DE69831435T2 - Verbesserung von Quellenkodierung unter Verwendung von Spektralbandreplikation - Google Patents

Verbesserung von Quellenkodierung unter Verwendung von Spektralbandreplikation Download PDF

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Publication number
DE69831435T2
DE69831435T2 DE69831435T DE69831435T DE69831435T2 DE 69831435 T2 DE69831435 T2 DE 69831435T2 DE 69831435 T DE69831435 T DE 69831435T DE 69831435 T DE69831435 T DE 69831435T DE 69831435 T2 DE69831435 T2 DE 69831435T2
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Prior art keywords
codec
source coding
band replication
improvement
combination
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DE69831435T
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DE69831435D1 (de
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Lars Liljeryd
Per Ekstrand
Fredrik Henn
Kristofer Kjoerling
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Coding Technologies Sweden AB
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Coding Technologies Sweden AB
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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
Publication of DE69831435D1 publication Critical patent/DE69831435D1/de
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Publication of DE69831435T2 publication Critical patent/DE69831435T2/de
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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
DE69831435T 1997-06-10 1998-06-09 Verbesserung von Quellenkodierung unter Verwendung von Spektralbandreplikation Expired - Lifetime DE69831435T2 (de)

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 (2)

Publication Number Publication Date
DE69831435D1 DE69831435D1 (de) 2005-10-06
DE69831435T2 true DE69831435T2 (de) 2006-06-14

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Application Number Title Priority Date Filing Date
DE69821089T Expired - Lifetime DE69821089T2 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation
DE69831435T Expired - Lifetime DE69831435T2 (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
DE69821089T Expired - Lifetime DE69821089T2 (de) 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation

Country Status (14)

Country Link
US (4) US6680972B1 (de)
EP (2) EP1367566B1 (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) DK1367566T3 (de)
ES (2) ES2247466T3 (de)
HK (2) HK1030843A1 (de)
PT (2) PT1367566E (de)
SE (1) SE512719C2 (de)
WO (1) WO1998057436A2 (de)

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JP4220461B2 (ja) 2009-02-04
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DE69821089D1 (de) 2004-02-19
CN1206816C (zh) 2005-06-15
US20040078194A1 (en) 2004-04-22
EP0940015A1 (de) 1999-09-08
WO1998057436A2 (en) 1998-12-17
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US6680972B1 (en) 2004-01-20
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