CA2060591A1 - Speaker-independent label coding apparatus - Google Patents

Speaker-independent label coding apparatus

Info

Publication number
CA2060591A1
CA2060591A1 CA2060591A CA2060591A CA2060591A1 CA 2060591 A1 CA2060591 A1 CA 2060591A1 CA 2060591 A CA2060591 A CA 2060591A CA 2060591 A CA2060591 A CA 2060591A CA 2060591 A1 CA2060591 A1 CA 2060591A1
Authority
CA
Canada
Prior art keywords
prototypes
feature
feature vector
class
vector
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.)
Granted
Application number
CA2060591A
Other languages
French (fr)
Other versions
CA2060591C (en
Inventor
Lalit R. Bahl
Michael A. Picheny
David Nahamoo
Peter V. De Souza
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of CA2060591A1 publication Critical patent/CA2060591A1/en
Application granted granted Critical
Publication of CA2060591C publication Critical patent/CA2060591C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3082—Vector coding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio

Abstract

The present invention is related to speech recognition and particularly to a new type of vector quantizer and a new vector quantization technique in which the error rate of associating a sound with an incoming speech signal is drastically reduced. To achieve this end, the present invention technique groups the feature vectors in a space into different prototypes at least two of which represent a class of sound. Each of the prototypes may in turn have a number of subclasses or partitions. Each of the prototypes and their subclasses may be assigned respective identifying values.
To identify an incoming speech feature vector, at least one of the feature values of the incoming feature vector is compared with the different values of the respective prototypes, or the subclasses of the prototypes. The class of sound whose group of prototypes, or at least one of the prototypes, whose combined value most closely matches the value of the feature value of the feature vector is deemed to be the class corresponding to the feature vector. The feature vector is then labeled with the identifier associated with that class.
CA002060591A 1991-03-22 1992-02-04 Speaker-independent label coding apparatus Expired - Fee Related CA2060591C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/673,810 1991-03-22
US07/673,810 US5182773A (en) 1991-03-22 1991-03-22 Speaker-independent label coding apparatus

Publications (2)

Publication Number Publication Date
CA2060591A1 true CA2060591A1 (en) 1992-09-23
CA2060591C CA2060591C (en) 1996-08-13

Family

ID=24704198

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002060591A Expired - Fee Related CA2060591C (en) 1991-03-22 1992-02-04 Speaker-independent label coding apparatus

Country Status (5)

Country Link
US (1) US5182773A (en)
EP (1) EP0504485B1 (en)
JP (1) JP3337233B2 (en)
CA (1) CA2060591C (en)
DE (1) DE69129015T2 (en)

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US6023673A (en) * 1997-06-04 2000-02-08 International Business Machines Corporation Hierarchical labeler in a speech recognition system
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US6418409B1 (en) * 1999-10-26 2002-07-09 Persay Inc. Error derived scores for detection systems
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US7016839B2 (en) * 2002-01-31 2006-03-21 International Business Machines Corporation MVDR based feature extraction for speech recognition
US20040117186A1 (en) * 2002-12-13 2004-06-17 Bhiksha Ramakrishnan Multi-channel transcription-based speaker separation
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KR101190875B1 (en) * 2004-01-30 2012-10-15 프랑스 뗄레콤 Dimensional vector and variable resolution quantization
US7191175B2 (en) 2004-02-13 2007-03-13 Attenex Corporation System and method for arranging concept clusters in thematic neighborhood relationships in a two-dimensional visual display space
KR100629997B1 (en) * 2004-02-26 2006-09-27 엘지전자 주식회사 encoding method of audio signal
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Also Published As

Publication number Publication date
EP0504485A3 (en) 1993-05-26
JP3337233B2 (en) 2002-10-21
EP0504485B1 (en) 1998-03-04
EP0504485A2 (en) 1992-09-23
CA2060591C (en) 1996-08-13
JPH0535299A (en) 1993-02-12
US5182773A (en) 1993-01-26
DE69129015T2 (en) 1998-10-29
DE69129015D1 (en) 1998-04-09

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