Speech recognizer

Details Speech recognizer Speech recognizer

1987-05-11

1989-04-25

Kemeny, Emanuel S.

Boots, shoes, and leggings

381 47, 381 43, 381 51, 381 41, G10L 500

Patent

active

048253847

ABSTRACT:
A voice subtractor/recognizer which prevents interference from a voice output device by inputting via one input device both a sound to be recognized and any sound being output by the output device, and inputting at a second input device a signal representing the output of the output device. The latter signal is analyzed, and the result is used to inversely filter a signal representing the sounds input via the first-mentioned input device.

REFERENCES:
patent: 3662108 (1972-05-01), Flanagan
patent: 3784747 (1974-01-01), Berkley et al.
patent: 3786188 (1974-01-01), Allen
patent: 4225754 (1980-09-01), Bernard et al.
patent: 4348550 (1982-09-01), Pirz et al.
patent: 4385359 (1983-05-01), Watari et al.
patent: 4417098 (1983-11-01), Chaplin et al.
patent: 4459674 (1984-07-01), Sakurai

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