Audio volume level control

Details Audio volume level control Audio volume level control

1991-02-14

1992-07-14

LaRoche, Eugene R.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330279, 381104, 381107, 381109, H03G 320

Patent

active

051306654

ABSTRACT:
An audio volume controller includes a variable gain amplifier which amplifies an audio signal and drives a sound transducer such as a loud speaker. A volume controller is responsive to the level of the audio signal to adjust the gain of the amplifier to maintain the level of sound reproduced by the speaker between manually adjustable minimum and maximum values. A second minimum level control is provided to set a predetermined minimum audio signal level below which the gain of the amplifier is not increased in an attempt to maintain the sound level above the manually adjusted level.

REFERENCES:
patent: 4320254 (1982-03-01), Tottori et al.
patent: 4792977 (1988-12-01), Anderson

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