publication date
EP0747884A2 (en) 1996-12-11
KR970004469A (ko) 1997-01-29
AU5463796A (en) 1996-12-19
CA2177413A1 (en) 1996-12-08
ES2177729T3 (es) 2002-12-16
EP0747884B1 (en) 2002-07-31
DE69622646T2 (de) 2003-03-13
JPH09120297A (ja) 1997-05-06
EP0747884A3 (en) 1997-09-10
DE69622646D1 (de) 2002-09-05

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