Audio frequency signal compressing system

Details Audio frequency signal compressing system Audio frequency signal compressing system

1992-07-07

1994-04-12

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including amplitude or volume control

With amplitude compression/expansion

381 72, 381108, 333 14, H03G 700, H03G 300, A61F 1106, H04B 164

Patent

active

053033086

ABSTRACT:
An audio frequency compressing system for amplifying an input signal to produce a power output signal while removing high-level signals which could harm a listener. Gain control in the feedback path of an amplifier includes both a gain controller circuit for supplying a constant feedback impedance and a plurality of resistors which can be coupled to the gain controller circuit to increase or decrease the feedback impedance. Coupling of the resistors to the gain controller circuit is controlled by a feedback control circuit having both an automatic gain control circuit and a continuous high-level protection circuit.

REFERENCES:
patent: 4466119 (1984-08-01), Peters et al.
patent: 4893344 (1990-01-01), Tragardh et al.
patent: 4928307 (1990-05-01), Lynn
patent: 5058155 (1991-10-01), Larsen

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