ATE50896T1 - Sprachkodierung im frequenzbereich. - Google Patents

Sprachkodierung im frequenzbereich.

Info

Publication number
ATE50896T1
ATE50896T1 AT85306015T AT85306015T ATE50896T1 AT E50896 T1 ATE50896 T1 AT E50896T1 AT 85306015 T AT85306015 T AT 85306015T AT 85306015 T AT85306015 T AT 85306015T AT E50896 T1 ATE50896 T1 AT E50896T1
Authority
AT
Austria
Prior art keywords
frequency domain
voice coding
bits
channels
coder
Prior art date
Application number
AT85306015T
Other languages
English (en)
Inventor
Soo Ngee Koh
Costas S Xydeas
Eng Loughborough Electrical
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Application granted granted Critical
Publication of ATE50896T1 publication Critical patent/ATE50896T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
AT85306015T 1984-08-24 1985-08-23 Sprachkodierung im frequenzbereich. ATE50896T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848421498A GB8421498D0 (en) 1984-08-24 1984-08-24 Frequency domain speech coding
EP85306015A EP0176243B1 (de) 1984-08-24 1985-08-23 Sprachkodierung im Frequenzbereich

Publications (1)

Publication Number Publication Date
ATE50896T1 true ATE50896T1 (de) 1990-03-15

Family

ID=10565770

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85306015T ATE50896T1 (de) 1984-08-24 1985-08-23 Sprachkodierung im frequenzbereich.

Country Status (7)

Country Link
US (1) US4949383A (de)
EP (1) EP0176243B1 (de)
JP (1) JPS61112433A (de)
AT (1) ATE50896T1 (de)
CA (1) CA1248234A (de)
DE (1) DE3576444D1 (de)
GB (1) GB8421498D0 (de)

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Also Published As

Publication number Publication date
DE3576444D1 (de) 1990-04-12
JPH0525408B2 (de) 1993-04-12
US4949383A (en) 1990-08-14
JPS61112433A (ja) 1986-05-30
EP0176243A2 (de) 1986-04-02
GB8421498D0 (en) 1984-09-26
EP0176243A3 (en) 1986-12-30
CA1248234A (en) 1989-01-03
EP0176243B1 (de) 1990-03-07

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