DE69821089D1 - Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation - Google Patents

Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation

Info

Publication number
DE69821089D1
DE69821089D1 DE69821089T DE69821089T DE69821089D1 DE 69821089 D1 DE69821089 D1 DE 69821089D1 DE 69821089 T DE69821089 T DE 69821089T DE 69821089 T DE69821089 T DE 69821089T DE 69821089 D1 DE69821089 D1 DE 69821089D1
Authority
DE
Germany
Prior art keywords
codec
band replication
combination
spectral band
perceptual quality
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69821089T
Other languages
English (en)
Other versions
DE69821089T2 (de
Inventor
Gustaf Liljeryd
Rune Ekstrand
Fredrik Henn
Magnus Kjoerling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolby International AB
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 DE69821089D1 publication Critical patent/DE69821089D1/de
Publication of DE69821089T2 publication Critical patent/DE69821089T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
DE69821089T 1997-06-10 1998-06-09 Verbesserung von quellenkodierung unter verwendung von spektralbandreplikation Expired - Lifetime DE69821089T2 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
SE9702213 1997-06-10
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
SE9704634 1997-12-12
SE9800268 1998-01-30
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 (2)

Publication Number Publication Date
DE69821089D1 true DE69821089D1 (de) 2004-02-19
DE69821089T2 DE69821089T2 (de) 2004-11-11

Family

ID=27355877

Family Applications (2)

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 After (1)

Application Number Title Priority Date Filing Date
DE69831435T Expired - Lifetime DE69831435T2 (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) EP0940015B1 (de)
JP (2) JP3871347B2 (de)
CN (2) CN1308916C (de)
AT (2) ATE257987T1 (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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DE69831435D1 (de) 2005-10-06
DE69821089T2 (de) 2004-11-11
CN1272259A (zh) 2000-11-01
AU7446598A (en) 1998-12-30
DE69831435T2 (de) 2006-06-14
CN1308916C (zh) 2007-04-04
ATE257987T1 (de) 2004-01-15
DK1367566T3 (da) 2005-10-10
EP1367566B1 (de) 2005-08-31
PT940015E (pt) 2004-06-30
EP0940015B1 (de) 2004-01-14
JP2001521648A (ja) 2001-11-06
WO1998057436A3 (en) 2000-02-10
BR9805989A (pt) 1999-08-31
BR9805989B1 (pt) 2009-12-01
EP0940015A1 (de) 1999-09-08
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CN1629937A (zh) 2005-06-22
US20040078194A1 (en) 2004-04-22
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ATE303679T1 (de) 2005-09-15
CN1206816C (zh) 2005-06-15
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SE9800268D0 (sv) 1998-01-30
US7283955B2 (en) 2007-10-16
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US6680972B1 (en) 2004-01-20
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