US3939437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All-pass reverberator with an MOS delay line
Assignee: ITT Inc
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Filing: 1974-11-22
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Granted: 1976-02-17
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Expires: 1994-11-22
Abstract
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.
Inventors
- 👤 Fritz Guenter Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/08; G10K15/12; Y; Y10; Y10S; Y10S84/00; Y10S84/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
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 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 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 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 z , wherein the gain ##EQU7##
Claim 2
Dependent Claim
175 words
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 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 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 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 z , wherein the gain ##EQU7##
Claim 3
Dependent Claim
32 words
An all-pass reverberator as described in claim 1, wherein the first circuit means and second circuit means have gains substantially equal to 1 and the third circuit means has a gain ##EQU8##
Claim 4
Dependent Claim
38 words
An all-pass reverberator as described in claim 1, wherein the second circuit means and third circuit means have gains substantially equal to 1 and the first circuit means has a gain g y = 1-l/g d 2 .
Claim 5
Dependent Claim
32 words
An all-pass reverberator as described in claim 1, wherein the first circuit means and third circuit means have gains substantially equal to 1 and the second circuit means has a gain ##EQU9##
References Cited (Backward Citations)
US3110771A
Cited
US3761629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |