DE69425808T2 - Vorrichtung zur Kompression und Expansion der Bandbreite eines Sprachsignals, Verfahren zur Übertragung eines komprimierten Sprachsignals sowie Verfahren zu dessen Wiedergabe - Google Patents

Vorrichtung zur Kompression und Expansion der Bandbreite eines Sprachsignals, Verfahren zur Übertragung eines komprimierten Sprachsignals sowie Verfahren zu dessen Wiedergabe

Info

Publication number
DE69425808T2
DE69425808T2 DE69425808T DE69425808T DE69425808T2 DE 69425808 T2 DE69425808 T2 DE 69425808T2 DE 69425808 T DE69425808 T DE 69425808T DE 69425808 T DE69425808 T DE 69425808T DE 69425808 T2 DE69425808 T2 DE 69425808T2
Authority
DE
Germany
Prior art keywords
speech signal
reproduction
compressing
bandwidth
expanding
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 - Fee Related
Application number
DE69425808T
Other languages
English (en)
Other versions
DE69425808D1 (de
Inventor
Yasushi Kudo
Yoshiro Kokuryo
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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
Application filed by Hitachi Denshi KK filed Critical Hitachi Denshi KK
Application granted granted Critical
Publication of DE69425808D1 publication Critical patent/DE69425808D1/de
Publication of DE69425808T2 publication Critical patent/DE69425808T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69425808T 1993-12-06 1994-12-02 Vorrichtung zur Kompression und Expansion der Bandbreite eines Sprachsignals, Verfahren zur Übertragung eines komprimierten Sprachsignals sowie Verfahren zu dessen Wiedergabe Expired - Fee Related DE69425808T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5305460A JPH07160299A (ja) 1993-12-06 1993-12-06 音声信号帯域圧縮伸張装置並びに音声信号の帯域圧縮伝送方式及び再生方式

Publications (2)

Publication Number Publication Date
DE69425808D1 DE69425808D1 (de) 2000-10-12
DE69425808T2 true DE69425808T2 (de) 2001-04-12

Family

ID=17945417

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69425808T Expired - Fee Related DE69425808T2 (de) 1993-12-06 1994-12-02 Vorrichtung zur Kompression und Expansion der Bandbreite eines Sprachsignals, Verfahren zur Übertragung eines komprimierten Sprachsignals sowie Verfahren zu dessen Wiedergabe

Country Status (4)

Country Link
US (1) US5579434A (de)
EP (1) EP0657873B1 (de)
JP (1) JPH07160299A (de)
DE (1) DE69425808T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864790A (en) * 1997-03-26 1999-01-26 Intel Corporation Method for enhancing 3-D localization of speech
EP0878790A1 (de) * 1997-05-15 1998-11-18 Hewlett-Packard Company Sprachkodiersystem und Verfahren
SE9903553D0 (sv) 1999-01-27 1999-10-01 Lars Liljeryd Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
US7742927B2 (en) * 2000-04-18 2010-06-22 France Telecom Spectral enhancing method and device
SE0001926D0 (sv) 2000-05-23 2000-05-23 Lars Liljeryd Improved spectral translation/folding in the subband domain
US20020016698A1 (en) * 2000-06-26 2002-02-07 Toshimichi Tokuda Device and method for audio frequency range expansion
US7113522B2 (en) * 2001-01-24 2006-09-26 Qualcomm, Incorporated Enhanced conversion of wideband signals to narrowband signals
US7137003B2 (en) 2001-02-27 2006-11-14 Qualcomm Incorporated Subscriber identity module verification during power management
US7757094B2 (en) 2001-02-27 2010-07-13 Qualcomm Incorporated Power management for subscriber identity module
US6879955B2 (en) * 2001-06-29 2005-04-12 Microsoft Corporation Signal modification based on continuous time warping for low bit rate CELP coding
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
ES2237706T3 (es) 2001-11-29 2005-08-01 Coding Technologies Ab Reconstruccion de componentes de alta frecuencia.
US20030187663A1 (en) * 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
WO2006025313A1 (ja) * 2004-08-31 2006-03-09 Matsushita Electric Industrial Co., Ltd. 音声符号化装置、音声復号化装置、通信装置及び音声符号化方法
WO2008081920A1 (ja) * 2007-01-05 2008-07-10 Kyushu University, National University Corporation 音声強調処理装置
JP5046233B2 (ja) * 2007-01-05 2012-10-10 国立大学法人九州大学 音声強調処理装置
US8688441B2 (en) * 2007-11-29 2014-04-01 Motorola Mobility Llc Method and apparatus to facilitate provision and use of an energy value to determine a spectral envelope shape for out-of-signal bandwidth content
US8433582B2 (en) * 2008-02-01 2013-04-30 Motorola Mobility Llc Method and apparatus for estimating high-band energy in a bandwidth extension system
US20090201983A1 (en) * 2008-02-07 2009-08-13 Motorola, Inc. Method and apparatus for estimating high-band energy in a bandwidth extension system
US8463412B2 (en) * 2008-08-21 2013-06-11 Motorola Mobility Llc Method and apparatus to facilitate determining signal bounding frequencies
US8463599B2 (en) * 2009-02-04 2013-06-11 Motorola Mobility Llc Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder
JP6680029B2 (ja) * 2016-03-24 2020-04-15 ヤマハ株式会社 音響処理方法および音響処理装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8400728A (nl) * 1984-03-07 1985-10-01 Philips Nv Digitale spraakcoder met basisband residucodering.
DE3683767D1 (de) * 1986-04-30 1992-03-12 Ibm Sprachkodierungsverfahren und einrichtung zur ausfuehrung dieses verfahrens.
US5060269A (en) * 1989-05-18 1991-10-22 General Electric Company Hybrid switched multi-pulse/stochastic speech coding technique

Also Published As

Publication number Publication date
EP0657873A2 (de) 1995-06-14
EP0657873B1 (de) 2000-09-06
EP0657873A3 (de) 1997-06-25
DE69425808D1 (de) 2000-10-12
US5579434A (en) 1996-11-26
JPH07160299A (ja) 1995-06-23

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Legal Events

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8339 Ceased/non-payment of the annual fee