HK1077413A1 - Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks - Google Patents

Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks

Info

Publication number
HK1077413A1
HK1077413A1 HK05109281A HK05109281A HK1077413A1 HK 1077413 A1 HK1077413 A1 HK 1077413A1 HK 05109281 A HK05109281 A HK 05109281A HK 05109281 A HK05109281 A HK 05109281A HK 1077413 A1 HK1077413 A1 HK 1077413A1
Authority
HK
Hong Kong
Prior art keywords
real
spectral envelope
reduction
valued
envelope adjustment
Prior art date
Application number
HK05109281A
Other languages
English (en)
Inventor
Kristofer Kjoerling
Lars Villemoes
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20289031&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK1077413(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Coding Tech Ab filed Critical Coding Tech Ab
Publication of HK1077413A1 publication Critical patent/HK1077413A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • 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
    • 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
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/04—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 predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/12—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being prediction coefficients
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/21—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Color Television Image Signal Generators (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Image Generation (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Studio Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Processing Of Color Television Signals (AREA)
HK05109281A 2002-09-18 2005-10-20 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks HK1077413A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0202770A SE0202770D0 (sv) 2002-09-18 2002-09-18 Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
PCT/EP2003/009485 WO2004027998A2 (en) 2002-09-18 2003-08-27 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks

Publications (1)

Publication Number Publication Date
HK1077413A1 true HK1077413A1 (en) 2006-02-10

Family

ID=20289031

Family Applications (3)

Application Number Title Priority Date Filing Date
HK05109281A HK1077413A1 (en) 2002-09-18 2005-10-20 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
HK09108857.6A HK1129169A1 (en) 2002-09-18 2009-09-25 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
HK09109639.9A HK1131473A1 (en) 2002-09-18 2009-10-19 Method for reduction of aliasing introduced by spectral envelope ajustment in real-valued filterbanks

Family Applications After (2)

Application Number Title Priority Date Filing Date
HK09108857.6A HK1129169A1 (en) 2002-09-18 2009-09-25 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
HK09109639.9A HK1131473A1 (en) 2002-09-18 2009-10-19 Method for reduction of aliasing introduced by spectral envelope ajustment in real-valued filterbanks

Country Status (18)

Country Link
US (18) US7577570B2 (da)
EP (5) EP1527517B1 (da)
JP (5) JP4328720B2 (da)
KR (3) KR100697255B1 (da)
CN (3) CN100466471C (da)
AT (3) ATE485628T1 (da)
AU (1) AU2003270114B2 (da)
CA (7) CA2924914C (da)
DE (4) DE60333872D1 (da)
DK (3) DK2239847T3 (da)
ES (5) ES2354002T3 (da)
HK (3) HK1077413A1 (da)
MX (1) MXPA05002628A (da)
NO (12) NO345377B1 (da)
SE (1) SE0202770D0 (da)
UA (1) UA79301C2 (da)
WO (1) WO2004027998A2 (da)
ZA (1) ZA200500873B (da)

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US7577570B2 (en) 2009-08-18
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DE60333872D1 (de) 2010-09-30
DK1643642T3 (da) 2010-11-29
EP2239847A3 (en) 2012-03-28
ES2440287T3 (es) 2014-01-28
NO20150891L (no) 2005-04-15
NO20180078A1 (no) 2005-04-15
US10157623B2 (en) 2018-12-18
ES2297600T3 (es) 2008-05-01
NO340385B1 (no) 2017-04-10
HK1131473A1 (en) 2010-03-05
JP5326020B2 (ja) 2013-10-30
US20190066707A1 (en) 2019-02-28
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US9990929B2 (en) 2018-06-05
NO343510B1 (no) 2019-03-25
NO345377B1 (no) 2021-01-11
MXPA05002628A (es) 2005-09-08
EP2239847A2 (en) 2010-10-13
US20200380999A1 (en) 2020-12-03
CN101505145A (zh) 2009-08-12
US8606587B2 (en) 2013-12-10
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US20180053516A1 (en) 2018-02-22
EP1986321B1 (en) 2010-10-20
US10685661B2 (en) 2020-06-16
EP1527517A2 (en) 2005-05-04
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CA2924915C (en) 2018-08-14
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NO20092677L (no) 2005-04-15
US10418040B2 (en) 2019-09-17
US20090234646A1 (en) 2009-09-17
DE60303214T2 (de) 2006-09-21
CN101505145B (zh) 2012-05-23
ATE485628T1 (de) 2010-11-15
US20190362729A1 (en) 2019-11-28
ES2354002T3 (es) 2011-03-09
CA2924913C (en) 2019-06-04
ES2350746T3 (es) 2011-01-26
US8108209B2 (en) 2012-01-31
CA2496665A1 (en) 2004-04-01
DK1986321T3 (da) 2011-01-24
EP1643642B1 (en) 2010-08-18
HK1129169A1 (en) 2009-11-20
CA2924915A1 (en) 2004-04-01
EP2239847B1 (en) 2013-10-09
US20090259479A1 (en) 2009-10-15
DE60303214D1 (de) 2006-04-06
CA3040083A1 (en) 2004-04-01
CN100466471C (zh) 2009-03-04
NO20180075A1 (no) 2005-04-15
US11423916B2 (en) 2022-08-23
UA79301C2 (en) 2007-06-11
US9847089B2 (en) 2017-12-19
US20080015868A1 (en) 2008-01-17
US20110054914A1 (en) 2011-03-03
NO20180181A1 (no) 2005-04-15
US8346566B2 (en) 2013-01-01
CN101505144A (zh) 2009-08-12
NO343508B1 (no) 2019-03-25
US9842600B2 (en) 2017-12-12
NO336930B1 (no) 2015-11-30
DE60317722D1 (de) 2008-01-03
EP1635461B1 (en) 2007-11-21
EP1986321A2 (en) 2008-10-29
KR20050054947A (ko) 2005-06-10
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US7590543B2 (en) 2009-09-15
JP2011010346A (ja) 2011-01-13
US8145475B2 (en) 2012-03-27
US20120284034A1 (en) 2012-11-08
CN1689226A (zh) 2005-10-26
EP1635461A1 (en) 2006-03-15
ZA200500873B (en) 2007-03-28
DE60317722T2 (de) 2008-09-25
KR100890201B1 (ko) 2009-03-25
JP5132627B2 (ja) 2013-01-30
CA2688871A1 (en) 2004-04-01
US20120284033A1 (en) 2012-11-08
NO20150250A1 (no) 2015-02-23
ATE478471T1 (de) 2010-09-15
CN101505144B (zh) 2012-05-16
CA2924914A1 (en) 2004-04-01
JP2009171610A (ja) 2009-07-30
NO20092676L (no) 2005-04-15
KR100697255B1 (ko) 2007-03-21
AU2003270114B2 (en) 2006-11-23
US20080010061A1 (en) 2008-01-10
JP5577187B2 (ja) 2014-08-20
EP1986321A3 (en) 2009-04-01
ES2256773T3 (es) 2006-07-16

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