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)
  • Oscillators With Electromechanical Resonators (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Electrotherapy Devices (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 (12)

Country Link
US (3) US7917561B2 (de)
EP (1) EP1789954B1 (de)
JP (5) JP4783377B2 (de)
KR (5) KR101359360B1 (de)
CN (5) CN101819778B (de)
AT (1) ATE382933T1 (de)
DE (1) DE602006000399T2 (de)
ES (1) ES2300099T3 (de)
MY (1) MY141053A (de)
PL (1) PL1789954T3 (de)
TW (1) TWI325684B (de)
WO (1) WO2007031171A1 (de)

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US9496850B2 (en) * 2006-08-04 2016-11-15 Creative Technology Ltd Alias-free subband processing
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WO2010070016A1 (en) 2008-12-19 2010-06-24 Dolby Sweden Ab Method and apparatus for applying reverb to a multi-channel audio signal using spatial cue parameters
TWI559679B (zh) * 2009-02-18 2016-11-21 杜比國際公司 低延遲調變濾波器組及用以設計該低延遲調變濾波器組之方法
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USRE48258E1 (en) 2011-11-11 2020-10-13 Dolby International Ab Upsampling using oversampled SBR
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WO2014047854A1 (zh) 2012-09-27 2014-04-03 华为技术有限公司 基于误差子带的自适应滤波方法及系统
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CN105900455B (zh) 2013-10-22 2018-04-06 延世大学工业学术合作社 用于处理音频信号的方法和设备
WO2015099429A1 (ko) 2013-12-23 2015-07-02 주식회사 윌러스표준기술연구소 오디오 신호 처리 방법, 이를 위한 파라메터화 장치 및 오디오 신호 처리 장치
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US10320365B2 (en) 2014-03-21 2019-06-11 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
US11025230B2 (en) 2014-03-21 2021-06-01 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
US11621701B2 (en) 2014-03-21 2023-04-04 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
JP5209031B2 (ja) 2013-06-12
US20110106541A1 (en) 2011-05-05
JP5209032B2 (ja) 2013-06-12
JP2011102981A (ja) 2011-05-26
KR101190775B1 (ko) 2012-10-16
MY141053A (en) 2010-02-25
EP1789954B1 (de) 2008-01-02
HK1103935A1 (en) 2007-12-28
DE602006000399D1 (de) 2008-02-14
KR100921905B1 (ko) 2009-10-16
JP5209033B2 (ja) 2013-06-12
HK1147837A1 (en) 2011-08-19
TW200715707A (en) 2007-04-16
KR101341365B1 (ko) 2013-12-13
KR20100034056A (ko) 2010-03-31
PL1789954T3 (pl) 2008-06-30
CN101777348A (zh) 2010-07-14
DE602006000399T2 (de) 2008-12-18
US8180818B2 (en) 2012-05-15
CN101819778B (zh) 2013-07-31
CN101031962B (zh) 2011-12-07
US20070100612A1 (en) 2007-05-03
JP2011090316A (ja) 2011-05-06
US20100228555A1 (en) 2010-09-09
CN101777348B (zh) 2012-10-10
JP2008518257A (ja) 2008-05-29
CN101031962A (zh) 2007-09-05
HK1146327A1 (en) 2011-05-20
HK1147838A1 (zh) 2011-08-19
WO2007031171A1 (en) 2007-03-22
KR20100038455A (ko) 2010-04-14
US7917561B2 (en) 2011-03-29
JP2011090317A (ja) 2011-05-06
JP5209034B2 (ja) 2013-06-12
CN101819779A (zh) 2010-09-01
US8180819B2 (en) 2012-05-15
KR101359360B1 (ko) 2014-02-07
KR101304963B1 (ko) 2013-09-06
KR20070088550A (ko) 2007-08-29
CN101819780B (zh) 2011-12-14
TWI325684B (en) 2010-06-01
JP2011070213A (ja) 2011-04-07
EP1789954A1 (de) 2007-05-30
KR20100038234A (ko) 2010-04-13
CN101819779B (zh) 2011-12-14
KR20090028845A (ko) 2009-03-19
JP4783377B2 (ja) 2011-09-28
ES2300099T3 (es) 2008-06-01
CN101819778A (zh) 2010-09-01
CN101819780A (zh) 2010-09-01
HK1147836A1 (en) 2011-08-19

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