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US 3,939,437 AGranted
All-pass reverberator with an MOS delay line
AssigneeITT Industries, Inc.
InventorFritz Guenter Adam
Life of this patent
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Abstract
The invention provides a circuit for an all-pass reverberator with an MOS delay line and feed back amplifier. The circuit compensates for the frequency-dependent attenuation of the delay line. Two amplifiers of the prior art circuit are replaced by resistors and a third one has specific characteristics.
Claims4
An all-pass reverberator, comprising:
- an input terminal;
- a first adding circuit having first and second inputs and an output, said first input connected to the input terminal;
- an MOS delay line having an input and an output and an attenuation of g.sub.d, said input being connected to the output of the first adding circuit;
- a second adding circuit having first and second inputs and an output;
- an output terminal connected to the output of the second adding circuit;
- first circuit means for connecting the output of the delay line to the first input of the second adding circuit, said first circuit means having a gain of g.sub.y ;
- second circuit means for connecting the output of the delay line to the second input of the first adding means, said second circuit means having a gain of g.sub.x ;
- and
- third circuit means for connecting the input terminal to the second input of the second adding circuit, said third circuit means having a gain of g.sub.z, wherein the gain ##EQU7##
6 more elements
Dependencies are inferred from the claim text.