Audio amplifier arrangement having a volume dependent tone contr

Details Audio amplifier arrangement having a volume dependent tone contr Audio amplifier arrangement having a volume dependent tone contr

1994-04-04

1995-07-18

Mullins, James B.

Amplifiers

Signal feedback

Phase shift means in loop path

330294, 330305, 330306, 381102, H03F 3183

Patent

active

054348676

ABSTRACT:
An audio amplifier having a volume-dependent tone control which is inexpensive and hardly distorts the audio signal. A filter in the signal path of the audio amplifier determines the tone control at low volumes. The bass tones and possibly treble tones are then amplified to a greater extent than the mid-range tones. With an increasing volume, a continuously controllable amplifier stage increasingly compensates this tone control. To this end a linear feedback path is arranged across this amplifier stage, with a pole in or near the frequency range of the bass and mid-range tones.

REFERENCES:
patent: 5046105 (1991-09-01), Bohn

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