Music – Instruments
Patent
1979-09-18
1980-10-14
Witkowski, S. J.
Music
Instruments
84 103, 84 122, G10H 106, G10H 700
Patent
active
042274338
ABSTRACT:
An electronic musical instrument is of a waveshape memory read out type which includes a waveshape memory device for storing amplitude values at respective sampling points in one period of a new musical tone waveshape to be generated subsequent to a present musical tone waveshape stored in another waveshape memory device, first calculating means for calculating differences in amplitude values at respective sampling points stored in corresponding addresses of the two waveshape memory devices respectively; renewal rate control means for generating a waveshape renewal signal having a period corresponding to difference information produced by the first calculating means, and renewal means for effecting renewal of the memory content of said another waveshape memory device at a rate corresponding to the period of the waveshape renewal signal.
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patent: 4036096 (1977-07-01), Tomisawa et al.
patent: 4085644 (1978-04-01), Deutsch et al.
patent: 4111090 (1978-09-01), Deutsch
patent: 4127047 (1978-11-01), Tomisawa
patent: 4130043 (1978-12-01), Niimi
patent: 4133241 (1979-01-01), Niimi et al.
patent: 4135424 (1979-01-01), Okamoto
patent: 4138915 (1979-02-01), Nagai et al.
patent: 4142432 (1979-03-01), Kameyama et al.
patent: 4183275 (1980-01-01), Niimi et al.
Nippon Gakki Seizo Kabushiki Kaisha
Witkowski S. J.
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