VOICE RECOGNITION APPARATUS

The apparatus isolates several characteristic parameters from a standard sentence pronounced by a speaker and compares them with average parameters of the same speaker, previously calculated and stored in an internal memory; based upon the result of the comparison, the probability that the sentence...

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Bibliographic Details
Main Authors CIARAMELLA, ALBERTO, CAVAZZA, MICHELE
Format Patent
LanguageEnglish
French
Published 30.09.1986
Edition4
Subjects
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Summary:The apparatus isolates several characteristic parameters from a standard sentence pronounced by a speaker and compares them with average parameters of the same speaker, previously calculated and stored in an internal memory; based upon the result of the comparison, the probability that the sentence spoken belongs to that speaker is quantified and compared with a threshold value independently derived from the average parameter variance by a threshold calculation circuit. If the threshold is passed, the speaker is considered recognized. The device comprises an input circuit determining the beginning and end of the test sentence in order to limit the time interval within which the characteristic parameters are to be calculated, and a circuit which temporally aligns the characteristic parameters just calculated with the parameters of a reference sentence, to obtain standard durations for the sounds comprised by the spoken sentence.
Bibliography:Application Number: CA19840470518