US3813472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument with rhythm selection pulse generator
Assignee: Nippon Gakki Co Ltd
•
Filing: 1972-08-17
•
Granted: 1974-05-28
•
Expires: 1992-08-17
Abstract
Abstract An electronic musical instrument for automatically changeing tone colors of musical sounds comprises a plurality of tone color formation circuits for providing different tone colors to a tone signal selectively derived from tone generators in response to operation of a keyboard and a switch circuit having switching elements for receiving the differently tone-colored signals respectively. The switch elements are rendered conductive to pass the tone signals therethrough in a preselected order in response to control signals which are recorded on one channel of a twochannel recording medium such as a stereophonic disk or tape. The other channel of the recording medium is recorded with musican information adapted to accompany a melody performance to be carried out by a player with the electronic musical instrument. The control signals are recorded on the recording medium at so proper positions thereof that musical sounds being produced by the electronic musical instrument are caused to be varied at proper points of time in conformity with melody and accompaniment performances. The control signals may be utilized to control rhythm section sounds in various ways.
Inventors
- 👤 K Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:42
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/40; G10H2210/00; G10H2210/341; G10H2210/361; Y; Y10; Y10S; Y10S84/00; Y10S84/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
314 words
An electronic musical instrument comprising: a clock pulse generator; a counrer connected to receive clock pulSes from said clock pulse generator, said counter having a plurality of flip-flop circuits; a rhythm pattern pulse generator connected to receive output signals from the respective flip-flop circuits in said counter for producing a plurality of rhythm signals each having a predetermined rhythm pattern; a rhythm selection circuit including a plurality of input terminals connected to receive said plurality of said rhythm signals respectively, an output terminal, and switching elements connected between said output terminal and said respective input terminals; a tone generator cancellation circuit having an input terminal connected to said output terminal of said rhythm selection circuit, a plurality of output terminals, and switching elements connected between said input terminal and said respective output terminals; percussion tone generators connected to said output terminals of said tone generator cancellation circuit respectively; a reset circuit having a flip-flop circuit an output of which is coupled to the respective flip-flop circuits in said counter, said reset circuit setting or resetting the respective flipflop circuits in said counter in response to control signals from an external control signal source; a rhythm selecting pulse generator for producing sequentially pulses in response to said control signals, each of said sequential pulses being applied to each of said switching elements in said rhythm selection circuit to render said switching elements conductive sequentially; a percussion tone generator cancelling pulse generator for producing sequential pulses in response to said control signals, each of said sequential pulses being applied to each of said switching elements in said tone generator cancellation circuit to render said switching elements nonconductive sequentially; and a manual switch connected to receive said control signals from said external control signal source for selectively supplying said control signals to said reset circuit, rhythm selecting pulse generator and said percussion tone generator cancelling pulse generator.
Claim 2
Dependent Claim
314 words
An electronic musical instrument comprising: a clock pulse generator; a counrer connected to receive clock pulSes from said clock pulse generator, said counter having a plurality of flip-flop circuits; a rhythm pattern pulse generator connected to receive output signals from the respective flip-flop circuits in said counter for producing a plurality of rhythm signals each having a predetermined rhythm pattern; a rhythm selection circuit including a plurality of input terminals connected to receive said plurality of said rhythm signals respectively, an output terminal, and switching elements connected between said output terminal and said respective input terminals; a tone generator cancellation circuit having an input terminal connected to said output terminal of said rhythm selection circuit, a plurality of output terminals, and switching elements connected between said input terminal and said respective output terminals; percussion tone generators connected to said output terminals of said tone generator cancellation circuit respectively; a reset circuit having a flip-flop circuit an output of which is coupled to the respective flip-flop circuits in said counter, said reset circuit setting or resetting the respective flipflop circuits in said counter in response to control signals from an external control signal source; a rhythm selecting pulse generator for producing sequentially pulses in response to said control signals, each of said sequential pulses being applied to each of said switching elements in said rhythm selection circuit to render said switching elements conductive sequentially; a percussion tone generator cancelling pulse generator for producing sequential pulses in response to said control signals, each of said sequential pulses being applied to each of said switching elements in said tone generator cancellation circuit to render said switching elements nonconductive sequentially; and a manual switch connected to receive said control signals from said external control signal source for selectively supplying said control signals to said reset circuit, rhythm selecting pulse generator and said percussion tone generator cancelling pulse generator.
References Cited (Backward Citations)
US3546355A
Cited
US3585891A
Cited
US3567838A
Cited
US3637914A
Cited
US3646242A
Cited
US3629480A
Cited
US3763305A
Cited
US3760088A
Cited
US3764722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |