WO2010035972A3 - An apparatus for processing an audio signal and method thereof - Google Patents

An apparatus for processing an audio signal and method thereof Download PDF

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Publication number
WO2010035972A3
WO2010035972A3 PCT/KR2009/005189 KR2009005189W WO2010035972A3 WO 2010035972 A3 WO2010035972 A3 WO 2010035972A3 KR 2009005189 W KR2009005189 W KR 2009005189W WO 2010035972 A3 WO2010035972 A3 WO 2010035972A3
Authority
WO
WIPO (PCT)
Prior art keywords
current frame
band extension
audio signal
scheme
extension scheme
Prior art date
Application number
PCT/KR2009/005189
Other languages
French (fr)
Other versions
WO2010035972A2 (en
Inventor
Hyun Kook Lee
Sung Yong Yoon
Dong Soo Kim
Jae Hyun Lim
Original Assignee
Lg Electronics 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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2010035972A2 publication Critical patent/WO2010035972A2/en
Publication of WO2010035972A3 publication Critical patent/WO2010035972A3/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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Abstract

An apparatus for processing an audio signal and method thereof are disclosed, by which a band extension scheme can be selectively applied according to a characteristic of an audio signal. The present invention includes receiving a signal and coding scheme information indicating whether a band extension scheme is applied to a current frame of the signal, by an audio processing apparatus, if the coding scheme information indicates that the band extension scheme is applied to the current frame, reconstructing a higher band in the current frame using the band extension scheme, and if the coding scheme information indicates that the band extension scheme is not applied to the current frame, decoding the current frame without using the band extension scheme.
PCT/KR2009/005189 2008-09-25 2009-09-11 An apparatus for processing an audio signal and method thereof WO2010035972A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10026308P 2008-09-25 2008-09-25
US61/100,263 2008-09-25

Publications (2)

Publication Number Publication Date
WO2010035972A2 WO2010035972A2 (en) 2010-04-01
WO2010035972A3 true WO2010035972A3 (en) 2010-07-15

Family

ID=42060233

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/005189 WO2010035972A2 (en) 2008-09-25 2009-09-11 An apparatus for processing an audio signal and method thereof

Country Status (1)

Country Link
WO (1) WO2010035972A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681202B1 (en) * 1999-11-10 2004-01-20 Koninklijke Philips Electronics N.V. Wide band synthesis through extension matrix

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681202B1 (en) * 1999-11-10 2004-01-20 Koninklijke Philips Electronics N.V. Wide band synthesis through extension matrix

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHONG KOK SENG ET AL.: "Low power spectral band replication technology for th e MPEG-4 audio standard", JOINT CONF. OF INT. CONF. ON INFORMATION, COMMUNI CATION AND SIGNAL PROCESSING AND THE FOURTH PACIFIC RIM CONF. ON MULTIMEDIA, December 2003 (2003-12-01) *
EHERT, A.: "Audio coding technology of ExAC", SYMP. ON INTELLIGENT MULT IMEDIA, VIDEO AND SPEECH PROCESSING, June 2004 (2004-06-01) *
JOHATHAN STOTT: "DRM - key technical features", EBU TECHNICAL REVIEW, 2 March 2001 (2001-03-02), pages 11 - 12 *
SANG-WOOK SHIN ET AL.: "Designing a unified speech/audio codec by adopting a single channel harmonic source separation module", IEEE 08' ISASSP, 31 March 2008 (2008-03-31), pages 185 - 187 *

Also Published As

Publication number Publication date
WO2010035972A2 (en) 2010-04-01

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