Electronic volume control circuit

Details Electronic volume control circuit Electronic volume control circuit

1984-12-07

1986-09-09

Dwyer, James L.

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

381109, H03G 102

Patent

active

046113444

ABSTRACT:
An electronic volume control circuit in which the volume setting can be finely controlled, regardless of the level of the input signal, and the output sound level can be rapidly changed. A digital signal is produced indicative of either the duration of up and down instruction signals or a number of times of occurrence of the up or down instruction signals. This digital signal is decoded in accordance with a look-up table to produce data indicative of an increase or decrease width of the volume data. An arithmetic circuit operates in response to the output of the decoder to increase or decrease the volume data according to the up and down instruction signals, and the attenuation or amplification of the input signal is established accordingly.

REFERENCES:
patent: 4178826 (1979-12-01), Hiyoshi et al.
patent: 4390834 (1983-06-01), Ohshita
patent: 4479237 (1984-10-01), Sugasawa

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