Music – Instruments – Electrical musical tone generation
Patent
1990-02-27
1992-08-25
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84616, 84627, 84633, G10H 1057, G10H 146, G10H 702, G10H 712
Patent
active
051408864
ABSTRACT:
A musical tone signal generating apparatus provides at least a waveform memory which stores a plurality of fundamental waveform data based on three-dimensional coordinate address system having three coordinate axes to which respective musical tone control parameters are assigned respectively. The desirable fundamental waveform data is read out at an address corresponding to a coordinate position determined by selecting desirable musical tone control parameters. Then, an interpolation operation is carried out on the fundamental waveform data which are sequentially read out so that an interpolated musical tone waveform signal is formed. The waveform of the interpolated musical tone waveform signal is similar to and intermediate to the waveforms of the fundamental waveform data to be synthesized. Thus, the interpolated musical tone waveform signal is converted into a musical tone signal, by which corresponding musical tone is to be sounded.
REFERENCES:
patent: 4566364 (1986-01-01), Katoh
patent: 4633749 (1987-01-01), Fujimori et al.
patent: 4779505 (1988-10-01), Suzuki
patent: 4907484 (1990-03-01), Suzuki et al.
Kato Mitsumi
Masaki Kazuo
Witkowski Stanley J.
Yamaha Corporation
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