WO2002023534A3 - Selection of coding parameters based on spectral content of a speech signal - Google Patents

Selection of coding parameters based on spectral content of a speech signal Download PDF

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Publication number
WO2002023534A3
WO2002023534A3 PCT/IB2001/001721 IB0101721W WO0223534A3 WO 2002023534 A3 WO2002023534 A3 WO 2002023534A3 IB 0101721 W IB0101721 W IB 0101721W WO 0223534 A3 WO0223534 A3 WO 0223534A3
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WO
WIPO (PCT)
Prior art keywords
speech signal
coding
selection
coding parameters
parameters based
Prior art date
Application number
PCT/IB2001/001721
Other languages
French (fr)
Other versions
WO2002023534A2 (en
Inventor
Yang Gao
Huan-Yu Su
Original Assignee
Conexant Systems 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 Conexant Systems Inc filed Critical Conexant Systems Inc
Priority to AU2001287963A priority Critical patent/AU2001287963A1/en
Publication of WO2002023534A2 publication Critical patent/WO2002023534A2/en
Publication of WO2002023534A3 publication Critical patent/WO2002023534A3/en

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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
    • G10L19/04—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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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

Abstract

In a coding procedure, coding parameters are selected for coding the speech signal to achieve enhanced perceptual quality of reproduced speech. At least one coding parameter value or preferential coding parameter value is selected to make a spectral response of the speech signal more uniform to compensate for spectral variations that might otherwise be imparted into the speech signal by a communications network associated with the signal processing system.
PCT/IB2001/001721 2000-09-15 2001-09-17 Selection of coding parameters based on spectral content of a speech signal WO2002023534A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001287963A AU2001287963A1 (en) 2000-09-15 2001-09-17 Selection of coding parameters based on spectral content of a speech signal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23304400P 2000-09-15 2000-09-15
US60/233,044 2000-09-15
US09/783,822 2001-02-14
US09/783,822 US6850884B2 (en) 2000-09-15 2001-02-14 Selection of coding parameters based on spectral content of a speech signal

Publications (2)

Publication Number Publication Date
WO2002023534A2 WO2002023534A2 (en) 2002-03-21
WO2002023534A3 true WO2002023534A3 (en) 2002-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/001721 WO2002023534A2 (en) 2000-09-15 2001-09-17 Selection of coding parameters based on spectral content of a speech signal

Country Status (3)

Country Link
US (1) US6850884B2 (en)
AU (1) AU2001287963A1 (en)
WO (1) WO2002023534A2 (en)

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US8682652B2 (en) * 2006-06-30 2014-03-25 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
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Also Published As

Publication number Publication date
WO2002023534A2 (en) 2002-03-21
AU2001287963A1 (en) 2002-03-26
US6850884B2 (en) 2005-02-01
US20020143527A1 (en) 2002-10-03

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