Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1984-02-23
1985-04-23
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
3645135, G10L 100
Patent
active
045134367
ABSTRACT:
Speech recognition with time warp is simplified by finding a certain portion of a word whose time duration is the same for all speakers. In comparing an unknown speech with a reference speech, the time duration of an unknown speech is coincided with the time length of a reference speech with the two processes. According to the invention, an element vector of a speech is classified to the first portion and the second portion. The former is a consonant and co-articulation which couples the two sounds, and the latter is a vowel. The length of the first portion is almost independent from a speaker, and the length of the second portion depends upon a speaker. Therefore, the present invention matches the first portion of an unknown speech with that of the reference speech directly without changing the time length. Next, the sample elements in the second portion of the unknown speech is linearly matched with that of a reference speech. Thus, excellent recognition is obtained using a simple calculation.
REFERENCES:
Myers, et al., "A Comparative Study of Several Dynamic Time Warp . . . ", The Bell Tech J., Sep. 81, pp. 1389-1409.
Nose Isamu
Umehara Akihiko
Kemeny E. S. Matt
Oki Electric Industry Co. Ltd.
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