Audio amplifier device

Details Audio amplifier device Audio amplifier device

1979-11-07

1982-04-27

Mullins, James B.

Amplifiers

With plural amplifier channels

Amplifying different frequencies in different channels

333 17L, H03F 368, H03G 1104

Patent

active

043273319

ABSTRACT:
An audio amplifier device is disclosed by which an audio signal is separated in frequency into three or more signal components and the high frequency component or components and/or the low frequency component or components are attenuated automatically while a middle frequency component is amplified without attenuation.

REFERENCES:
patent: 3665345 (1972-05-01), Dolby
patent: 4045748 (1977-08-01), Filliman

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