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Publication numberUS3601518 A
Publication typeGrant
Publication dateAug 24, 1971
Filing dateOct 6, 1969
Priority dateOct 6, 1969
Publication numberUS 3601518 A, US 3601518A, US-A-3601518, US3601518 A, US3601518A
InventorsCharles M Hill
Original AssigneeCharles M Hill
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Musical instrument and method employing reference frequency source and controlled period multipliers therefor
US 3601518 A
Abstract  available in
Description  available in
Claims  available in
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2879387 *Nov 25, 1953Mar 24, 1959Kahn Leonard RMulti-channel phase locked tone converter
US3258677 *Nov 8, 1961Jun 28, 1966the United States of America as represented by the Secretary of the Navy Filed NovMagnetostriction delay line frequency divider with recirculating loops
US3293561 *Sep 27, 1965Dec 20, 1966Rutherford Electronics CoFrequency synthesizer
US3443017 *Dec 2, 1965May 6, 1969Baldwin Co D HElectronic organ system
US3445578 *Jun 27, 1966May 20, 1969Baldwin Co D HChiff and tone generator
US3467861 *May 2, 1967Sep 16, 1969Industrial Nucleonics CorpWide frequency range single-control oscillator
US3469109 *Apr 14, 1966Sep 23, 1969Hammond Organ CoMusical instrument frequency divider which divides by two and by four
US3489842 *Jun 24, 1966Jan 13, 1970Hammond CorpElectrical musical instrument
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3701040 *Jan 11, 1971Oct 24, 1972Hammond CorpElectronic musical instrument master oscillator with provision for frequency control
US3702370 *May 19, 1971Nov 7, 1972Hallman John Ray JrDigital tone generator system for electronic organ employing a single master oscillator
US3764721 *Sep 30, 1971Oct 9, 1973Motorola IncElectronic musical instrument
US3790693 *Dec 6, 1972Feb 5, 1974Nippon Musical Instruments MfgTone keying and synthesizing system for electronic musical instrument
US3795754 *Mar 1, 1972Mar 5, 1974Nippon Musical Instruments MfgElectronic musical instruments with two master oscillators
US3808345 *Jun 28, 1972Apr 30, 1974Philips CorpApparatus for producing tones of a musical scale
US3808347 *Jun 5, 1973Apr 30, 1974IttElectronic music tone generator with pulse generator and frequency dividers
US3809787 *Dec 4, 1972May 7, 1974Nippon Musical Instruments MfgTone generator system
US3824326 *Jun 6, 1973Jul 16, 1974Kawai Musical Instr Mfg CoVibrato signal generating apparatus for an electronic musical instrument
US3828109 *Feb 20, 1973Aug 6, 1974Chicago Musical Instr CoChorus generator for electronic musical instrument
US3878749 *Dec 12, 1972Apr 22, 1975Allen Organ CoWalsh function tone generator and system
US3885489 *Mar 14, 1973May 27, 1975Kenju Sangyo Kabushiki KaishaElectronic musical instrument having keyboards
US4011784 *Feb 24, 1975Mar 15, 1977Pioneer Electronic CorporationTransposition apparatus for an electronic musical instrument
US4056995 *Mar 31, 1975Nov 8, 1977D. H. Baldwin CompanySingle master tone generator
US4063484 *Oct 20, 1975Dec 20, 1977Kimball International, Inc.Method and apparatus for generating tone signals for a musical instrument
U.S. Classification84/675, 984/381, 84/DIG.110, 84/706
International ClassificationG10H5/06
Cooperative ClassificationG10H5/06, G10H2210/496, Y10S84/11
European ClassificationG10H5/06