Automatic gain expansion system

Details Automatic gain expansion system Automatic gain expansion system

1988-06-20

1989-11-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330 86, 330110, 330136, 330284, H03G 330

Patent

active

048810479

ABSTRACT:
A system for the high gain amplification of musical audio signals uses a control signal derived from the audio signal to automatically vary the current in the gain control circuit of the amplifier in response to audio signal level changes. A distortion circuit in the feedback path of the amplifier provides controlled distortion. The system may also provide for a variable control signal threshold level and for variation in control signal decay characteristics. The system may further provide a user variable maximum gain control.

REFERENCES:
patent: 3986049 (1976-10-01), Campbell et al.
patent: 4218662 (1980-08-01), Schroder
patent: 4752960 (1988-06-01), Scholz

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