ATE555471T1 - Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate - Google Patents

Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate

Info

Publication number
ATE555471T1
ATE555471T1 AT01995389T AT01995389T ATE555471T1 AT E555471 T1 ATE555471 T1 AT E555471T1 AT 01995389 T AT01995389 T AT 01995389T AT 01995389 T AT01995389 T AT 01995389T AT E555471 T1 ATE555471 T1 AT E555471T1
Authority
AT
Austria
Prior art keywords
high frequency
frequency noise
pulse excitation
low bitrate
injection high
Prior art date
Application number
AT01995389T
Other languages
English (en)
Inventor
Yang Gao
Original Assignee
Mindspeed Tech Inc
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 Mindspeed Tech Inc filed Critical Mindspeed Tech Inc
Application granted granted Critical
Publication of ATE555471T1 publication Critical patent/ATE555471T1/de

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
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • G10L2019/0005—Multi-stage vector quantisation
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Manipulation Of Pulses (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)
AT01995389T 2001-01-05 2001-12-10 Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate ATE555471T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/755,441 US6529867B2 (en) 2000-09-15 2001-01-05 Injecting high frequency noise into pulse excitation for low bit rate CELP
PCT/US2001/046778 WO2002054380A2 (en) 2001-01-05 2001-12-10 Injection high frequency noise into pulse excitation for low bit rate celp

Publications (1)

Publication Number Publication Date
ATE555471T1 true ATE555471T1 (de) 2012-05-15

Family

ID=25039175

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01995389T ATE555471T1 (de) 2001-01-05 2001-12-10 Injektions-hochfrequenzrauschen in impulserregung für celp mit niedriger bitrate

Country Status (7)

Country Link
US (1) US6529867B2 (de)
EP (2) EP1892701A1 (de)
KR (1) KR100540707B1 (de)
CN (2) CN101281751B (de)
AT (1) ATE555471T1 (de)
AU (1) AU2002225953A1 (de)
WO (1) WO2002054380A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3582589B2 (ja) * 2001-03-07 2004-10-27 日本電気株式会社 音声符号化装置及び音声復号化装置
KR100707173B1 (ko) * 2004-12-21 2007-04-13 삼성전자주식회사 저비트율 부호화/복호화방법 및 장치
KR101629661B1 (ko) * 2012-08-29 2016-06-13 니폰 덴신 덴와 가부시끼가이샤 복호 방법, 복호 장치, 프로그램 및 그 기록매체

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5699477A (en) * 1994-11-09 1997-12-16 Texas Instruments Incorporated Mixed excitation linear prediction with fractional pitch
SE506379C3 (sv) * 1995-03-22 1998-01-19 Ericsson Telefon Ab L M Lpc-talkodare med kombinerad excitation
US5692102A (en) * 1995-10-26 1997-11-25 Motorola, Inc. Method device and system for an efficient noise injection process for low bitrate audio compression
TW416044B (en) * 1996-06-19 2000-12-21 Texas Instruments Inc Adaptive filter and filtering method for low bit rate coding
US6134518A (en) * 1997-03-04 2000-10-17 International Business Machines Corporation Digital audio signal coding using a CELP coder and a transform coder
US6029125A (en) * 1997-09-02 2000-02-22 Telefonaktiebolaget L M Ericsson, (Publ) Reducing sparseness in coded speech signals
US6240386B1 (en) * 1998-08-24 2001-05-29 Conexant Systems, Inc. Speech codec employing noise classification for noise compensation
US6173257B1 (en) * 1998-08-24 2001-01-09 Conexant Systems, Inc Completed fixed codebook for speech encoder

Also Published As

Publication number Publication date
AU2002225953A1 (en) 2002-07-16
CN100399420C (zh) 2008-07-02
WO2002054380B1 (en) 2003-03-27
CN1531723A (zh) 2004-09-22
CN101281751A (zh) 2008-10-08
WO2002054380A3 (en) 2002-11-07
CN101281751B (zh) 2012-09-12
KR100540707B1 (ko) 2006-01-11
US20020128828A1 (en) 2002-09-12
US6529867B2 (en) 2003-03-04
EP1348214A4 (de) 2005-08-17
KR20030076596A (ko) 2003-09-26
EP1348214B1 (de) 2012-04-25
WO2002054380A2 (en) 2002-07-11
EP1892701A1 (de) 2008-02-27
EP1348214A2 (de) 2003-10-01

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