PL1789954T3 - Bank filtrów częściowo modulowanych funkcjami zespolonymi - Google Patents

Bank filtrów częściowo modulowanych funkcjami zespolonymi

Info

Publication number
PL1789954T3
PL1789954T3 PL06776967T PL06776967T PL1789954T3 PL 1789954 T3 PL1789954 T3 PL 1789954T3 PL 06776967 T PL06776967 T PL 06776967T PL 06776967 T PL06776967 T PL 06776967T PL 1789954 T3 PL1789954 T3 PL 1789954T3
Authority
PL
Poland
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
PL06776967T
Other languages
English (en)
Inventor
Per Ekstrand
Lars Villemoes
Heiko Purnhagen
Original Assignee
Dolby Int 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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of PL1789954T3 publication Critical patent/PL1789954T3/pl

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)
PL06776967T 2005-09-16 2006-08-18 Bank filtrów częściowo modulowanych funkcjami zespolonymi PL1789954T3 (pl)

Applications Claiming Priority (5)

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
PCT/EP2006/008174 WO2007031171A1 (en) 2005-09-16 2006-08-18 Partially complex modulated filter bank
EP06776967A EP1789954B1 (en) 2005-09-16 2006-08-18 Partially complex modulated filter bank

Publications (1)

Publication Number Publication Date
PL1789954T3 true PL1789954T3 (pl) 2008-06-30

Family

ID=37027686

Family Applications (1)

Application Number Title Priority Date Filing Date
PL06776967T PL1789954T3 (pl) 2005-09-16 2006-08-18 Bank filtrów częściowo modulowanych funkcjami zespolonymi

Country Status (12)

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

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US8521530B1 (en) 2008-06-30 2013-08-27 Audience, Inc. System and method for enhancing a monaural audio signal
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
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 (en) 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
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
ATE382933T1 (de) 2008-01-15
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 (en) 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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