Automatic arpeggio apparatus in electronic musical instrument

Details Automatic arpeggio apparatus in electronic musical instrument Automatic arpeggio apparatus in electronic musical instrument

G - Physics

10

H

84/1.2

G10H 1/02 (2006.01) G10H 1/28 (2006.01) G10H 1/38 (2006.01)

Patent

CA 1062055

ABSTRACT OF THE DISCLOSURE The present invention provides an automatic arpeggio apparatus for an electronic musical instrument. A pulse generator repeatedly generates pulses upon depression of a key which are applied to a timing pulse generator. A memory circuit generates musical scale digital signals in response to timing pulses obtained from the timing pulse generator and the digital signals are fed to a D-A converter which converts them into analogue signals. A calculation circuit then adds to or subtracts from these analogue singnals a voltage at a level corresponding to a key depressed and a voltage controlled type oscillator produces an output frequency dependent upon the output voltage of the calculation circuit. In this manner, depression of a signal key causes the appropriate arpeggio to be generated.

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