ATE257987T1 - Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation - Google Patents

Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation

Info

Publication number
ATE257987T1
ATE257987T1 AT98921697T AT98921697T ATE257987T1 AT E257987 T1 ATE257987 T1 AT E257987T1 AT 98921697 T AT98921697 T AT 98921697T AT 98921697 T AT98921697 T AT 98921697T AT E257987 T1 ATE257987 T1 AT E257987T1
Authority
AT
Austria
Prior art keywords
codec
band replication
improvement
combination
spectral band
Prior art date
Application number
AT98921697T
Other languages
English (en)
Inventor
Lars Gustaf Liljeryd
Per Rune Albin Ekstrand
Lars Fredrik Henn
Hans Magnus Kristofe Kjoerling
Original Assignee
Coding Technologies Sweden 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
Priority claimed from SE9702213A external-priority patent/SE9702213D0/xx
Priority claimed from SE9704634A external-priority patent/SE9704634D0/xx
Application filed by Coding Technologies Sweden Ab filed Critical Coding Technologies Sweden Ab
Application granted granted Critical
Publication of ATE257987T1 publication Critical patent/ATE257987T1/de

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)
  • Luminescent Compositions (AREA)
  • Pyridine Compounds (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Cosmetics (AREA)
AT98921697T 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation ATE257987T1 (de)

Applications Claiming Priority (4)

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
PCT/IB1998/000893 WO1998057436A2 (en) 1997-06-10 1998-06-09 Source coding enhancement using spectral-band replication

Publications (1)

Publication Number Publication Date
ATE257987T1 true ATE257987T1 (de) 2004-01-15

Family

ID=27355877

Family Applications (2)

Application Number Title Priority Date Filing Date
AT03020094T ATE303679T1 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation
AT98921697T ATE257987T1 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT03020094T ATE303679T1 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation

Country Status (13)

Country Link
US (4) US6680972B1 (de)
EP (2) EP0940015B1 (de)
JP (2) JP3871347B2 (de)
CN (2) CN1206816C (de)
AT (2) ATE303679T1 (de)
AU (1) AU7446598A (de)
BR (1) BR9805989B1 (de)
DE (2) DE69821089T2 (de)
DK (2) DK0940015T3 (de)
ES (2) ES2247466T3 (de)
PT (2) PT1367566E (de)
SE (1) SE512719C2 (de)
WO (1) WO1998057436A2 (de)

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ATE303679T1 (de) 2005-09-15
US7283955B2 (en) 2007-10-16
DE69821089D1 (de) 2004-02-19
US20040125878A1 (en) 2004-07-01
SE9800268D0 (sv) 1998-01-30
BR9805989A (pt) 1999-08-31
JP2005173607A (ja) 2005-06-30
EP1367566A2 (de) 2003-12-03
JP3871347B2 (ja) 2007-01-24
WO1998057436A2 (en) 1998-12-17
PT1367566E (pt) 2005-11-30
BR9805989B1 (pt) 2009-12-01
CN1206816C (zh) 2005-06-15
US6680972B1 (en) 2004-01-20
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JP2001521648A (ja) 2001-11-06
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AU7446598A (en) 1998-12-30
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