US3636801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rim-shot-sound-producing device for an electronic musical instrument
Assignee: Nippon Gakki Co Ltd
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Filing: 1971-03-18
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Granted: 1972-01-25
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Expires: 1991-03-18
Abstract
Abstract The rim shot sound of a snare drum is simulated. Upon manipulation of a key switch, a percussive sine wave having a sudden buildup and a subsequent decay is obtained. The percussive sine wave signal is introduced into a clipper circuit wherein the wave peaks in the beginning portion having great amplitude are clipped. The signal is then passed through a differentiation circuit, from which is obtained a percussive signal with harmonics richer in the beginning portion and less toward end.
Inventors
- 👤 Kiyoshi Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/14; G10H2250/00; G10H2250/315; G10H2250/435; Y; Y10; Y10S; Y10S84/00; Y10S84/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A rim-shot-sound-producing device for an electronic musical instrument comprising: a key switch, circuit means for producing a percussive sine wave signal having a sudden buildup and a subsequent decay upon manipulation of said key switch, a clipper circuit connected to said circuit means to clip the wave peaks of said percussive sine wave signal in the beginning portion thereof having great amplitudes, and a differentiation circuit to pass the clipped signal from said clipper circuit.
Claim 2
Dependent Claim
75 words
A rim-shot-sound-producing device for an electronic musical instrument comprising: a key switch, circuit means for producing a percussive sine wave signal having a sudden buildup and a subsequent decay upon manipulation of said key switch, a clipper circuit connected to said circuit means to clip the wave peaks of said percussive sine wave signal in the beginning portion thereof having great amplitudes, and a differentiation circuit to pass the clipped signal from said clipper circuit.
Claim 3
Dependent Claim
37 words
The rim shot sound producing device according to claim 1 wherein said circuit means for producing a percussive sine wave signal comprises a circuit producing a percussive pulse and a resonance circuit triggered by said percussive pulse.
Claim 4
Dependent Claim
21 words
The rim shot sound producing device according to claim 1 wherein said resonance circuit consists of a capacitor and an inductor.
Claim 5
Dependent Claim
21 words
The rim shot sound producing device according to claim 3 wherein said resonance circuit further includes a damping resistor connected therein.
Claim 6
Dependent Claim
36 words
The rim shot sound producing device according to claim 1 wherein said clipper circuit consists of a saturation amplifier so designed as to clip at a substantially half voltage level of the maximum amplitude envelope portions.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |