EP2051245A3 - Wideband audio signal coding/decoding device and method - Google Patents

Wideband audio signal coding/decoding device and method Download PDF

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Publication number
EP2051245A3
EP2051245A3 EP08105551.9A EP08105551A EP2051245A3 EP 2051245 A3 EP2051245 A3 EP 2051245A3 EP 08105551 A EP08105551 A EP 08105551A EP 2051245 A3 EP2051245 A3 EP 2051245A3
Authority
EP
European Patent Office
Prior art keywords
audio signal
wideband audio
wideband
decoding device
spectrum parameter
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.)
Withdrawn
Application number
EP08105551.9A
Other languages
German (de)
French (fr)
Other versions
EP2051245A2 (en
Inventor
Hong Kook Kim
Young Han Lee
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.)
Gwangju Institute of Science and Technology
Original Assignee
Gwangju Institute of Science and Technology
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 Gwangju Institute of Science and Technology filed Critical Gwangju Institute of Science and Technology
Publication of EP2051245A2 publication Critical patent/EP2051245A2/en
Publication of EP2051245A3 publication Critical patent/EP2051245A3/en
Withdrawn legal-status Critical Current

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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
    • 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • 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 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
    • G10L25/12—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 prediction coefficients
    • 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
    • G10L25/24—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 the cepstrum

Abstract

Disclosed is a wideband audio signal coding/decoding device and method that may code a wideband audio signal while maintaining a low bit rate.
The wideband audio signal coding device includes an enhancement layer (200) that extracts a first spectrum parameter from an inputted wideband signal having a first bandwidth, quantizes the extracted first spectrum parameter, and converts the extracted first spectrum parameter into a second spectrum parameter; and a coding unit (130) that extracts a narrowband signal from the inputted wideband signal and codes the narrowband signal based on the second spectrum parameter provided from the enhancement layer, wherein the narrowband signal has a second bandwidth smaller than the first bandwidth.
The wideband audio signal coding/decoding device and method may code a wideband audio signal while maintaining a low bit rate.
EP08105551.9A 2007-10-17 2008-10-10 Wideband audio signal coding/decoding device and method Withdrawn EP2051245A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2007104402 2007-10-17

Publications (2)

Publication Number Publication Date
EP2051245A2 EP2051245A2 (en) 2009-04-22
EP2051245A3 true EP2051245A3 (en) 2013-07-10

Family

ID=40139141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105551.9A Withdrawn EP2051245A3 (en) 2007-10-17 2008-10-10 Wideband audio signal coding/decoding device and method

Country Status (1)

Country Link
EP (1) EP2051245A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105551497B (en) 2013-01-15 2019-03-19 华为技术有限公司 Coding method, coding/decoding method, encoding apparatus and decoding apparatus
AU2014360038B2 (en) * 2013-12-02 2017-11-02 Huawei Technologies Co., Ltd. Encoding method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YOUNG HAN LEE ET AL: "Bandwidth Extension of a Narrowband Speech Coder for Music Delivery over IP", 9 November 2006, ADVANCES IN HYBRID INFORMATION TECHNOLOGY; [LECTURE NOTES IN COMPUTER SCIENCE], SPRINGER BERLIN HEIDELBERG, BERLIN, HEIDELBERG, PAGE(S) 198 - 208, ISBN: 978-3-540-77367-2, XP019085866 *
YOUNG HAN LEE ET AL: "Bandwidth Extension of a Narrowband Speech Coder for Music Streaming Services Over IP Networks", SIGNAL PROCESSING SYSTEMS, 2007 IEEE WORKSHOP ON, IEEE, PI, 1 October 2007 (2007-10-01), pages 552 - 555, XP031164023, ISBN: 978-1-4244-1221-1 *

Also Published As

Publication number Publication date
EP2051245A2 (en) 2009-04-22

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