Sound reproducer

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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Details

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

Patent

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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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