Music – Instruments
Patent
1977-10-17
1981-08-11
Truhe, J. V.
Music
Instruments
84 103, 84 125, 84DIG11, G10H 100, G10F 100, G10H 104
Patent
active
042827850
ABSTRACT:
An electronic musical instrument which is provided with a note frequency data memory for storing note frequency data corresponding to data of key switch depression through a key code register, a note frequency data register for latching and storing the data from the note frequency data memory by a time division pulse from a time division control signal generator, an octave data register for latching and storing octave data from the key code register by the time division pulse from the time division control signal generator, a frequency generator composed of a programmable counter supplied with the output from the note frequency data register to provide a frequency corresponding thereto, a frequency divider array supplied with the frequency and a decoder supplied with the output from the octave data register, the outputs from the respective output ends of the frequency divider array being selected by the output from the decoder in accordance with the octave data, and a musical waveform generator composed of filter circuits corresponding to respective musical instrument sounds and supplied with the output from the frequency generator to provide a musical signal.
REFERENCES:
patent: 3610799 (1969-10-01), Watson
patent: 3610800 (1971-10-01), Deutsch
patent: 3842702 (1974-10-01), Tsundoo
patent: 4063484 (1977-12-01), Robinson
patent: 4067254 (1978-01-01), Deutsch et al.
patent: 4114496 (1978-09-01), Deutsch
S. H. Dolding, Musical Octave Note Synthesiser, Electronics Australia, vol. 36, No. 2, pp. 44-45, May 1974.
Aoyama Tohru
Ezawa Sadaaki
Hashizume Hikaru
Kameyama Seiji
Kondo Tatsunori
Conklin John B.
Kabushiki Kaisha Kawai Gakki Seisakusho
Truhe J. V.
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