US3603713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone color changing device for electronic musical instruments
Assignee: Nippon Gakki Co Ltd
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Filing: 1969-04-02
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Granted: 1971-09-07
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Expires: 1989-04-02
Abstract
Abstract A simple, versatile, and quickly operable tone color changing device comprising a combination of a variable means which may be a multiposition changeover switch or a plurality of variable resistors interlinked with an operable means such as a kneelever, and a selecting means preferably consisting of a multiposition, double-circuit changeover switch connected with two different tone color signal sources.
Inventors
- 👤 Akira Nakada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
In an electronic musical instrument including a signal source and means for producing two tone color signals from said signal source, a tone color changing device comprising a pair of inputs respectively receiving the two tone color signals, selector switch means connected to said inputs and having a first position in which the signals are mixed in equal amplitude proportions, and a second position permitting selective variation of relative proportions of the amplitudes of the signals, proportionselecting means connected to said second position of said selector switch and adapted to mix the signals in a predetermined proportion of their amplitudes, and output means connected to said first position of said selector switch means and to said proportion-selecting means.
Claim 2
Dependent Claim
118 words
In an electronic musical instrument including a signal source and means for producing two tone color signals from said signal source, a tone color changing device comprising a pair of inputs respectively receiving the two tone color signals, selector switch means connected to said inputs and having a first position in which the signals are mixed in equal amplitude proportions, and a second position permitting selective variation of relative proportions of the amplitudes of the signals, proportionselecting means connected to said second position of said selector switch and adapted to mix the signals in a predetermined proportion of their amplitudes, and output means connected to said first position of said selector switch means and to said proportion-selecting means.
Claim 3
Dependent Claim
45 words
A tone color changing device as defined in claim 1, wherein said proportion-selecting means comprises a two-position selecting switch, wherein in each of the two positions thereof one of the signals will be fed to said output means to the exclusion of the other signal.
Claim 4
Dependent Claim
48 words
A tone color changing device as defined in claim 2, wherein said selector switch means includes a third position connected with said proportion selecting switch in opposite manner to said second position, whereby said second and third positions together with said two-position selecting switch comprising reversing switch means.
Claim 5
Dependent Claim
29 words
A tone color changing device as defined in claim 3, wherein said selector switch means comprises a two-conductor three-position switch, and said proportion-selecting means comprises a two-conductor two-position switch.
Claim 6
Dependent Claim
49 words
A tone color changing device as defined in claim 1, wherein said proportion-selecting means comprises variable resistor means, whereby the mixed proportion of the amplitudes of the two signals may be adjusted over a continuous range from full strength of one signal to full strength of the other signal.
Claim 7
Dependent Claim
56 words
A tone color changing device as defined in claim 5, wherein said selector switch means includes a third position connected with said variable resistor means in opposite manner to said second position, whereby the relative proportions of the signals selected by said variable resistor means may be reversed by switching between said second and third positions.
Claim 8
Dependent Claim
39 words
A tone color changing device as defined in claim 6, wherein said selector switch means comprises a two-conductor three-position switch, and said variable resistor means comprises a pair of variable resistors ganged in reverse manner to form signal-balancing 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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |