Sound reproducer

Details Sound reproducer Sound reproducer

1989-07-19

1990-06-12

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

381 1, 381 17, 381 18, 381 20, 381 21, 381 22, 381 23, H04N 560, H04S 300

Patent

active

049337688

ABSTRACT:
A television receiver includes a volume control circuit (4) for controlling levels of sound signals corresponding to a left channel, a right channel, a center channel and a surround channel and speakers (6 to 10) corresponding to these channels. The television receiver further comprises a test tone circuit (11; 18), a microcomputer (14) and a character display circuit (16). The test tone circuit (11; 18) supplies a test tone of a prescribed frequency sequentially to the speakers (6 to 10) through the volume control circuit (4). The microcomputer (14) provides a command to the character display circuit (16) so that a CRT 17) displays which speaker is currently supplied with the test tone as well as volume levels of the respective speakers.

REFERENCES:
patent: 4385814 (1983-05-01), Elliott
patent: 4577188 (1986-03-01), Inami et al.
patent: 4799260 (1989-01-01), Handell et al.
patent: 4817149 (1989-03-01), Myers

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