WO2010013941A3 - 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
WO2010013941A3
WO2010013941A3 PCT/KR2009/004220 KR2009004220W WO2010013941A3 WO 2010013941 A3 WO2010013941 A3 WO 2010013941A3 KR 2009004220 W KR2009004220 W KR 2009004220W WO 2010013941 A3 WO2010013941 A3 WO 2010013941A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
gain
signal
term power
processing
Prior art date
Application number
PCT/KR2009/004220
Other languages
French (fr)
Other versions
WO2010013941A2 (en
Inventor
Hyen O Oh
Jong Ha Moon
Alexis Favrot
Christof Faller
Joon Il Lee
Myung Hoon Lee
Yang Won Jung
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.
Priority to CN2009801148963A priority Critical patent/CN102016994B/en
Publication of WO2010013941A2 publication Critical patent/WO2010013941A2/en
Publication of WO2010013941A3 publication Critical patent/WO2010013941A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals

Abstract

An apparatus for processing an audio signal and method thereof are disclosed, by which a local dynamic range of an audio signal can be adaptively normalized as well as a maximum dynamic range of the audio signal. The present invention includes receiving a signal, by an audio processing apparatus; computing a long-term power and a short-term power by estimating power of the signal; generating a slow gain based on the long-term power; generating a fast gain based on the short-term power; obtaining a final gain by combining the slow gain and the fast gain; and, modifying the signal using the final gain.
PCT/KR2009/004220 2008-07-29 2009-07-29 An apparatus for processing an audio signal and method thereof WO2010013941A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009801148963A CN102016994B (en) 2008-07-29 2009-07-29 An apparatus for processing an audio signal and method thereof

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US8426508P 2008-07-29 2008-07-29
US61/084,265 2008-07-29
US15838809P 2009-03-08 2009-03-08
US61/158,388 2009-03-08
US16445909P 2009-03-29 2009-03-29
US61/164,459 2009-03-29

Publications (2)

Publication Number Publication Date
WO2010013941A2 WO2010013941A2 (en) 2010-02-04
WO2010013941A3 true WO2010013941A3 (en) 2010-06-24

Family

ID=41119934

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/KR2009/004218 WO2010013939A2 (en) 2008-07-29 2009-07-29 An apparatus for processing an audio signal and method thereof
PCT/KR2009/004220 WO2010013941A2 (en) 2008-07-29 2009-07-29 An apparatus for processing an audio signal and method thereof

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/004218 WO2010013939A2 (en) 2008-07-29 2009-07-29 An apparatus for processing an audio signal and method thereof

Country Status (5)

Country Link
US (2) US8275154B2 (en)
EP (2) EP2149985B1 (en)
CN (2) CN102016994B (en)
TW (2) TWI422147B (en)
WO (2) WO2010013939A2 (en)

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US20160065160A1 (en) * 2013-03-21 2016-03-03 Intellectual Discovery Co., Ltd. Terminal device and audio signal output method thereof
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CN105322904B (en) * 2015-09-08 2017-03-22 湖南国科微电子股份有限公司 Method for controlling level of digital audio signal
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WO2018130287A1 (en) * 2017-01-12 2018-07-19 Sonova Ag Hearing device with acoustic shock control and method for acoustic shock control in a hearing device
WO2018201374A1 (en) * 2017-05-04 2018-11-08 Harman International Industries, Incorporated Method and device for adjusting audio signal, and audio system
CN109854230B (en) * 2017-11-30 2022-05-10 中国石油天然气股份有限公司 Well testing method and device
CN110631691B (en) * 2019-09-09 2021-06-11 国网湖南省电力有限公司 Power equipment noise separation effect verification method and system, separation equipment and medium
CN114125658B (en) * 2020-08-25 2023-12-19 上海艾为电子技术股份有限公司 Dynamic range control circuit, audio processing chip and audio processing method thereof
CN114915275A (en) * 2021-02-08 2022-08-16 祖玛视频通讯公司 Two-stage digital automatic gain control

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Also Published As

Publication number Publication date
TW201106618A (en) 2011-02-16
EP2149986B1 (en) 2017-10-25
EP2149985A1 (en) 2010-02-03
TWI422147B (en) 2014-01-01
WO2010013939A2 (en) 2010-02-04
TW201030736A (en) 2010-08-16
CN102016995A (en) 2011-04-13
EP2149986A1 (en) 2010-02-03
CN102016994B (en) 2013-07-17
EP2149985B1 (en) 2013-04-03
CN102016995B (en) 2013-07-10
US20100085117A1 (en) 2010-04-08
WO2010013939A3 (en) 2010-06-24
US20100061566A1 (en) 2010-03-11
US8275154B2 (en) 2012-09-25
WO2010013941A2 (en) 2010-02-04
US8275150B2 (en) 2012-09-25
TWI397058B (en) 2013-05-21
CN102016994A (en) 2011-04-13

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