HK1103935A1 - Partially complex modulated filter bank - Google Patents

Partially complex modulated filter bank

Info

Publication number
HK1103935A1
HK1103935A1 HK07108196A HK07108196A HK1103935A1 HK 1103935 A1 HK1103935 A1 HK 1103935A1 HK 07108196 A HK07108196 A HK 07108196A HK 07108196 A HK07108196 A HK 07108196A HK 1103935 A1 HK1103935 A1 HK 1103935A1
Authority
HK
Hong Kong
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
HK07108196A
Other languages
English (en)
Inventor
Ekstrand Per
Villemoes Lars
Purnhagen Heiko
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
Publication of HK1103935A1 publication Critical patent/HK1103935A1/xx

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)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (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)
HK07108196A 2005-09-16 2007-07-27 Partially complex modulated filter bank HK1103935A1 (en)

Applications Claiming Priority (4)

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

Publications (1)

Publication Number Publication Date
HK1103935A1 true HK1103935A1 (en) 2007-12-28

Family

ID=37027686

Family Applications (5)

Application Number Title Priority Date Filing Date
HK07108196A HK1103935A1 (en) 2005-09-16 2007-07-27 Partially complex modulated filter bank
HK11100389.6A HK1146327A1 (en) 2005-09-16 2011-01-14 Partially complex modulated filter bank
HK11101942.4A HK1147837A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank
HK11101939.9A HK1147836A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank
HK11101943.3A HK1147838A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank

Family Applications After (4)

Application Number Title Priority Date Filing Date
HK11100389.6A HK1146327A1 (en) 2005-09-16 2011-01-14 Partially complex modulated filter bank
HK11101942.4A HK1147837A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank
HK11101939.9A HK1147836A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank
HK11101943.3A HK1147838A1 (en) 2005-09-16 2011-02-25 Partially complex modulated filter bank

Country Status (13)

Country Link
US (3) US7917561B2 (ja)
EP (1) EP1789954B1 (ja)
JP (5) JP4783377B2 (ja)
KR (5) KR101190775B1 (ja)
CN (5) CN101031962B (ja)
AT (1) ATE382933T1 (ja)
DE (1) DE602006000399T2 (ja)
ES (1) ES2300099T3 (ja)
HK (5) HK1103935A1 (ja)
MY (1) MY141053A (ja)
PL (1) PL1789954T3 (ja)
TW (1) TWI325684B (ja)
WO (1) WO2007031171A1 (ja)

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Also Published As

Publication number Publication date
HK1147838A1 (en) 2011-08-19
CN101819779B (zh) 2011-12-14
JP2011090317A (ja) 2011-05-06
EP1789954A1 (en) 2007-05-30
JP4783377B2 (ja) 2011-09-28
JP5209034B2 (ja) 2013-06-12
KR20100038455A (ko) 2010-04-14
JP2011102981A (ja) 2011-05-26
KR101341365B1 (ko) 2013-12-13
EP1789954B1 (en) 2008-01-02
CN101819780B (zh) 2011-12-14
KR20100038234A (ko) 2010-04-13
CN101031962B (zh) 2011-12-07
JP2011070213A (ja) 2011-04-07
KR20090028845A (ko) 2009-03-19
CN101819778B (zh) 2013-07-31
KR101304963B1 (ko) 2013-09-06
CN101819779A (zh) 2010-09-01
PL1789954T3 (pl) 2008-06-30
HK1146327A1 (en) 2011-05-20
JP2008518257A (ja) 2008-05-29
KR20070088550A (ko) 2007-08-29
US7917561B2 (en) 2011-03-29
TWI325684B (en) 2010-06-01
CN101031962A (zh) 2007-09-05
US20100228555A1 (en) 2010-09-09
CN101819778A (zh) 2010-09-01
KR101190775B1 (ko) 2012-10-16
MY141053A (en) 2010-02-25
CN101777348B (zh) 2012-10-10
DE602006000399T2 (de) 2008-12-18
US8180819B2 (en) 2012-05-15
US8180818B2 (en) 2012-05-15
TW200715707A (en) 2007-04-16
US20070100612A1 (en) 2007-05-03
KR101359360B1 (ko) 2014-02-07
ATE382933T1 (de) 2008-01-15
KR20100034056A (ko) 2010-03-31
HK1147837A1 (en) 2011-08-19
JP5209033B2 (ja) 2013-06-12
ES2300099T3 (es) 2008-06-01
KR100921905B1 (ko) 2009-10-16
HK1147836A1 (en) 2011-08-19
US20110106541A1 (en) 2011-05-05
JP5209032B2 (ja) 2013-06-12
CN101777348A (zh) 2010-07-14
JP5209031B2 (ja) 2013-06-12
JP2011090316A (ja) 2011-05-06
DE602006000399D1 (de) 2008-02-14
WO2007031171A1 (en) 2007-03-22
CN101819780A (zh) 2010-09-01

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