HK106693A - An adaptive multivariate estimating apparatus - Google Patents

An adaptive multivariate estimating apparatus

Info

Publication number
HK106693A
HK106693A HK1066/93A HK106693A HK106693A HK 106693 A HK106693 A HK 106693A HK 1066/93 A HK1066/93 A HK 1066/93A HK 106693 A HK106693 A HK 106693A HK 106693 A HK106693 A HK 106693A
Authority
HK
Hong Kong
Prior art keywords
classifiers
statistical
unvoiced
weights
frame
Prior art date
Application number
HK1066/93A
Inventor
David Lynn Thomson
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of HK106693A publication Critical patent/HK106693A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Feedback Control In General (AREA)
  • Paper (AREA)
  • Bridges Or Land Bridges (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Radiation (AREA)

Abstract

Apparatus for detecting a fundamental frequency in speech in a changing speech environment by using adaptive statistical techniques. A statistical voice detector (103) detects changes in the voice environment by classifiers that define certain attributes of the speech to recalculate weights that are used to combine the classifiers in making the unvoiced/voiced decision that specifies whether the speech has a fundamental frequency or not. The detector is responsive to classifiers to first calculate the average of the classifiers (202) and then to determine the overall probability that any frame will be unvoiced. In addition, the detector using a statistical calculator (203) forms two vectors, one vector represents the statistical average of values that an unvoiced frame's classifiers would have and the other vector represents the statistical average of the values of the classifiers for a voiced frame. These latter calculations are performed utilizing not only the average value of the classifiers and present classifiers but also a vector defining the weights that are utilized to determine whether a frame is unvoiced or not plus a threshold value. A weights calculator (204) is responsive to the information generated in the statistical calculations to generate a new set of values for the weights vector and the threshold value which are utilized by the statistical calculator during the next frame. An unvoiced/voiced determinator (205) then is reponsive to the two statistical average vectors and the weights vector to make the unvoiced/voiced decision.
HK1066/93A 1987-04-03 1993-10-07 An adaptive multivariate estimating apparatus HK106693A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3429687A 1987-04-03 1987-04-03
PCT/US1988/000030 WO1988007738A1 (en) 1987-04-03 1988-01-12 An adaptive multivariate estimating apparatus

Publications (1)

Publication Number Publication Date
HK106693A true HK106693A (en) 1993-10-15

Family

ID=21875521

Family Applications (1)

Application Number Title Priority Date Filing Date
HK1066/93A HK106693A (en) 1987-04-03 1993-10-07 An adaptive multivariate estimating apparatus

Country Status (9)

Country Link
EP (1) EP0308433B1 (en)
JP (1) JPH01502779A (en)
AT (1) ATE82426T1 (en)
AU (1) AU599459B2 (en)
CA (2) CA1337708C (en)
DE (1) DE3875894T2 (en)
HK (1) HK106693A (en)
SG (1) SG59893G (en)
WO (1) WO1988007738A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007739A1 (en) * 1987-04-03 1988-10-06 American Telephone & Telegraph Company An adaptive threshold voiced detector
JP3277398B2 (en) * 1992-04-15 2002-04-22 ソニー株式会社 Voiced sound discrimination method
US6202046B1 (en) 1997-01-23 2001-03-13 Kabushiki Kaisha Toshiba Background noise/speech classification method
JP3670217B2 (en) 2000-09-06 2005-07-13 国立大学法人名古屋大学 Noise encoding device, noise decoding device, noise encoding method, and noise decoding method
JP4517045B2 (en) * 2005-04-01 2010-08-04 独立行政法人産業技術総合研究所 Pitch estimation method and apparatus, and pitch estimation program
CN104517614A (en) * 2013-09-30 2015-04-15 上海爱聊信息科技有限公司 Voiced/unvoiced decision device and method based on sub-band characteristic parameter values

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007739A1 (en) * 1987-04-03 1988-10-06 American Telephone & Telegraph Company An adaptive threshold voiced detector

Also Published As

Publication number Publication date
AU1222688A (en) 1988-11-02
CA1337708C (en) 1995-12-05
DE3875894T2 (en) 1993-05-19
DE3875894D1 (en) 1992-12-17
EP0308433A1 (en) 1989-03-29
ATE82426T1 (en) 1992-11-15
EP0308433B1 (en) 1992-11-11
AU599459B2 (en) 1990-07-19
SG59893G (en) 1993-07-09
CA1338251C (en) 1996-04-16
JPH0795237B1 (en) 1995-10-11
WO1988007738A1 (en) 1988-10-06
JPH01502779A (en) 1989-09-21

Similar Documents

Publication Publication Date Title
Beritelli et al. A robust voice activity detector for wireless communications using soft computing
CA2483324A1 (en) Estimation of background noise in a variable rate vocoder
HK1056427A1 (en) Method and apparatus for constructing voice templates for a speaker-independent voice recognition system.
JP2969862B2 (en) Voice recognition device
SG59893G (en) An adaptive multivariate estimating apparatus
JPH07261789A (en) Boundary estimating method for voice recognition and voice recognition device
Silsbee Sensory integration in audiovisual automatic speech recognition
HK21794A (en) An adaptive threshold voiced detector
Griffin et al. Speech synthesis from short-time fourier transform magnitude and its application to speech processing
AU646060B2 (en) Adaptation of reference speech patterns in speech recognition
HoChoi et al. Speech recognition method using quantised LSP parameters in CELP-type coders
Fissore et al. Analysis and improvement of the partial distance search algorithm
JPH04296799A (en) Voice recognition device
KR0170317B1 (en) Voice recognition method using hidden markov model having distortion density of observation vector
Thompson et al. Within class optimization of cepstra for speaker recognition.
Laleye et al. An algorithm based on fuzzy logic for text-independent fongbe speech segmentation
KR970050118A (en) Automatic Model Determination of Speech Recognition
Wutiwiwatchai et al. A new strategy of fuzzy-neural network for Thai numeral speech recognition
Huang et al. Voice activity detection using haircell model in noisy environment
JPS6136797A (en) Voice segmentation
Wen et al. Enhancing the stability of speaker verification with compressed templates
JPH02293798A (en) Dictionary updating system for voice recognizing device
JPS63223696A (en) Voice pattern generation system
SCHMIDT-NIELSEN Speaker recognition using phoneme specific sentences(Final Report, Oct. 1984- Sep. 1985)
JPS6310840B2 (en)

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)