Input device for computer speech recognition system

Details Input device for computer speech recognition system Input device for computer speech recognition system

1981-12-01

1984-07-17

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 100

Patent

active

044610246

ABSTRACT:
Systems for the recognition of speech by computer have usually required t the speech be of a strictly standarized nature, free of such features as regional accent, and unaccompanied by background noise. The problem has been to produce a system providing information which will allow accurate recognition in the presence of noise, and with non-standard speech sounds. The invention provides to a computer in a speech recognition system information in parallel streams on a number of factors, viz, the existence, in any signal which may contain speech sounds, of a fundamental repetitive structure and its periodicity; the existence of a high frequency component having a wide frequency band; the existence of a component having energy relatively stable with respect to time and characteristic of background noise; the peak frequency, peak amplitude and band width of sounds lacking a low frequency component; and the frequency of resonant content of any component having a fundamental repetitive structure and the level of correlation.

REFERENCES:
patent: 3803357 (1974-04-01), Sacks
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4230906 (1980-10-01), Davis
patent: 4239936 (1980-12-01), Sakoe

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