Voice recognition system used in telephone apparatus

Details Voice recognition system used in telephone apparatus Voice recognition system used in telephone apparatus

1991-11-20

1993-08-24

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381107, 381 43, 395 2, G10L 500

Patent

active

052395863

ABSTRACT:
A voice recognition system comprises a handset and a hands-free microphone for generating an input audio signal, a high-pass filter for eliminating low frequency components from the signal from the handset or hands-free microphone, a signal level controller for adjusting the level of the high-pass signal in response to the user of either the handset or hands-free microphone, a storer for storing the speech data and a controller for controlling the storer so that a user's utterance is stored or the user's utterance is recognized by comparing the utterance to speech data already stored. The handset hook switch provides an on-hook control signal to reduce amplifier gain during hands-free microphone operation.

REFERENCES:
patent: 3825682 (1974-07-01), Phillips
patent: 4109104 (1978-08-01), Toyoshima
patent: 4158750 (1979-06-01), Sakoe et al.
patent: 4348550 (1982-09-01), Pirz et al.
patent: 4385359 (1983-05-01), Watari et al.
patent: 4558178 (1985-12-01), Yasuda et al.
patent: 4608462 (1986-08-01), Blomley et al.
patent: 4636586 (1987-01-01), Schiff
patent: 4642807 (1987-02-01), Comroe et al.
patent: 4696032 (1987-09-01), Levy
ARRL "Handbook", 1987, pp. 4-41.
Miyatake et al., A Voice Activated Telephone, IEEE Transactions on Consumer Electronics, vol. CE-32, No. 3, Aug. 1986, pp. 468-473.

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