Automotive multi-speaker audio system with automatic echo-contro

Details Automotive multi-speaker audio system with automatic echo-contro Automotive multi-speaker audio system with automatic echo-contro

1986-03-27

1987-09-15

Isen, Forester W.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 56, 381 17, H03G 300

Patent

active

046944974

ABSTRACT:
An automotive audio system separates audio signals from an audio signal source into first and second components. The first component of the audio signal is sent directly to a first main amplifier through a first audio signal path and reproduced through a main speaker or speakers. On the other hand, the second component of the audio signal is sent to a second main amplifier through a second audio signal path. An echo system is provided with the second audio signal path, which echo system induces echos in the audio sound to be reproduced through the second main amplifier. The echo system is associated with a discriminator circuit which receives an audio signal output from the audio signal source and derives an echo system control signal on the basis of the audio signal. The echo signal control signal is fed to the echo system for controlling operation of the echo system.

REFERENCES:
patent: 4404427 (1983-09-01), Blackmer

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