Electronic audio signal processor

Details Electronic audio signal processor Electronic audio signal processor

1985-06-17

1986-12-02

George, Keith E.

Textiles: ironing or smoothing

Smoothing machines

Roller presser

381106, 333 14, H03G 300, H03G 700

Patent

active

046270949

ABSTRACT:
In an electronic audio signal processor suitable for electrical instruments such as electrical guitars, there is provided an improved pre-amplifier and compressor circuit which compresses the amplitude level of an inputted audio signal so as to provide lower noise better weak note recovery and improved high end boost, for low volume signals when the output thereof is fed through a distortion amplifier. The compressor circuit includes an op amp and feedback FET transistor.

REFERENCES:
patent: 3304369 (1967-02-01), Dreyfus
patent: 4072914 (1978-02-01), Haramoto et al.
patent: 4363006 (1982-12-01), Ishigaki et al.
patent: 4400583 (1983-08-01), Bloy
patent: 4490691 (1984-12-01), Dolby
patent: 4538297 (1985-08-01), Waller, Jr.
Electronics Today International, vol. 8, No. 10, Oct. 1979, pp. 47-49, "Project:Audio Compressor".
Wireless World, vol. 83, No. 1497, May 1977, p. 80, "Speech Compressor/Limiter.

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