ATE249672T1 - VOICE CODING AND DECODING SYSTEM - Google Patents

VOICE CODING AND DECODING SYSTEM

Info

Publication number
ATE249672T1
ATE249672T1 AT97930643T AT97930643T ATE249672T1 AT E249672 T1 ATE249672 T1 AT E249672T1 AT 97930643 T AT97930643 T AT 97930643T AT 97930643 T AT97930643 T AT 97930643T AT E249672 T1 ATE249672 T1 AT E249672T1
Authority
AT
Austria
Prior art keywords
speech
series
frame
reference sample
peaks
Prior art date
Application number
AT97930643T
Other languages
German (de)
Inventor
Costas Xydeas
Original Assignee
Univ Manchester
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 GBGB9614209.6A external-priority patent/GB9614209D0/en
Application filed by Univ Manchester filed Critical Univ Manchester
Application granted granted Critical
Publication of ATE249672T1 publication Critical patent/ATE249672T1/en

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
    • 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
    • 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
    • G10L25/90—Pitch determination of speech signals
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L2025/937—Signal energy in various frequency bands
    • 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
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Telephonic Communication Services (AREA)
  • Aerials With Secondary Devices (AREA)
  • Optical Communication System (AREA)

Abstract

A speech synthesis system in which a speech signal is divided into a series of frames, and each frame is converted into a coded signal including a voiced/unvoiced classification and a pitch estimate, wherein a low pass filtered speech segment centred about a reference sample is defined in each frame, a correlation value is calculated for each of a series of candidate pitch estimates as the maximum of multiple crosscorrelation values obtained from variable length speech segments centred about the reference sample, the correlation values are used to form a correlation function defining peaks, and the locations of the peaks are determined and used to define a pitch estimate.
AT97930643T 1996-07-05 1997-07-07 VOICE CODING AND DECODING SYSTEM ATE249672T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9614209.6A GB9614209D0 (en) 1996-07-05 1996-07-05 Speech synthesis system
US2181596P 1996-07-16 1996-07-16
PCT/GB1997/001831 WO1998001848A1 (en) 1996-07-05 1997-07-07 Speech synthesis system

Publications (1)

Publication Number Publication Date
ATE249672T1 true ATE249672T1 (en) 2003-09-15

Family

ID=26309651

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97930643T ATE249672T1 (en) 1996-07-05 1997-07-07 VOICE CODING AND DECODING SYSTEM

Country Status (7)

Country Link
EP (1) EP0950238B1 (en)
JP (1) JP2000514207A (en)
AT (1) ATE249672T1 (en)
AU (1) AU3452397A (en)
CA (1) CA2259374A1 (en)
DE (1) DE69724819D1 (en)
WO (1) WO1998001848A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2784218B1 (en) * 1998-10-06 2000-12-08 Thomson Csf LOW-SPEED SPEECH CODING METHOD
GB2357683A (en) 1999-12-24 2001-06-27 Nokia Mobile Phones Ltd Voiced/unvoiced determination for speech coding
GB2398981B (en) * 2003-02-27 2005-09-14 Motorola Inc Speech communication unit and method for synthesising speech therein
DE102004007200B3 (en) 2004-02-13 2005-08-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for audio encoding has device for using filter to obtain scaled, filtered audio value, device for quantizing it to obtain block of quantized, scaled, filtered audio values and device for including information in coded signal
DE102004007191B3 (en) 2004-02-13 2005-09-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding
DE102004007184B3 (en) * 2004-02-13 2005-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for quantizing an information signal
CN114519996B (en) * 2022-04-20 2022-07-08 北京远鉴信息技术有限公司 Method, device and equipment for determining voice synthesis type and storage medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2670313A1 (en) * 1990-12-11 1992-06-12 Thomson Csf METHOD AND DEVICE FOR EVALUATING THE PERIODICITY AND VOICE SIGNAL VOICE IN VOCODERS AT VERY LOW SPEED.
JP3093113B2 (en) * 1994-09-21 2000-10-03 日本アイ・ビー・エム株式会社 Speech synthesis method and system
NZ303239A (en) * 1995-03-07 1999-01-28 British Telecomm Speech synthesis from recorded phonemes with amplitude adjustments

Also Published As

Publication number Publication date
EP0950238A1 (en) 1999-10-20
AU3452397A (en) 1998-02-02
EP0950238B1 (en) 2003-09-10
DE69724819D1 (en) 2003-10-16
JP2000514207A (en) 2000-10-24
WO1998001848A1 (en) 1998-01-15
CA2259374A1 (en) 1998-01-15

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Legal Events

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