CN1308916C - 采用频带复现增强源编码 - Google Patents

采用频带复现增强源编码 Download PDF

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Publication number
CN1308916C
CN1308916C CNB2004101000787A CN200410100078A CN1308916C CN 1308916 C CN1308916 C CN 1308916C CN B2004101000787 A CNB2004101000787 A CN B2004101000787A CN 200410100078 A CN200410100078 A CN 200410100078A CN 1308916 C CN1308916 C CN 1308916C
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China
Prior art keywords
channel
signal
frequency band
version
sound signal
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Expired - Lifetime
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CNB2004101000787A
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English (en)
Chinese (zh)
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CN1629937A (zh
Inventor
拉斯·古斯塔夫·里杰利德
泊·鲁那·阿尔宾·埃克斯兰德
拉斯·夫莱基克·汉恩
汉斯·玛格那斯·克里斯托弗·克乔林
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Dolby International 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 CN1629937A publication Critical patent/CN1629937A/zh
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Publication of CN1308916C publication Critical patent/CN1308916C/zh
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    • 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

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  • 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)
CNB2004101000787A 1997-06-10 1998-06-09 采用频带复现增强源编码 Expired - Lifetime CN1308916C (zh)

Applications Claiming Priority (6)

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
SE97022131 1997-06-10
SE97046346 1997-12-12
SE9704634A SE9704634D0 (sv) 1997-12-12 1997-12-12 Synthetic bandwidth expansion of audio signals
SE98002686 1998-01-30
SE9800268A SE512719C2 (sv) 1997-06-10 1998-01-30 En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CNB988007924A Division CN1206816C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码

Publications (2)

Publication Number Publication Date
CN1629937A CN1629937A (zh) 2005-06-22
CN1308916C true CN1308916C (zh) 2007-04-04

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ID=27355877

Family Applications (2)

Application Number Title Priority Date Filing Date
CNB2004101000787A Expired - Lifetime CN1308916C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码
CNB988007924A Expired - Lifetime CN1206816C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码

Family Applications After (1)

Application Number Title Priority Date Filing Date
CNB988007924A Expired - Lifetime CN1206816C (zh) 1997-06-10 1998-06-09 采用频带复现增强源编码

Country Status (13)

Country Link
US (4) US6680972B1 (https=)
EP (2) EP1367566B1 (https=)
JP (2) JP3871347B2 (https=)
CN (2) CN1308916C (https=)
AT (2) ATE257987T1 (https=)
AU (1) AU7446598A (https=)
BR (1) BR9805989B1 (https=)
DE (2) DE69821089T2 (https=)
DK (2) DK0940015T3 (https=)
ES (2) ES2213901T3 (https=)
PT (2) PT940015E (https=)
SE (1) SE512719C2 (https=)
WO (1) WO1998057436A2 (https=)

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