Speech recognition system for an automotive vehicle

Details Speech recognition system for an automotive vehicle Speech recognition system for an automotive vehicle

1983-01-06

1985-12-10

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 57, G10L 100

Patent

active

045584591

ABSTRACT:
In a speech recognition and control system for an automobile, the microphone preamplifier gain is made inversely proportional to the background sound noise level. Noise level is determined by averaging the microphone output for 100 milliseconds after the recognition switch is closed, before speech.

REFERENCES:
patent: 2657264 (1953-10-01), Augustadt
patent: 3934084 (1976-01-01), Munson et al.
patent: 4109104 (1978-08-01), Toyoshima
Lokerson, "A Unique Real-Time Speech Decoder That Operates from New Perspectives", IEEE Int'l Conf. on Acoustics, 1979, pp. 112-115.

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