Music – Instruments
Patent
1984-05-16
1985-12-31
Isen, Forester W.
Music
Instruments
328 14, 328 16, G10H 100
Patent
active
045613370
ABSTRACT:
A digital electronic musical instrument is constituted by detector, a phase angle, information generator and a musical tone generator. The detector detects an end portion of a period of a musical tone to be produced. The phase angle information generator repetitively generates phase angle information representing an instantaneous phase angle of the musical tone during from start to end of the period of the musical tone in response to the detection of the end portion of the period. The musical tone generator synthesizes the musical tone in accordance with the phase angle information. Operations of the detector, phase angle information generator and tone generator are performed on the basis of clock pulses having a predetermined frequency which is an integer multiple of a fundamental frequency of the musical tone to be produced, thereby realizing the so-called pitch synchronous system and simplifying the construction of the musical instrument.
REFERENCES:
patent: 3743755 (1973-07-01), Watson
patent: 4258602 (1981-03-01), Niimi et al.
patent: 4345500 (1982-08-01), Alonso et al.
patent: 4383462 (1983-05-01), Nagai et al.
Isen Forester W.
Nippon Gakki Seizo Kabushiki Kaisha
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