SE9800268D0 - A method and a device for bit-rate reduction using synthetic bandwidth expansion - Google Patents

A method and a device for bit-rate reduction using synthetic bandwidth expansion

Info

Publication number
SE9800268D0
SE9800268D0 SE9800268A SE9800268A SE9800268D0 SE 9800268 D0 SE9800268 D0 SE 9800268D0 SE 9800268 A SE9800268 A SE 9800268A SE 9800268 A SE9800268 A SE 9800268A SE 9800268 D0 SE9800268 D0 SE 9800268D0
Authority
SE
Sweden
Prior art keywords
codec
bit
combination
perceptual quality
rate reduction
Prior art date
Application number
SE9800268A
Other languages
English (en)
Other versions
SE512719C2 (sv
SE9800268L (sv
Inventor
Lars Liljeryd
Original Assignee
Lars Liljeryd
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
Priority claimed from SE9702213A external-priority patent/SE9702213D0/sv
Priority claimed from SE9704634A external-priority patent/SE9704634D0/sv
Application filed by Lars Liljeryd filed Critical Lars Liljeryd
Priority to SE9800268A priority Critical patent/SE512719C2/sv
Publication of SE9800268D0 publication Critical patent/SE9800268D0/sv
Priority to ES98921697T priority patent/ES2213901T3/es
Priority to DE69821089T priority patent/DE69821089T2/de
Priority to EP98921697A priority patent/EP0940015B1/en
Priority to CNB988007924A priority patent/CN1206816C/zh
Priority to AU74465/98A priority patent/AU7446598A/en
Priority to DK98921697T priority patent/DK0940015T3/da
Priority to DK03020094T priority patent/DK1367566T3/da
Priority to JP50196299A priority patent/JP3871347B2/ja
Priority to US09/230,799 priority patent/US6680972B1/en
Priority to AT03020094T priority patent/ATE303679T1/de
Priority to ES03020094T priority patent/ES2247466T3/es
Priority to PCT/IB1998/000893 priority patent/WO1998057436A2/en
Priority to PT03020094T priority patent/PT1367566E/pt
Priority to RU99104814/09A priority patent/RU2256293C2/ru
Priority to PT98921697T priority patent/PT940015E/pt
Priority to DE69831435T priority patent/DE69831435T2/de
Priority to BRPI9805989-0A priority patent/BR9805989B1/pt
Priority to CNB2004101000787A priority patent/CN1308916C/zh
Priority to AT98921697T priority patent/ATE257987T1/de
Priority to EP03020094A priority patent/EP1367566B1/en
Publication of SE9800268L publication Critical patent/SE9800268L/sv
Publication of SE512719C2 publication Critical patent/SE512719C2/sv
Priority to HK01101733A priority patent/HK1030843A1/xx
Priority to US10/680,224 priority patent/US6925116B2/en
Priority to US10/681,105 priority patent/US7328162B2/en
Priority to US10/682,030 priority patent/US7283955B2/en
Priority to HK04100528A priority patent/HK1057815A1/xx
Priority to JP2004355011A priority patent/JP4220461B2/ja

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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Luminescent Compositions (AREA)
  • Pyridine Compounds (AREA)
  • Cosmetics (AREA)
SE9800268A 1997-06-10 1998-01-30 En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion SE512719C2 (sv)

Priority Applications (27)

Application Number Priority Date Filing Date Title
SE9800268A SE512719C2 (sv) 1997-06-10 1998-01-30 En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
CNB2004101000787A CN1308916C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码
AT98921697T ATE257987T1 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation
EP03020094A EP1367566B1 (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication
PCT/IB1998/000893 WO1998057436A2 (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication
RU99104814/09A RU2256293C2 (ru) 1997-06-10 1998-06-09 Усовершенствование исходного кодирования с использованием дублирования спектральной полосы
EP98921697A EP0940015B1 (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication
CNB988007924A CN1206816C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码
AU74465/98A AU7446598A (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication
DK98921697T DK0940015T3 (da) 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation
DK03020094T DK1367566T3 (da) 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation
JP50196299A JP3871347B2 (ja) 1997-06-10 1998-06-09 スペクトル帯域複製を用いた原始コーディングの強化
US09/230,799 US6680972B1 (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication
AT03020094T ATE303679T1 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation
ES03020094T ES2247466T3 (es) 1997-06-10 1998-06-09 Mejora de codificacion de la fuente utilizando replicacion de la banda espectral.
ES98921697T ES2213901T3 (es) 1997-06-10 1998-06-09 Mejora de codificacion de la fuente utilizando la replica de la banda espectral.
PT03020094T PT1367566E (pt) 1997-06-10 1998-06-09 Melhoria da codificacao na fonte utilizando-se a reproducao da banda espectral
DE69821089T DE69821089T2 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation
PT98921697T PT940015E (pt) 1997-06-10 1998-06-09 Melhoria da codificacao na fonte utilizando-se a reproducao da banda espectral
DE69831435T DE69831435T2 (de) 1997-06-10 1998-06-09 Verbesserung von Quellenkodierung unter Verwendung von Spektralbandreplikation
BRPI9805989-0A BR9805989B1 (pt) 1997-06-10 1998-06-09 método e aparelho para decodificar um sinal codificado.
HK01101733A HK1030843A1 (en) 1997-06-10 2001-03-12 Source coding enhancement using spectral-band replication.
US10/680,224 US6925116B2 (en) 1997-06-10 2003-10-08 Source coding enhancement using spectral-band replication
US10/681,105 US7328162B2 (en) 1997-06-10 2003-10-09 Source coding enhancement using spectral-band replication
US10/682,030 US7283955B2 (en) 1997-06-10 2003-10-10 Source coding enhancement using spectral-band replication
HK04100528A HK1057815A1 (en) 1997-06-10 2004-01-27 Source coding enhancement using spectral-band replication.
JP2004355011A JP4220461B2 (ja) 1997-06-10 2004-12-08 時間的に離散した音声信号のアップサンプリングした信号を発生する方法と装置

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9702213A SE9702213D0 (sv) 1997-06-10 1997-06-10 A method and a device for bit-rate reduction using synthetic bandwidth expansion
SE9704634A SE9704634D0 (sv) 1997-12-12 1997-12-12 Synthetic bandwidth expansion of audio signals
SE9800268A SE512719C2 (sv) 1997-06-10 1998-01-30 En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion

Publications (3)

Publication Number Publication Date
SE9800268D0 true SE9800268D0 (sv) 1998-01-30
SE9800268L SE9800268L (sv) 1998-12-11
SE512719C2 SE512719C2 (sv) 2000-05-02

Family

ID=27355877

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9800268A SE512719C2 (sv) 1997-06-10 1998-01-30 En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion

Country Status (14)

Country Link
US (4) US6680972B1 (sv)
EP (2) EP0940015B1 (sv)
JP (2) JP3871347B2 (sv)
CN (2) CN1308916C (sv)
AT (2) ATE303679T1 (sv)
AU (1) AU7446598A (sv)
BR (1) BR9805989B1 (sv)
DE (2) DE69831435T2 (sv)
DK (2) DK1367566T3 (sv)
ES (2) ES2247466T3 (sv)
HK (2) HK1030843A1 (sv)
PT (2) PT1367566E (sv)
SE (1) SE512719C2 (sv)
WO (1) WO1998057436A2 (sv)

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