CN100353664C - 音频信号处理方法 - Google Patents

音频信号处理方法 Download PDF

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Publication number
CN100353664C
CN100353664C CNB998043036A CN99804303A CN100353664C CN 100353664 C CN100353664 C CN 100353664C CN B998043036 A CNB998043036 A CN B998043036A CN 99804303 A CN99804303 A CN 99804303A CN 100353664 C CN100353664 C CN 100353664C
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CN
China
Prior art keywords
signal
audio
impulse response
input
output
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.)
Expired - Lifetime
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CNB998043036A
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English (en)
Chinese (zh)
Other versions
CN1294782A (zh
Inventor
戴维·斯坦利·麦克格拉思
亚当·理查德·麦克基格
格伦·诺曼·迪肯斯
理查德·詹姆斯·卡特赖特
安德鲁·彼得·赖利
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Dolby Laboratories Licensing Corp
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Lake DSP Pty Ltd
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 AUPP2595A external-priority patent/AUPP259598A0/en
Priority claimed from AUPP2709A external-priority patent/AUPP270998A0/en
Priority claimed from AUPP2710A external-priority patent/AUPP271098A0/en
Priority claimed from AUPP7164A external-priority patent/AUPP716498A0/en
Application filed by Lake DSP Pty Ltd filed Critical Lake DSP Pty Ltd
Publication of CN1294782A publication Critical patent/CN1294782A/zh
Application granted granted Critical
Publication of CN100353664C publication Critical patent/CN100353664C/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H04S3/004—For headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/305—Electronic adaptation of stereophonic audio signals to reverberation of the listening space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Data Mining & Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Stereophonic System (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Circuit For Audible Band Transducer (AREA)
CNB998043036A 1998-03-25 1999-01-06 音频信号处理方法 Expired - Lifetime CN100353664C (zh)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AUPP2595 1998-03-25
AUPP2595A AUPP259598A0 (en) 1998-03-25 1998-03-25 Sound signal processing apparatus (PAT 51)
AUPP2709 1998-03-31
AUPP2709A AUPP270998A0 (en) 1998-03-31 1998-03-31 New variants on low-latency convolution - reduced computation requirement by sharing filter tails between multiple channels
AUPP2710A AUPP271098A0 (en) 1998-03-31 1998-03-31 New variants on low-latency convolution - reduced computation by using band-limited coefficients in the filter tails
AUPP2710 1998-03-31
AUPP7164A AUPP716498A0 (en) 1998-11-12 1998-11-12 Audio signal processing apparatus (pat 82)
AUPP7164 1998-11-12

Publications (2)

Publication Number Publication Date
CN1294782A CN1294782A (zh) 2001-05-09
CN100353664C true CN100353664C (zh) 2007-12-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB998043036A Expired - Lifetime CN100353664C (zh) 1998-03-25 1999-01-06 音频信号处理方法

Country Status (11)

Country Link
US (1) US6741706B1 (enExample)
EP (1) EP1072089B1 (enExample)
JP (3) JP2002508616A (enExample)
KR (1) KR100598003B1 (enExample)
CN (1) CN100353664C (enExample)
AT (1) ATE501606T1 (enExample)
AU (1) AU751900B2 (enExample)
CA (1) CA2325482C (enExample)
DE (1) DE69943265D1 (enExample)
DK (1) DK1072089T3 (enExample)
WO (1) WO1999049574A1 (enExample)

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Also Published As

Publication number Publication date
EP1072089B1 (en) 2011-03-09
EP1072089A4 (en) 2007-06-13
CA2325482C (en) 2009-12-15
KR100598003B1 (ko) 2006-07-06
EP1072089A1 (en) 2001-01-31
KR20010042169A (ko) 2001-05-25
CN1294782A (zh) 2001-05-09
JP4726875B2 (ja) 2011-07-20
DK1072089T3 (da) 2011-06-27
AU1743899A (en) 1999-10-18
CA2325482A1 (en) 1999-09-30
AU751900B2 (en) 2002-08-29
JP2002508616A (ja) 2002-03-19
JP2008058984A (ja) 2008-03-13
US6741706B1 (en) 2004-05-25
WO1999049574A1 (en) 1999-09-30
ATE501606T1 (de) 2011-03-15
JP2011083018A (ja) 2011-04-21
DE69943265D1 (de) 2011-04-21

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