CA2099655A1 - Speech encoding - Google Patents

Speech encoding

Info

Publication number
CA2099655A1
CA2099655A1 CA002099655A CA2099655A CA2099655A1 CA 2099655 A1 CA2099655 A1 CA 2099655A1 CA 002099655 A CA002099655 A CA 002099655A CA 2099655 A CA2099655 A CA 2099655A CA 2099655 A1 CA2099655 A1 CA 2099655A1
Authority
CA
Canada
Prior art keywords
bands
speech
signal
reduced number
bandwidth
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002099655A
Other languages
French (fr)
Other versions
CA2099655C (en
Inventor
Hisham Hassanein
Andre Brind'amour
Karen Bryden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Her Majesty In Right Of Canada Commucations, Minister of
Original Assignee
Hisham Hassanein
Andre Brind'amour
Karen Bryden
Her Majesty In Right Of Canada As Represented By The Minister Of Commucations
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
Priority to US08/079,912 priority Critical patent/US5574823A/en
Application filed by Hisham Hassanein, Andre Brind'amour, Karen Bryden, Her Majesty In Right Of Canada As Represented By The Minister Of Commucations filed Critical Hisham Hassanein
Priority to CA002099655A priority patent/CA2099655C/en
Publication of CA2099655A1 publication Critical patent/CA2099655A1/en
Application granted granted Critical
Publication of CA2099655C publication Critical patent/CA2099655C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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 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
    • G10L19/08—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

Abstract

The present invention relates to a method of encoding speech comprised of processing the speech by harmonic coding to provide, a fundamental frequency signal, and a set of optimal harmonic amplitudes, processing the harmonic amplitudes, and the fundamental frequency signal to select a reduced number of bands, and to provide for the reduced number of bands a voiced and unvoiced decision signal, an optimal subset of magnitudes and a signal indicating the positions of the reduced number of bands, whereby the speech signal may be encoded and transmitted as the pitch signal and the signals provided for the reduced number of bands with a bandwidth that is a fraction of the bandwidth of the speech.
CA002099655A 1993-06-23 1993-06-24 Speech encoding Expired - Fee Related CA2099655C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/079,912 US5574823A (en) 1993-06-23 1993-06-23 Frequency selective harmonic coding
CA002099655A CA2099655C (en) 1993-06-23 1993-06-24 Speech encoding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/079,912 US5574823A (en) 1993-06-23 1993-06-23 Frequency selective harmonic coding
CA002099655A CA2099655C (en) 1993-06-23 1993-06-24 Speech encoding

Publications (2)

Publication Number Publication Date
CA2099655A1 true CA2099655A1 (en) 1994-12-25
CA2099655C CA2099655C (en) 2002-12-31

Family

ID=25676333

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002099655A Expired - Fee Related CA2099655C (en) 1993-06-23 1993-06-24 Speech encoding

Country Status (2)

Country Link
US (1) US5574823A (en)
CA (1) CA2099655C (en)

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EP0780831A2 (en) * 1995-12-23 1997-06-25 Nec Corporation Coding of a speech or music signal with quantization of harmonics components specifically and then residue components
EP0780831A3 (en) * 1995-12-23 1998-08-05 Nec Corporation Coding of a speech or music signal with quantization of harmonics components specifically and then residue components

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