US3838202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for imparting to a musical tone a tone color varied with time
Assignee: Nippon Gakki Co Ltd
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Filing: 1973-09-17
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Granted: 1974-09-24
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Expires: 1993-09-17
Abstract
Abstract A device comprises a variable delay circuit for delaying a musical tone signal; means for varying a delay time of the variable delay circuit; a frequency spectrum modifier to which an output signal from the delay circuit is applied; and a feedback loop for feeding an output of the frequency spectrum modifier back to the input side of the variable delay circuit; whereby a musical tone signal to which is applied a tone color varied with time is obtained from the output side of the variable delay circuit.
Inventors
- 👤 A Nakada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:34
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
119 words
A device for imparting a tone color to a musical tone comprising: a delay circuit for delaying a musical tone signal a prescribed time; a non-linear circuit means coupled to an output of said delay circuit for modifying the frequency content of an output signal from the delay circuit, said non-linear circuit means defining a signal path for said output signal and including a diode coupled to the signal path defined thereby; and a feedback loop for feeding an output of said non-linear circuit means back to the input side of the delay circuit; whereby a musical tone signaL to which is applied a tone color varied with time is obtained from the output side of the delay circuit.
Claim 2
Independent Claim
119 words
A device for imparting a tone color to a musical tone comprising: a delay circuit for delaying a musical tone signal a prescribed time; a non-linear circuit means coupled to an output of said delay circuit for modifying the frequency content of an output signal from the delay circuit, said non-linear circuit means defining a signal path for said output signal and including a diode coupled to the signal path defined thereby; and a feedback loop for feeding an output of said non-linear circuit means back to the input side of the delay circuit; whereby a musical tone signaL to which is applied a tone color varied with time is obtained from the output side of the delay circuit.
Claim 3
Dependent Claim
21 words
The device according to claim 1 in which said delay circuit is a variable delay circuit having a variable delay time.
Claim 4
Dependent Claim
49 words
The device according to claim 2 in which said variable delay circuit includes a bucket brigade device; a voltage controlled oscillator for applying a pulse signal to said bucket brigade device; and a variable resistor for varying the frequency of an output pulse signal of said voltage controlled oscillator.
Claim 5
Dependent Claim
19 words
The device according to claim 1 in which said nonlinear circuit comprises a half-wave rectifier circuit having one diode.
Claim 6
Dependent Claim
28 words
The device according to claim 1 in which said nonlinear circuit comprises a slicer circuit having two diodes connected in parallel with each other and with reversed polarity.
Claim 7
Dependent Claim
28 words
The device according to claim 1 in which said nonlinear circuit comprises a clipper circuit having two diodes connected in parallel with each other and with reversed polarity.
Claim 8
Dependent Claim
28 words
The device according to claim 1 wherein said diode of said non-linear circuit means is coupled in series with said signal path defined by said non-linear circuit means.
Claim 9
Dependent Claim
28 words
The device according to claim 1 wherein said diode of said non-linear circuit means is coupled in parallel with said signal path defined by said non-linear circuit means.
Claim 10
Independent Claim
131 words
A device comprising: a switch for selectively coupling out an output of a tone coloring circuit of an electronic musical instrument and an output of an electric musical instrument; a delay circuit to which a signal from the switch is applied; a frequency spectrum modifier to which an output of the delay circuit is applied; a variable resistor for controlling the level of a signal supplied from the delay circuit to the frequency spectrum modifier; an amplifier coupling the output of the frequency spectrum modifier to the input side of the delay circuit and amplifying the output of the frequency spectrum modifier; and means for generating a musical tone signal by amplifying the output of the delay circuit; whereby a tone color varied with time is imparted to the musical tone.
Claim 11
Independent Claim
131 words
A device comprising: a switch for selectively coupling out an output of a tone coloring circuit of an electronic musical instrument and an output of an electric musical instrument; a delay circuit to which a signal from the switch is applied; a frequency spectrum modifier to which an output of the delay circuit is applied; a variable resistor for controlling the level of a signal supplied from the delay circuit to the frequency spectrum modifier; an amplifier coupling the output of the frequency spectrum modifier to the input side of the delay circuit and amplifying the output of the frequency spectrum modifier; and means for generating a musical tone signal by amplifying the output of the delay circuit; whereby a tone color varied with time is imparted to the musical tone.
Claim 12
Dependent Claim
27 words
The device according to claim 9 in which said frequency spectrum modifier comprises means for modifying the frequency content of the output signal from the delay circuit.
Claim 13
Dependent Claim
16 words
The device according to claim 10 wherein said frequency content modifying means includes a non-linear circuit.
Claim 14
Dependent Claim
14 words
The device according to claim 10 wherein said non-linear circuit comprises diode rectifying means.
Claim 15
Dependent Claim
16 words
The device according to claim 10 wherein said frequency content modifying means includes a filter circuit.
Claim 16
Dependent Claim
17 words
The device according to claim 13 in which said filter circuit is a low pass filter circuit.
Claim 17
Dependent Claim
30 words
The device according to claim 9 in which said variable resistor is coupled in series between an output of the delay circuit and the input of the frequency spectrum modifier.
Claim 18
Independent Claim
100 words
A device for imparting a tone color to a musical tone comprising: a delay circuit for delaying a musical tone signal a prescribed time; a filter circuit means having a predetermined pass-band coupled to an output of said delay circuit for modifying the frequency content of an output signal from the delay circuit; and a feedback loop for feeding an output of said filter circuit means back to the input side of the delay circuit; whereby a musical tone signal to which is applied a tone color varied with time is obtained from the output side of the delay circuit.
Claim 19
Independent Claim
100 words
A device for imparting a tone color to a musical tone comprising: a delay circuit for delaying a musical tone signal a prescribed time; a filter circuit means having a predetermined pass-band coupled to an output of said delay circuit for modifying the frequency content of an output signal from the delay circuit; and a feedback loop for feeding an output of said filter circuit means back to the input side of the delay circuit; whereby a musical tone signal to which is applied a tone color varied with time is obtained from the output side of the delay circuit.
Claim 20
Dependent Claim
18 words
The device according to claim 16 in which said filter circuit means comprises a low pass filter circuit.
Claim 21
Dependent Claim
17 words
The device according to claim 16 in which said filter circuit means comprises a band-pass filter circuit.
Claim 22
Dependent Claim
18 words
The device according to claim 16 in which said filter circuit means comprises a high pass filter circuit.
Claim 23
Dependent Claim
21 words
The device according to claim 16 in which said delay circuit is a variable delay circuit having a variable delay time.
Claim 24
Dependent Claim
49 words
The device according to claim 16 in which said variable delay circuit includes a bucket brigade device; a voltage controlled oscillator for applying a pulse signal to said bucket brigade device; and a variable resistor for varying the frequency of an output pulse signal of said voltage controlled oscillator.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |