US3719782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for changing the output response characteristics of an acoustic input
Assignee: Individual
•
Filing: 1971-10-12
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Granted: 1973-03-06
•
Expires: 1991-10-12
Abstract
Abstract A SECOND SYSTEM IS DISCLOSED INCORPORATING A FREQUENCY DIVIDER FOR DIVIDING A SOUND SIGNAL INTO PREDETERMINED FREQUENCY RANGES. EACH FREQUENCY RANGE IS SELECTIVELY SUBJECTED TO PHASE SHIFTING AND/OR AMPLITUDE MODULATION TO PRODUCE A DESIRED EFFECT. THE MODULATED FREQUENCY RANGES ARE RECOMBINED IN A MIXER AND THE MIXED SIGNAL IS APPLIED TO APPROPRIATE AMPLIFYING THE TRANSDUCING MEANS THROUGH A PARALLEL ARRANGEMENT OF A RESISTANCE AND A REVERB SYSTEM. ADJUSTMENTS ARE PROVIDED FOR ALTERING THE INTER RANGE PHASE RELATIONSHIP AND FOR INDUCING TREMOLO IN SELECTED FREQUENCY RANGES, TREMOLO IS ALSO SELELCTIVELY PROVIDED FOR THE COMBINED AND MIXED FREQUENCY RANGES. D R A W I N G
Inventors
- 👤 P Barnum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:57
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |