FI97580B - Rajoitetun stokastisen herätteen koodaus - Google Patents

Rajoitetun stokastisen herätteen koodaus

Info

Publication number
FI97580B
FI97580B FI904303A FI904303A FI97580B FI 97580 B FI97580 B FI 97580B FI 904303 A FI904303 A FI 904303A FI 904303 A FI904303 A FI 904303A FI 97580 B FI97580 B FI 97580B
Authority
FI
Finland
Prior art keywords
excitation
term
stochastic
long
level
Prior art date
Application number
FI904303A
Other languages
English (en)
Swedish (sv)
Other versions
FI904303A0 (fi
FI97580C (fi
Inventor
Yair Shoham
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Publication of FI904303A0 publication Critical patent/FI904303A0/fi
Publication of FI97580B publication Critical patent/FI97580B/fi
Application granted granted Critical
Publication of FI97580C publication Critical patent/FI97580C/fi

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0003—Backward prediction of gain
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Filters That Use Time-Delay Elements (AREA)
FI904303A 1989-09-01 1990-08-31 Rajoitetun stokastisen herätteen koodaus FI97580C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40200689A 1989-09-01 1989-09-01
US40200689 1989-09-01

Publications (3)

Publication Number Publication Date
FI904303A0 FI904303A0 (fi) 1990-08-31
FI97580B true FI97580B (fi) 1996-09-30
FI97580C FI97580C (fi) 1997-01-10

Family

ID=23590155

Family Applications (1)

Application Number Title Priority Date Filing Date
FI904303A FI97580C (fi) 1989-09-01 1990-08-31 Rajoitetun stokastisen herätteen koodaus

Country Status (8)

Country Link
US (2) US5481642A (fi)
EP (1) EP0415675B1 (fi)
JP (1) JP3062226B2 (fi)
KR (1) KR100204740B1 (fi)
CA (1) CA2021514C (fi)
DE (1) DE69017801T2 (fi)
FI (1) FI97580C (fi)
NO (1) NO303475B1 (fi)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2021514C (en) * 1989-09-01 1998-12-15 Yair Shoham Constrained-stochastic-excitation coding
JPH04264597A (ja) * 1991-02-20 1992-09-21 Fujitsu Ltd 音声符号化装置および音声復号装置
US5434947A (en) * 1993-02-23 1995-07-18 Motorola Method for generating a spectral noise weighting filter for use in a speech coder
WO1994025959A1 (en) * 1993-04-29 1994-11-10 Unisearch Limited Use of an auditory model to improve quality or lower the bit rate of speech synthesis systems
US5642464A (en) * 1995-05-03 1997-06-24 Northern Telecom Limited Methods and apparatus for noise conditioning in digital speech compression systems using linear predictive coding
US5668925A (en) * 1995-06-01 1997-09-16 Martin Marietta Corporation Low data rate speech encoder with mixed excitation
US5649051A (en) * 1995-06-01 1997-07-15 Rothweiler; Joseph Harvey Constant data rate speech encoder for limited bandwidth path
TW317051B (fi) * 1996-02-15 1997-10-01 Philips Electronics Nv
CA2185053C (en) * 1996-06-24 2002-04-16 Frank B. Norman Interactive reverse channel for direct broadcast satellite system
US5839098A (en) 1996-12-19 1998-11-17 Lucent Technologies Inc. Speech coder methods and systems
FR2761512A1 (fr) * 1997-03-25 1998-10-02 Philips Electronics Nv Dispositif de generation de bruit de confort et codeur de parole incluant un tel dispositif
EP1686563A3 (en) * 1997-12-24 2007-02-07 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for speech decoding
JP3842432B2 (ja) * 1998-04-20 2006-11-08 株式会社東芝 ベクトル量子化方法
DE19845888A1 (de) * 1998-10-06 2000-05-11 Bosch Gmbh Robert Verfahren zur Codierung oder Decodierung von Sprachsignalabtastwerten sowie Coder bzw. Decoder
GB2348342B (en) * 1999-03-25 2004-01-21 Roke Manor Research Improvements in or relating to telecommunication systems
FI116992B (fi) 1999-07-05 2006-04-28 Nokia Corp Menetelmät, järjestelmä ja laitteet audiosignaalin koodauksen ja siirron tehostamiseksi
US6721701B1 (en) * 1999-09-20 2004-04-13 Lucent Technologies Inc. Method and apparatus for sound discrimination
DE10120231A1 (de) * 2001-04-19 2002-10-24 Deutsche Telekom Ag Verfahren und Anordnung zur einkanaligen Geräuschreduktion für gestörte Sprachsignale
JP4679145B2 (ja) * 2004-12-28 2011-04-27 有限会社アトズム 壁面固定部の止着構造および吊り下げ具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827517A (en) * 1985-12-26 1989-05-02 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech processor using arbitrary excitation coding
JPS6337724A (ja) * 1986-07-31 1988-02-18 Fujitsu Ltd 符号化伝送装置
US4797926A (en) * 1986-09-11 1989-01-10 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech vocoder
JPS63214032A (ja) * 1987-03-02 1988-09-06 Fujitsu Ltd 符号化伝送装置
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
CA2021514C (en) * 1989-09-01 1998-12-15 Yair Shoham Constrained-stochastic-excitation coding

Also Published As

Publication number Publication date
JPH03102921A (ja) 1991-04-30
NO303475B1 (no) 1998-07-13
CA2021514A1 (en) 1991-03-02
NO903641L (no) 1991-03-04
KR100204740B1 (ko) 1999-06-15
FI904303A0 (fi) 1990-08-31
DE69017801T2 (de) 1995-07-13
CA2021514C (en) 1998-12-15
EP0415675A2 (en) 1991-03-06
US5481642A (en) 1996-01-02
JP3062226B2 (ja) 2000-07-10
EP0415675B1 (en) 1995-03-15
EP0415675A3 (en) 1991-04-24
KR910007291A (ko) 1991-04-30
FI97580C (fi) 1997-01-10
DE69017801D1 (de) 1995-04-20
NO903641D0 (no) 1990-08-17
US5719992A (en) 1998-02-17

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Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: AT&T CORP.

BB Publication of examined application
FG Patent granted

Owner name: AT&T CORP.