Tone control circuit

Details Tone control circuit Tone control circuit

1976-04-09

1977-10-25

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

Equalizers

179 1D, 307264, 330151, H03H 710

Patent

active

040558185

ABSTRACT:
Circuits for a high fidelity sound reproducing system which are suitable for providing treble, bass tone boost and cut functions. The audio input signal is utilized for producing a signal having the magnitude thereof frequency dependent. This frequency dependent signal is divided by a splitter circuit into feedback and feed forward signals and combined with the audio signal to either decrease or increase the magnitude of the audio signal appearing at an output thereof as a function of frequency. The ratio of feedback to feed forward signals produced by the splitter circuit is controlled by a direct current (DC) control voltage applied thereto. Because the control of the frequency dependent signals to vary the function of the circuit is accomplished elsewhere than in signal path of the audio signal the circuit is suitable for providing tone control remotely.

REFERENCES:
patent: 3921104 (1975-11-01), Gundry
patent: 3972010 (1976-07-01), Dolby

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