US3565996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural keyboard electronic musical instrument with balancer and reverberation arrangement
Assignee: Nippon Gakki Co Ltd
•
Filing: 1969-07-14
•
Granted: 1971-02-23
•
Expires: 1989-07-14
Abstract
Abstract In an electronic musical instrument including two keyboard sections, signals from each section are supplied to a first balancer circuit which controls the proportion of signal intensities which appear at two lines each corresponding to each of the sections, then the signals of the two lines are on the one hand mixed directly and on the other hand fed to a second balancer circuit which mixing the two signals further controls the mixing proportion and in turn fed to a reverberation device, and the directly mixed signal and the output signal from the reverberation device are mixed and supplied to the following stage of the circuit.
Inventors
- 👤 Shoichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:22
CPC Classifications
G; G10; G10H; G10H1/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
In an electronic musical instrument having at least two keyboard sections; a balancer arrangement comprising in combination, means for respectively leading signals from said keyboard sections to corresponding two lines and controlling relative intensities of said signals on said two lines, means for mixing said signals to obtain a first mixed signal, means for mixing the signals from said two lines and controlling a mixing proportion thereof to obtain a second mixed signal, a reverberation device which receives said second mixed signal and produces a reverberatory signal, and means for translating said first mixed signal and said reverberatory signal into sounds.
Claim 2
Dependent Claim
101 words
In an electronic musical instrument having at least two keyboard sections; a balancer arrangement comprising in combination, means for respectively leading signals from said keyboard sections to corresponding two lines and controlling relative intensities of said signals on said two lines, means for mixing said signals to obtain a first mixed signal, means for mixing the signals from said two lines and controlling a mixing proportion thereof to obtain a second mixed signal, a reverberation device which receives said second mixed signal and produces a reverberatory signal, and means for translating said first mixed signal and said reverberatory signal into sounds.
Claim 3
Dependent Claim
87 words
In an electronic musical instrument as set forth in claim 1, a balancer wherein said means for mixing and controlling the mixing proportion of the signals from said two lines in a second mixed signal comprises a reverberation balancing resistance connected between said two lines with means for variably connecting said reverberation device to said reverberation balancing resisTance for varying the resistance between each respective line and said variable connection inversely relative to the proportion of the signal from the respective line in said second mixed signals.
Claim 4
Dependent Claim
66 words
In an electronic musical instrument as set forth in claim 1, a balancer wherein said means for controlling relative signal intensities on said two lines comprises an interconnection therebetween including a variable resistance means connected between said two lines and inversely variably connected between both of said lines and the electrical return therefor with a minimum fixed resistance between each respective line and its electrical return.
Claim 5
Dependent Claim
87 words
In an electronic musical instrument as set forth in claim 3, a balancer wherein said means for mixing and controlling the mixing proportion of the signals from said two lines in a second mixed signal comprises a reverberation balancing resistance connected between said two lines with means for variably connecting said reverberation device to said reverberation balancing resistance for varying the resistance between each respective line and said variable connection inversely relative to the proportion of the signal from the respective line in said second mixed signal.
Claim 6
Dependent Claim
28 words
In an electronic musical instrument as set forth in claim 1, variable resistance means connecting the output of said reverberation device to the input of said translating means.
Claim 7
Dependent Claim
98 words
In an electronic musical instrument as set forth in claim 1, a balancer wherein said means for controlling relative signal intensities on said two lines comprises an interconnection between said means leading signals from said keyboard sections including a separate resistance connected between each keyboard section output and the electrical return therefor with each line connected to its respective resistance by a resistance variable connector, said resistance variable connectors being constructed concurrently adjustable for varying the resistance between one line and its electrical return inversely relative to the resistance between the other line and its respective electrical return.
Claim 8
Dependent Claim
87 words
In an electronic musical instrument as set forth in claim 6, a balancer wherein said means for mixing and controlling the mixing proportion of the signals from said two lines in a second mixed signal comprises a reverberation balancing resistance connected between said two lines with means for variably connecting said reverberation device to said reverberation balancing resistance for varying the resistance between each respective line and said variable connection inversely relative to the proportion of the signal from the respective line in said second mixed signal.
Claim 9
Dependent Claim
46 words
In an electronic musical instrument as set forth in claim 1, a balancer wherein said means for controlling relative signal intensities on said two lines comprises a separate variable resistance in said means leading signals from each respective keyboard section and being constructed concurrently inversely variable.
Claim 10
Dependent Claim
39 words
In an electronic musical instrument as set forth in claim 8, wherein said signal intensity control means includes a separate resistance connected between the output of each of said variable resistances and the electrical return for the respective line.
Claim 11
Dependent Claim
28 words
In an electronic musical instrument as set forth in claim 9, variable resistance means connecting the output of said reverberation device to the input of said translating means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |