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EP0381507A3 - Silence/non-silence discrimination apparatus - Google Patents

Silence/non-silence discrimination apparatus Download PDF

Info

Publication number
EP0381507A3
EP0381507A3 EP19900301081 EP90301081A EP0381507A3 EP 0381507 A3 EP0381507 A3 EP 0381507A3 EP 19900301081 EP19900301081 EP 19900301081 EP 90301081 A EP90301081 A EP 90301081A EP 0381507 A3 EP0381507 A3 EP 0381507A3
Authority
EP
European Patent Office
Prior art keywords
silent
silence
priority component
lpc
cepstrum
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.)
Withdrawn
Application number
EP19900301081
Other languages
German (de)
French (fr)
Other versions
EP0381507A2 (en
Inventor
Masami C/O Intellectual Property Div. Akamine
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.)
Toshiba Corp
Original Assignee
Toshiba 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
Priority claimed from JP1022522A external-priority patent/JPH02204799A/en
Priority claimed from JP1022512A external-priority patent/JPH02203397A/en
Priority claimed from JP1168310A external-priority patent/JPH0335297A/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP0381507A2 publication Critical patent/EP0381507A2/en
Publication of EP0381507A3 publication Critical patent/EP0381507A3/en
Withdrawn legal-status Critical Current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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice 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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

A speech signal is input to an LPC cepstrum calcu­ lator (51) and the LPC cepstrums of the speech signal for each frame are calculated as characteristic parameters. The cepstrum is input to a characteristic parameter projection circuit (54) including an inner product calculator (53) and a memory (52) storing first to third priority component vectors that are obtained by applying a priority component analysis to the LPC cepstrums of the non-silent parts of the speech. The inner product calculator (53) calculates inner products of the cepstrum vector and the priority component vec­ tors stored in the priority component vector memory (52) to obtain a projected point of the LPC cepstrums in a vector space formed by the first to third priority com­ ponent vectors. The output of the inner product calcu­ lator (53) is supplied to a silence/non-silence discriminator (56) to which a non-silent region parame­ ter memory (55) storing parameters defining a non-silent region in the non-silent priority component vector space. The silence/non-silence discriminator (56) determines if the speech is silent or non-silent based on whether the projected point is within the non-silent region.
EP19900301081 1989-02-02 1990-02-01 Silence/non-silence discrimination apparatus Withdrawn EP0381507A3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP22512/89 1989-02-02
JP22522/89 1989-02-02
JP1022522A JPH02204799A (en) 1989-02-02 1989-02-02 Voiced/voiceless part detecting system
JP1022512A JPH02203397A (en) 1989-02-02 1989-02-02 Voice/voiceless part detection system
JP1168310A JPH0335297A (en) 1989-07-01 1989-07-01 Vocal sound/silent sound detection system
JP168310/89 1989-07-01

Publications (2)

Publication Number Publication Date
EP0381507A2 EP0381507A2 (en) 1990-08-08
EP0381507A3 true EP0381507A3 (en) 1991-04-24

Family

ID=27283877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900301081 Withdrawn EP0381507A3 (en) 1989-02-02 1990-02-01 Silence/non-silence discrimination apparatus

Country Status (1)

Country Link
EP (1) EP0381507A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970017456A (en) * 1995-09-30 1997-04-30 김광호 Silent and unvoiced sound discrimination method of audio signal and device therefor
JP4201471B2 (en) * 2000-09-12 2008-12-24 パイオニア株式会社 Speech recognition system
JP4201470B2 (en) * 2000-09-12 2008-12-24 パイオニア株式会社 Speech recognition system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720862A (en) * 1982-02-19 1988-01-19 Hitachi, Ltd. Method and apparatus for speech signal detection and classification of the detected signal into a voiced sound, an unvoiced sound and silence

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720862A (en) * 1982-02-19 1988-01-19 Hitachi, Ltd. Method and apparatus for speech signal detection and classification of the detected signal into a voiced sound, an unvoiced sound and silence

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
IEE PROCEEDINGS, vol. 131, part F, no. 2, April 1984, pages 146-152, Old Woking, Surrey, GB; G.R. DATTATREYA et al.: "Decision tree design and applications in speech processing" *
IEEE TRANSACTIONS ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, vol. 24, no. 3, June 1976, pages 201-212, IEEE, New York, US; B.S. ATAl et al.: "A pattern recognition approach to voiced-unvoiced-silence classification with applications to speech recognition" *
IEEE TRANSACTIONS ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, vol. 31, no. 3, June 1983, pages 678-684, IEEE, New York, US; P. DE SOUZA: "A statistical approach to the design of an adaptive self-normalizing silence detector" *
IEEE TRANSACTIONS ON COMPUTER, vol. C-20, no. 9, September 1971, pages 972-978; L.C.W. POLS: "Real-time recognition of spoken words" *
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, ICASSP'87, 6th - 9th April 1987, Dallas, Texas, pages 2392-2395; J.M. NAIK et al.: "Evaluation of a high performance speaker verification system for access control" *

Also Published As

Publication number Publication date
EP0381507A2 (en) 1990-08-08

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