US3602627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound pick up method and apparatus for stringed instruments
Assignee: Individual
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Filing: 1969-10-31
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Granted: 1971-08-31
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Expires: 1989-10-31
Abstract
Abstract Method and apparatus is provided for electrical amplification of sounds produced by stringed instruments by sensing vibrations of the strings at four longitudinally spaced positions and forming respective signals with the signals from alternate positions combined to provide two output signals that are subsequently converted to acoustical signals. Sensing of the vibrations is effected by conventional pickups each comprising a group of transducers equal in number to the number of strings of the particular instrument to which the technique disclosed herein may be adapted. Alternate ones of the pickups have their transducers electrically connected together and to the same output providing two output signals that are the resultant of the vibration of each string at two different locations.
Inventors
- 👤 William G L Mccammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:29
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; G10H3/182
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
The method of electrically amplifying acoustical vibrations produced by a multistringed musical instrument consisting of A. sensing mechanical oscillation of each of the several strings at at least four positions relatively spaced longitudinally along the strings and forming a respective electrical signal for each position with each signal including components formed by oscillation of all strings at that position, B. combining the electrical signals formed at alternate positions to form at least two electrical output signals, and C. independently translating each electrical output signal into a respective acoustical signal.
Claim 2
Independent Claim
89 words
The method of electrically amplifying acoustical vibrations produced by a multistringed musical instrument consisting of A. sensing mechanical oscillation of each of the several strings at at least four positions relatively spaced longitudinally along the strings and forming a respective electrical signal for each position with each signal including components formed by oscillation of all strings at that position, B. combining the electrical signals formed at alternate positions to form at least two electrical output signals, and C. independently translating each electrical output signal into a respective acoustical signal.
Claim 3
Dependent Claim
19 words
The method of claim 1 including subjecting each electrical output signal to operation of a respective electronic tone-control circuit.
Claim 4
Dependent Claim
19 words
The method of claim 2 including independently controlled amplification of each electrical output signal by respective electronic amplification circuits.
Claim 5
Dependent Claim
19 words
The method of claim 1 including independently controlled amplification of each electrical output signal by respective electronic amplification circuits.
Claim 6
Dependent Claim
162 words
In combination with a stringed musical instrument having a plurality of strings: apparatus for electronic amplification of mechanical oscillations of the strings comprising A. at least four electrical pickups disposed in longitudinally spaced relationship along the strings, each of said pickups including a plurality of electromechanical transducers equal in number to the number of strings and which are each disposed in coupled relationship to a respective string forming an electrical signal at the output thereof in response to oscillation of the strings with the transducers in each respective pick up disposed at the same longitudinal position relative to the strings, B. an electrical circuit connecting the output of each electromechanical transducer in alternately disposed pickups in parallel to provide at least two electrical output signals that are a composite of the signals of the several electromechanical transducers, and C. at least two electroacoustic transducers coupled with said electrical circuit for indepEndent translation of a respective electrical output signal to an acoustical signal.
Claim 7
Dependent Claim
162 words
In combination with a stringed musical instrument having a plurality of strings: apparatus for electronic amplification of mechanical oscillations of the strings comprising A. at least four electrical pickups disposed in longitudinally spaced relationship along the strings, each of said pickups including a plurality of electromechanical transducers equal in number to the number of strings and which are each disposed in coupled relationship to a respective string forming an electrical signal at the output thereof in response to oscillation of the strings with the transducers in each respective pick up disposed at the same longitudinal position relative to the strings, B. an electrical circuit connecting the output of each electromechanical transducer in alternately disposed pickups in parallel to provide at least two electrical output signals that are a composite of the signals of the several electromechanical transducers, and C. at least two electroacoustic transducers coupled with said electrical circuit for indepEndent translation of a respective electrical output signal to an acoustical signal.
Claim 8
Dependent Claim
39 words
The combination of claim 5 wherein said apparatus includes at least two tone control circuits which are each connected with said electrical circuit for selectively controlling the tone of the acoustical signal produced by a respective electrical output signal.
Claim 9
Dependent Claim
35 words
The combination of claim 6 wherein said apparatus includes at least two independently operable amplification circuits which are each connected with said electrical circuit for selectively controlling the amplitude of each respective electrical output signal.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |