US3757022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pitch articulation system for an electronic organ
Assignee: MUSICCO LLC
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Filing: 1971-09-16
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Granted: 1973-09-04
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Expires: 1991-09-16
Abstract
Abstract A pitch articulation system for an electronic organ in which the normal organ sound or voice receives an additional low frequency amplitude or frequency modulation for a short period of time upon depressing each key. Upon depressing a key, a pulse forming circuit is triggered which produces a pulse of a selected duration. This pulse keys a vibrato or a tremolo oscillator for a period of time equal to the pulse''s duration.
Inventors
- 👤 J Markowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:31
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A pitch articulation system for use in an electronic musical instrument having keys and a vibrato system, comprising: switch means activated by said keys in response to said keys being depressed; a pulse forming circuit energized by said switch means in response to said switch means being activated, said pulse forming circuit generating a pulse when energized; and means for enabling said vibrato system of said electronic musical instrument in response to the pulse of said pulse forming circuit for the duration of the pulse generated by said pulse forming circuit.
Claim 2
Dependent Claim
91 words
A pitch articulation system for use in an electronic musical instrument having keys and a vibrato system, comprising: switch means activated by said keys in response to said keys being depressed; a pulse forming circuit energized by said switch means in response to said switch means being activated, said pulse forming circuit generating a pulse when energized; and means for enabling said vibrato system of said electronic musical instrument in response to the pulse of said pulse forming circuit for the duration of the pulse generated by said pulse forming circuit.
Claim 3
Dependent Claim
16 words
A pitch articulation system as recited in claim 1 wherein said enabling means is a switch.
Claim 4
Dependent Claim
17 words
A pitch articulation system as recited in claim 1 wherein said enabling means is an electronic switch.
Claim 5
Dependent Claim
23 words
A pitch articulation system as recited in claim 1 wherein said pulse forming circuit generates a pulse having a duration of 70 milliseconds.
Claim 6
Dependent Claim
91 words
A pitch articulation system for use in an electronic musical instrument having keys and a tremolo system, comprising: switch means activated by said keys in response to said keys being depressed; a pulse forming circuit energized by said switch means in response to said switch means being activated, said pulse forming circuit generating a pulse when energized; and means for enabling said tremolo system of said electronic musical instrument in response to the pulse of said pulse forming circuit for the duration of the pulse generated bY said pulse forming circuit.
Claim 7
Dependent Claim
91 words
A pitch articulation system for use in an electronic musical instrument having keys and a tremolo system, comprising: switch means activated by said keys in response to said keys being depressed; a pulse forming circuit energized by said switch means in response to said switch means being activated, said pulse forming circuit generating a pulse when energized; and means for enabling said tremolo system of said electronic musical instrument in response to the pulse of said pulse forming circuit for the duration of the pulse generated bY said pulse forming circuit.
Claim 8
Dependent Claim
16 words
A pitch articulation system as recited in claim 1 wherein said enabling means is a switch.
Claim 9
Dependent Claim
17 words
A pitch articulation system as recited in claim 1 wherein said enabling means is an electronic switch.
Claim 10
Dependent Claim
23 words
A pitch articulation system as recited in claim 5 wherein said pulse forming circuit generates a pulse having a duration of seventy milliseconds.
Claim 11
Dependent Claim
135 words
An electronic musical instrument having keys, a wave shape memory for storing digital representations of musical sound at sampled points, a frequency synthesizer for producing a frequency signal for reading digital representations out of said wave shape memory at a rate related to the key operated to form a digital signal, a digital to analog converter for converting said digital signal to an audio signal, wherein the improvement comprises: a pulse forming circuit energized by depressing one of said keys, said pulse forming circuit generating a pulse when energized; a tremolo oscillator, said tremolo oscillator being energized by the pulse generated by said pulse forming circuit; means for applying the output of said tremolo oscillator to the digital signal being read out of said wave shape memory upon operation of said one of said keys.
Claim 12
Dependent Claim
135 words
An electronic musical instrument having keys, a wave shape memory for storing digital representations of musical sound at sampled points, a frequency synthesizer for producing a frequency signal for reading digital representations out of said wave shape memory at a rate related to the key operated to form a digital signal, a digital to analog converter for converting said digital signal to an audio signal, wherein the improvement comprises: a pulse forming circuit energized by depressing one of said keys, said pulse forming circuit generating a pulse when energized; a tremolo oscillator, said tremolo oscillator being energized by the pulse generated by said pulse forming circuit; means for applying the output of said tremolo oscillator to the digital signal being read out of said wave shape memory upon operation of said one of said keys.
Claim 13
Dependent Claim
15 words
An electronic musical instrument as recited in claim 9 wherein said means includes stop tabs.
Claim 14
Dependent Claim
47 words
An electronic musical instrument as recited in claim 9 wherein said means includes an adder-subtracter circuit, said adder-subtracter circuit allowing the output of said tremolo oscillator to be added to the digital signal or subtracted from the digital signal by inverting the output of said tremolo oscillator.
Claim 15
Dependent Claim
24 words
An electronic musical instrument as recited in claim 9 wherein the pulse generated by said pulse forming circuit has a duration of 70 milliseconds.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |