ATE382933T1 - Teilweise komplexmodulierte filterbank - Google Patents

Teilweise komplexmodulierte filterbank

Info

Publication number
ATE382933T1
ATE382933T1 AT06776967T AT06776967T ATE382933T1 AT E382933 T1 ATE382933 T1 AT E382933T1 AT 06776967 T AT06776967 T AT 06776967T AT 06776967 T AT06776967 T AT 06776967T AT E382933 T1 ATE382933 T1 AT E382933T1
Authority
AT
Austria
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
AT06776967T
Other languages
English (en)
Inventor
Per Ekstrand
Lars Villemoes
Heiko Purnhagen
Original Assignee
Coding Tech Ab
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 Coding Tech Ab filed Critical Coding Tech Ab
Application granted granted Critical
Publication of ATE382933T1 publication Critical patent/ATE382933T1/de

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208—Subband vocoders
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Electrotherapy Devices (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
AT06776967T 2005-09-16 2006-08-18 Teilweise komplexmodulierte filterbank ATE382933T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0502049 2005-09-16
US73368205P 2005-11-03 2005-11-03
US11/463,263 US7917561B2 (en) 2005-09-16 2006-08-08 Partially complex modulated filter bank

Publications (1)

Publication Number Publication Date
ATE382933T1 true ATE382933T1 (de) 2008-01-15

Family

ID=37027686

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06776967T ATE382933T1 (de) 2005-09-16 2006-08-18 Teilweise komplexmodulierte filterbank

Country Status (13)

Country Link
US (3) US7917561B2 (de)
EP (1) EP1789954B1 (de)
JP (5) JP4783377B2 (de)
KR (5) KR101359360B1 (de)
CN (5) CN101819779B (de)
AT (1) ATE382933T1 (de)
DE (1) DE602006000399T2 (de)
ES (1) ES2300099T3 (de)
HK (5) HK1103935A1 (de)
MY (1) MY141053A (de)
PL (1) PL1789954T3 (de)
TW (1) TWI325684B (de)
WO (1) WO2007031171A1 (de)

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US8934641B2 (en) * 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
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TWI621332B (zh) 2009-02-18 2018-04-11 杜比國際公司 用於高頻重建或參數立體聲之複指數調變濾波器組
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US10580417B2 (en) 2013-10-22 2020-03-03 Industry-Academic Cooperation Foundation, Yonsei University Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain
JP6151866B2 (ja) 2013-12-23 2017-06-21 ウィルス インスティテュート オブ スタンダーズ アンド テクノロジー インコーポレイティド オーディオ信号のフィルタ生成方法およびそのためのパラメータ化装置
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US11025230B2 (en) 2014-03-21 2021-06-01 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
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Also Published As

Publication number Publication date
JP5209032B2 (ja) 2013-06-12
KR20090028845A (ko) 2009-03-19
US20110106541A1 (en) 2011-05-05
CN101819780A (zh) 2010-09-01
HK1146327A1 (en) 2011-05-20
US20070100612A1 (en) 2007-05-03
CN101819780B (zh) 2011-12-14
EP1789954B1 (de) 2008-01-02
JP5209033B2 (ja) 2013-06-12
KR20100034056A (ko) 2010-03-31
MY141053A (en) 2010-02-25
CN101819778A (zh) 2010-09-01
TW200715707A (en) 2007-04-16
KR101190775B1 (ko) 2012-10-16
DE602006000399D1 (de) 2008-02-14
KR20100038234A (ko) 2010-04-13
ES2300099T3 (es) 2008-06-01
US20100228555A1 (en) 2010-09-09
KR20100038455A (ko) 2010-04-14
US8180819B2 (en) 2012-05-15
JP5209031B2 (ja) 2013-06-12
CN101777348B (zh) 2012-10-10
CN101819779B (zh) 2011-12-14
HK1147836A1 (en) 2011-08-19
JP4783377B2 (ja) 2011-09-28
CN101819778B (zh) 2013-07-31
TWI325684B (en) 2010-06-01
CN101031962A (zh) 2007-09-05
WO2007031171A1 (en) 2007-03-22
KR101341365B1 (ko) 2013-12-13
US8180818B2 (en) 2012-05-15
EP1789954A1 (de) 2007-05-30
KR20070088550A (ko) 2007-08-29
JP2008518257A (ja) 2008-05-29
CN101031962B (zh) 2011-12-07
US7917561B2 (en) 2011-03-29
CN101777348A (zh) 2010-07-14
HK1147838A1 (en) 2011-08-19
JP2011090316A (ja) 2011-05-06
JP5209034B2 (ja) 2013-06-12
HK1103935A1 (en) 2007-12-28
DE602006000399T2 (de) 2008-12-18
KR100921905B1 (ko) 2009-10-16
JP2011090317A (ja) 2011-05-06
CN101819779A (zh) 2010-09-01
KR101359360B1 (ko) 2014-02-07
HK1147837A1 (en) 2011-08-19
KR101304963B1 (ko) 2013-09-06
PL1789954T3 (pl) 2008-06-30
JP2011102981A (ja) 2011-05-26
JP2011070213A (ja) 2011-04-07

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