WO2002023536A3 - Formant emphasis in celp speech coding - Google Patents

Formant emphasis in celp speech coding Download PDF

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Publication number
WO2002023536A3
WO2002023536A3 PCT/IB2001/001730 IB0101730W WO0223536A3 WO 2002023536 A3 WO2002023536 A3 WO 2002023536A3 IB 0101730 W IB0101730 W IB 0101730W WO 0223536 A3 WO0223536 A3 WO 0223536A3
Authority
WO
WIPO (PCT)
Prior art keywords
speech coding
short
celp speech
circuit
formant emphasis
Prior art date
Application number
PCT/IB2001/001730
Other languages
French (fr)
Other versions
WO2002023536A2 (en
Inventor
Yang Gao
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
Priority claimed from US09/771,293 external-priority patent/US6678651B2/en
Application filed by Conexant Systems Inc filed Critical Conexant Systems Inc
Priority to AU2001287970A priority Critical patent/AU2001287970A1/en
Publication of WO2002023536A2 publication Critical patent/WO2002023536A2/en
Publication of WO2002023536A3 publication Critical patent/WO2002023536A3/en

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
    • G10L19/04—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 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/15—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being formant information

Abstract

A speech-coding device includes a fixed codebook, an adaptive codebook, a short-term enhancement circuit, and a summing circuit. The short-term enhancement circuit connects an output of the fixed codebook to a summing circuit. The summing circuit adds an adaptive codebook contribution to a fixed codebook contribution. The short-term enhancement circuit can also be connected to a synthesis filter to emphasize the spectral formants in an encoder and a decoder.
PCT/IB2001/001730 2000-09-15 2001-09-17 Formant emphasis in celp speech coding WO2002023536A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001287970A AU2001287970A1 (en) 2000-09-15 2001-09-17 Short-term enhancement in celp speech coding

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23293900P 2000-09-15 2000-09-15
US60/232,939 2000-09-15
US09/771,293 2001-01-25
US09/771,293 US6678651B2 (en) 2000-09-15 2001-01-25 Short-term enhancement in CELP speech coding

Publications (2)

Publication Number Publication Date
WO2002023536A2 WO2002023536A2 (en) 2002-03-21
WO2002023536A3 true WO2002023536A3 (en) 2002-06-13

Family

ID=26926473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/001730 WO2002023536A2 (en) 2000-09-15 2001-09-17 Formant emphasis in celp speech coding

Country Status (2)

Country Link
AU (1) AU2001287970A1 (en)
WO (1) WO2002023536A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9728200B2 (en) 2013-01-29 2017-08-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive formant sharpening in linear prediction coding
US9620134B2 (en) * 2013-10-10 2017-04-11 Qualcomm Incorporated Gain shape estimation for improved tracking of high-band temporal characteristics
US10083708B2 (en) 2013-10-11 2018-09-25 Qualcomm Incorporated Estimation of mixing factors to generate high-band excitation signal
US10614816B2 (en) 2013-10-11 2020-04-07 Qualcomm Incorporated Systems and methods of communicating redundant frame information
US9384746B2 (en) 2013-10-14 2016-07-05 Qualcomm Incorporated Systems and methods of energy-scaled signal processing
US10163447B2 (en) 2013-12-16 2018-12-25 Qualcomm Incorporated High-band signal modeling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
WO1994025959A1 (en) * 1993-04-29 1994-11-10 Unisearch Limited Use of an auditory model to improve quality or lower the bit rate of speech synthesis systems
US5884251A (en) * 1996-05-25 1999-03-16 Samsung Electronics Co., Ltd. Voice coding and decoding method and device therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
WO1994025959A1 (en) * 1993-04-29 1994-11-10 Unisearch Limited Use of an auditory model to improve quality or lower the bit rate of speech synthesis systems
US5884251A (en) * 1996-05-25 1999-03-16 Samsung Electronics Co., Ltd. Voice coding and decoding method and device therefor

Also Published As

Publication number Publication date
WO2002023536A2 (en) 2002-03-21
AU2001287970A1 (en) 2002-03-26

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