ATE323935T1 - Adpcm sprachkodiersystem mit phasenfaltungs und - entfaltungsfiltern - Google Patents

Adpcm sprachkodiersystem mit phasenfaltungs und - entfaltungsfiltern

Info

Publication number
ATE323935T1
ATE323935T1 AT02708594T AT02708594T ATE323935T1 AT E323935 T1 ATE323935 T1 AT E323935T1 AT 02708594 T AT02708594 T AT 02708594T AT 02708594 T AT02708594 T AT 02708594T AT E323935 T1 ATE323935 T1 AT E323935T1
Authority
AT
Austria
Prior art keywords
phase
speech
adpcm
encoder
processor
Prior art date
Application number
AT02708594T
Other languages
English (en)
Inventor
Ercan F Gigi
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE323935T1 publication Critical patent/ATE323935T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • 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
    • 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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
AT02708594T 2001-04-09 2002-03-27 Adpcm sprachkodiersystem mit phasenfaltungs und - entfaltungsfiltern ATE323935T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01201301 2001-04-09

Publications (1)

Publication Number Publication Date
ATE323935T1 true ATE323935T1 (de) 2006-05-15

Family

ID=8180123

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02708594T ATE323935T1 (de) 2001-04-09 2002-03-27 Adpcm sprachkodiersystem mit phasenfaltungs und - entfaltungsfiltern

Country Status (9)

Country Link
US (1) US20020173949A1 (de)
EP (1) EP1395982B1 (de)
JP (1) JP2004519736A (de)
KR (1) KR20030009517A (de)
CN (1) CN1221941C (de)
AT (1) ATE323935T1 (de)
DE (1) DE60210766T2 (de)
ES (1) ES2261637T3 (de)
WO (1) WO2002082426A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI226035B (en) * 2003-10-16 2005-01-01 Elan Microelectronics Corp Method and system improving step adaptation of ADPCM voice coding
EP1846920B1 (de) * 2005-01-31 2017-04-19 Skype Verfahren zur erzeugung von verdeckungsdatenrahmen in einem kommunikationssystem
TWI285568B (en) * 2005-02-02 2007-08-21 Dowa Mining Co Powder of silver particles and process
RU2008105555A (ru) * 2005-07-14 2009-08-20 Конинклейке Филипс Электроникс Н.В. (Nl) Синтез аудиосигнала
CN102257563B (zh) 2009-04-08 2013-09-25 弗劳恩霍夫应用研究促进协会 使用相位值平滑对下混频音频信号进行上混频的装置和方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5558612A (en) * 1978-10-26 1980-05-01 Kokusai Denshin Denwa Co Ltd <Kdd> Delay circuit
JPS587935A (ja) * 1981-07-07 1983-01-17 Kokusai Denshin Denwa Co Ltd <Kdd> トランスバーサル形スミアデスミアフイルタ
NL8700075A (nl) * 1987-01-14 1988-08-01 Philips Nv Datatransmissiestelsel voorzien van versmeringsfilters.
US5231484A (en) * 1991-11-08 1993-07-27 International Business Machines Corporation Motion video compression system with adaptive bit allocation and quantization
US5511095A (en) * 1992-04-15 1996-04-23 Sanyo Electric Co., Ltd. Audio signal coding and decoding device
US5754974A (en) * 1995-02-22 1998-05-19 Digital Voice Systems, Inc Spectral magnitude representation for multi-band excitation speech coders
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
WO1999050828A1 (en) * 1998-03-30 1999-10-07 Voxware, Inc. Low-complexity, low-delay, scalable and embedded speech and audio coding with adaptive frame loss concealment

Also Published As

Publication number Publication date
DE60210766D1 (de) 2006-05-24
ES2261637T3 (es) 2006-11-16
CN1221941C (zh) 2005-10-05
US20020173949A1 (en) 2002-11-21
WO2002082426A1 (en) 2002-10-17
CN1461469A (zh) 2003-12-10
EP1395982A1 (de) 2004-03-10
DE60210766T2 (de) 2007-02-08
KR20030009517A (ko) 2003-01-29
EP1395982B1 (de) 2006-04-19
JP2004519736A (ja) 2004-07-02

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Legal Events

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