DK1367566T3 - Forbedring af kildekodning ved anvendelse af spektralbåndreplikation - Google Patents

Forbedring af kildekodning ved anvendelse af spektralbåndreplikation

Info

Publication number
DK1367566T3
DK1367566T3 DK03020094T DK03020094T DK1367566T3 DK 1367566 T3 DK1367566 T3 DK 1367566T3 DK 03020094 T DK03020094 T DK 03020094T DK 03020094 T DK03020094 T DK 03020094T DK 1367566 T3 DK1367566 T3 DK 1367566T3
Authority
DK
Denmark
Prior art keywords
codec
source coding
band replication
combination
spectral band
Prior art date
Application number
DK03020094T
Other languages
English (en)
Inventor
Lars Liljeryd
Fredrik Henn
Per Ekstrand
Kristofer Kjoerling
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
Priority claimed from SE9702213A external-priority patent/SE9702213D0/xx
Priority claimed from SE9704634A external-priority patent/SE9704634D0/xx
Application filed by Coding Tech Ab filed Critical Coding Tech Ab
Application granted granted Critical
Publication of DK1367566T3 publication Critical patent/DK1367566T3/da

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)
  • Spectrometry And Color Measurement (AREA)
  • Luminescent Compositions (AREA)
  • Pyridine Compounds (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Cosmetics (AREA)
DK03020094T 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation DK1367566T3 (da)

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 (1)

Publication Number Publication Date
DK1367566T3 true DK1367566T3 (da) 2005-10-10

Family

ID=27355877

Family Applications (2)

Application Number Title Priority Date Filing Date
DK03020094T DK1367566T3 (da) 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation
DK98921697T DK0940015T3 (da) 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation

Family Applications After (1)

Application Number Title Priority Date Filing Date
DK98921697T DK0940015T3 (da) 1997-06-10 1998-06-09 Forbedring af kildekodning ved anvendelse af spektralbåndreplikation

Country Status (14)

Country Link
US (4) US6680972B1 (da)
EP (2) EP0940015B1 (da)
JP (2) JP3871347B2 (da)
CN (2) CN1206816C (da)
AT (2) ATE303679T1 (da)
AU (1) AU7446598A (da)
BR (1) BR9805989B1 (da)
DE (2) DE69831435T2 (da)
DK (2) DK1367566T3 (da)
ES (2) ES2247466T3 (da)
HK (2) HK1030843A1 (da)
PT (2) PT1367566E (da)
SE (1) SE512719C2 (da)
WO (1) WO1998057436A2 (da)

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EP0940015A1 (en) 1999-09-08
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DE69831435T2 (de) 2006-06-14
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DE69821089D1 (de) 2004-02-19
SE9800268L (sv) 1998-12-11
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