Voice recognition apparatus

Details Voice recognition apparatus Voice recognition apparatus

G - Physics

10

L

354/49

G10L 17/00 (2006.01)

Patent

CA 1212179

ABSTRACT The apparatus isolates several characteristic parameters from a standard sentence pronounced by a speaker and com- pares 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 quan- tified 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 para- meters just calculated with the parameters of a reference sentence, to obtain standard durations for the sounds com- prised by the spoken sentence.

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