US3854367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual vibrato system
Assignee: Motorola Solutions Inc
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Filing: 1973-09-04
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Granted: 1974-12-17
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Expires: 1993-09-04
Abstract
Abstract A vibrato system for a musical instrument including a first oscillator operating at a first frequency and a second oscillator operating at a second frequency that is a multiple of the first frequency. Means are provided to synchronize the oscillations produced by the oscillators and to combine the output signals thereof.
Inventors
- 👤 D Ryon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:12
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A system for producing a non-sinusoidal vibrato signal having a periodic complex waveform, comprising: a first low frequency vibrato oscillator including a frequency determining circuit tuned to a first frequency for providing first oscillations having the first predetermined frequency; a second low frequency vibrato oscillator including a frequency determining circuit tuned to a second frequency higher than said first frequency and a predetermined even multiple thereof for providing second oscillations having the second predetermined frequency; a coupling circuit connecting said first and second oscillators for synchronizing in phase locked relation said second oscillations to the predetermined frequency multiple of said first oscillations; and a combining circuit connected to said first and second oscillators for receiving and combining said first and second oscillations, said combining circuit having an output terminal for providing said combined first and second oscillations to provide said periodic complex waveform.
Claim 2
Independent Claim
143 words
A system for producing a non-sinusoidal vibrato signal having a periodic complex waveform, comprising: a first low frequency vibrato oscillator including a frequency determining circuit tuned to a first frequency for providing first oscillations having the first predetermined frequency; a second low frequency vibrato oscillator including a frequency determining circuit tuned to a second frequency higher than said first frequency and a predetermined even multiple thereof for providing second oscillations having the second predetermined frequency; a coupling circuit connecting said first and second oscillators for synchronizing in phase locked relation said second oscillations to the predetermined frequency multiple of said first oscillations; and a combining circuit connected to said first and second oscillators for receiving and combining said first and second oscillations, said combining circuit having an output terminal for providing said combined first and second oscillations to provide said periodic complex waveform.
Claim 3
Dependent Claim
27 words
A system as recited in claim 1 wherein each frequency determining circuit includes a twin T resistance capacitance network and wherein said coupling circuit includes a resistor.
Claim 4
Dependent Claim
16 words
A system as recited in claim 2 wherein said combining circuit includes a plurality of resistors.
Claim 5
Dependent Claim
34 words
A system as recited in claim 3 wherein the frequency determining network of said second oscillator is tuned to twice the frequency to which the frequency determining circuit of said first oscillator is tuned.
Claim 6
Dependent Claim
41 words
A system as recited in claim 1 further including a musical tone producing system connected to said combining circuit, said tone producing system being responsive to said non-sinusoidal signal for periodically changing the frequency of said musical tones in accordance therewith.
Claim 7
Dependent Claim
42 words
A system as recited in claim 5 wherein said muscial tone producing system includes a master oscillator connected to said combining circuit and responsive to said non-sinusoidal signal, and dividers connected to said master oscillator and responsive thereto for generating musical tones.
References Cited (Backward Citations)
US2148478A
Cited
US2484372A
Cited
US2859346A
Cited
US2827569A
Cited
US2835870A
Cited
US3257495A
Cited
US3490327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |