Music – Instruments
Patent
1981-10-26
1984-03-20
Isen, F. W.
Music
Instruments
84 101, G10H 106
Patent
active
044373791
ABSTRACT:
Keys of a keyboard are divided into a plurality of tone ranges and a plurality of musical tone waveforms regarding specific ones of the divided tone ranges are stored in a waveform memory device. A number of the plurality of musical tone waveforms is smaller than the number of the divided tone ranges. An address signal generator is provided which generates an address signal having a repetition period corresponding to a tone pitch of a depressed key and supplies the address signal to the waveform memory device, and an arithmetic operating circuit is provided which selects ones from among the plurality of musical tone waveforms and mixes the selected ones of a mixing ratio, thereby forming a new musical tone waveform. The selected ones and the mixing ratio are predetermined corresponding to each of the tone ranges. Different tone colors of a number which is more than the number of the waveforms are realized for the respective tone ranges just like in a natural musical instrument.
REFERENCES:
patent: 3515792 (1970-06-01), Deutsch
patent: 4213366 (1980-07-01), Mimi et al.
patent: 4224856 (1980-09-01), Ando et al.
patent: 4227435 (1980-10-01), Ando et al.
Isen F. W.
Nippon Gakki Seizo Kabushiki Kaisha
VanOphem Remy J.
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