HK1082092A1 - Audio decoding apparatus and decoding method - Google Patents

Audio decoding apparatus and decoding method

Info

Publication number
HK1082092A1
HK1082092A1 HK06102057A HK06102057A HK1082092A1 HK 1082092 A1 HK1082092 A1 HK 1082092A1 HK 06102057 A HK06102057 A HK 06102057A HK 06102057 A HK06102057 A HK 06102057A HK 1082092 A1 HK1082092 A1 HK 1082092A1
Authority
HK
Hong Kong
Prior art keywords
energy
real
calculations
correcting
complex
Prior art date
Application number
HK06102057A
Other languages
English (en)
Inventor
Nomura Toshiyuki
Shimada Osamu
Takamizawa Yuichiro
Serizawa Masahiro
Tanaka Naoya
Tsushima Mineo
Norimatsu Takeshi
Chong Kok Seng
Kuah Kim Hann
Neo Sua Hong
Original Assignee
Nec Corp
Panasonic Corp
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 Nec Corp, Panasonic Corp filed Critical Nec Corp
Publication of HK1082092A1 publication Critical patent/HK1082092A1/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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stereophonic System (AREA)
HK06102057A 2002-07-19 2006-02-17 Audio decoding apparatus and decoding method HK1082092A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002210945 2002-07-19
JP2002273010 2002-09-19
PCT/JP2003/007962 WO2004010415A1 (ja) 2002-07-19 2003-06-24 オーディオ復号装置と復号方法およびプログラム

Publications (1)

Publication Number Publication Date
HK1082092A1 true HK1082092A1 (en) 2006-05-26

Family

ID=30772215

Family Applications (1)

Application Number Title Priority Date Filing Date
HK06102057A HK1082092A1 (en) 2002-07-19 2006-02-17 Audio decoding apparatus and decoding method

Country Status (13)

Country Link
US (2) US7555434B2 (xx)
EP (2) EP1439524B1 (xx)
JP (1) JP3579047B2 (xx)
KR (1) KR100602975B1 (xx)
CN (1) CN1328707C (xx)
AT (1) ATE428167T1 (xx)
AU (1) AU2003244168A1 (xx)
BR (2) BRPI0311601B8 (xx)
CA (1) CA2453814C (xx)
DE (1) DE60327039D1 (xx)
HK (1) HK1082092A1 (xx)
TW (1) TWI268665B (xx)
WO (1) WO2004010415A1 (xx)

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US7941319B2 (en) 2011-05-10
CN1328707C (zh) 2007-07-25
AU2003244168A1 (en) 2004-02-09
EP2019391A2 (en) 2009-01-28
TWI268665B (en) 2006-12-11
JP3579047B2 (ja) 2004-10-20
CN1669073A (zh) 2005-09-14
BR0311601A (pt) 2005-02-22
WO2004010415A1 (ja) 2004-01-29
DE60327039D1 (de) 2009-05-20
TW200405673A (en) 2004-04-01
US20090259478A1 (en) 2009-10-15
US7555434B2 (en) 2009-06-30
EP2019391B1 (en) 2013-01-16
EP1439524A1 (en) 2004-07-21
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US20050171785A1 (en) 2005-08-04
KR20050010744A (ko) 2005-01-28
EP2019391A3 (en) 2009-04-01
BRPI0311601B8 (pt) 2018-02-14
AU2003244168A8 (en) 2004-02-09
CA2453814A1 (en) 2004-01-19
EP1439524A4 (en) 2005-06-08
ATE428167T1 (de) 2009-04-15
EP1439524B1 (en) 2009-04-08
BRPI0311601B1 (pt) 2017-12-12
KR100602975B1 (ko) 2006-07-20

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