Electronic volume device

Details Electronic volume device Electronic volume device

1988-10-26

1991-04-23

Isen, Forester W.

Electrical audio signal processing systems and devices

Including amplitude or volume control

H03G 300

Patent

active

050105779

ABSTRACT:
An electronic volume device of a chopper type in which a switching control unit thereof can be composed of a monolithic integrated circuit and which controls a quantity of attenuation of an analog signal input to the device by switching the analog signal at predetermined periods. A comparator compares the volume control data generated by a volume control data generator and the counts of a counter which counts clocks having a predetermined period to output a signal indicative of the result of the comparison. This signal controls a tri-state buffer, the output of which is used to switch the input signal.

REFERENCES:
patent: 4349779 (1982-09-01), Ono
patent: 4479237 (1984-10-01), Sugasawa
patent: 4616271 (1986-10-01), Yasukawa et al.
patent: 4797932 (1989-01-01), Rohulich et al.

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