KR20040004420A - 가변율 보코더의 인코딩 속도를 선택하기 위한 방법 및 장치 - Google Patents

가변율 보코더의 인코딩 속도를 선택하기 위한 방법 및 장치 Download PDF

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Publication number
KR20040004420A
KR20040004420A KR10-2003-7005883A KR20037005883A KR20040004420A KR 20040004420 A KR20040004420 A KR 20040004420A KR 20037005883 A KR20037005883 A KR 20037005883A KR 20040004420 A KR20040004420 A KR 20040004420A
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South Korea
Prior art keywords
determining
subband
signal
threshold
rate
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KR10-2003-7005883A
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English (en)
Korean (ko)
Inventor
앤드류 피. 데자코
윌리암 알. 가드너
Original Assignee
콸콤 인코포레이티드
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Application filed by 콸콤 인코포레이티드 filed Critical 콸콤 인코포레이티드
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Withdrawn legal-status Critical Current

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    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208—Subband 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external 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
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Dc Digital Transmission (AREA)
KR10-2003-7005883A 1994-08-10 1995-08-01 가변율 보코더의 인코딩 속도를 선택하기 위한 방법 및 장치 Withdrawn KR20040004420A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/288,413 US5742734A (en) 1994-08-10 1994-08-10 Encoding rate selection in a variable rate vocoder
US08/288,413 1994-08-10
PCT/US1995/009830 WO1996005592A1 (en) 1994-08-10 1995-08-01 Method and apparatus for selecting an encoding rate in a variable rate vocoder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
KR1019960701839A Division KR100455826B1 (ko) 1994-08-10 1995-08-01 가변율보코더의인코딩속도를선택하기위한방법및장치

Publications (1)

Publication Number Publication Date
KR20040004420A true KR20040004420A (ko) 2004-01-13

Family

ID=23106989

Family Applications (3)

Application Number Title Priority Date Filing Date
KR10-2003-7005883A Withdrawn KR20040004420A (ko) 1994-08-10 1995-08-01 가변율 보코더의 인코딩 속도를 선택하기 위한 방법 및 장치
KR10-2003-7005884A Expired - Lifetime KR100455225B1 (ko) 1994-08-10 1995-08-01 보코더에 의해 인코드되는 다수의 프레임들에 잔존 프레임들을 추가하는 방법 및 장치
KR1019960701839A Expired - Lifetime KR100455826B1 (ko) 1994-08-10 1995-08-01 가변율보코더의인코딩속도를선택하기위한방법및장치

Family Applications After (2)

Application Number Title Priority Date Filing Date
KR10-2003-7005884A Expired - Lifetime KR100455225B1 (ko) 1994-08-10 1995-08-01 보코더에 의해 인코드되는 다수의 프레임들에 잔존 프레임들을 추가하는 방법 및 장치
KR1019960701839A Expired - Lifetime KR100455826B1 (ko) 1994-08-10 1995-08-01 가변율보코더의인코딩속도를선택하기위한방법및장치

Country Status (19)

Country Link
US (1) US5742734A (cg-RX-API-DMAC7.html)
EP (6) EP1530201B1 (cg-RX-API-DMAC7.html)
JP (8) JP3502101B2 (cg-RX-API-DMAC7.html)
KR (3) KR20040004420A (cg-RX-API-DMAC7.html)
CN (5) CN1168071C (cg-RX-API-DMAC7.html)
AT (5) ATE285620T1 (cg-RX-API-DMAC7.html)
AU (1) AU711401B2 (cg-RX-API-DMAC7.html)
BR (2) BR9510780B1 (cg-RX-API-DMAC7.html)
CA (3) CA2488921C (cg-RX-API-DMAC7.html)
DE (5) DE69534285T3 (cg-RX-API-DMAC7.html)
DK (3) DK1239465T4 (cg-RX-API-DMAC7.html)
ES (5) ES2194921T3 (cg-RX-API-DMAC7.html)
FI (5) FI117993B (cg-RX-API-DMAC7.html)
IL (1) IL114874A (cg-RX-API-DMAC7.html)
MX (1) MX9600920A (cg-RX-API-DMAC7.html)
PT (3) PT1233408E (cg-RX-API-DMAC7.html)
TW (1) TW277189B (cg-RX-API-DMAC7.html)
WO (1) WO1996005592A1 (cg-RX-API-DMAC7.html)
ZA (1) ZA956081B (cg-RX-API-DMAC7.html)

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