JPS5448225A - Electronic musical instrument - Google Patents

Abstract

PURPOSE: To produce musical tones corresponding to play states and produce respective musical tones of different musical tone elements at the playing of plural tones by controlling musical tone forming parts with required voltages according to the play states.

CONSTITUTION: Pitch voltages and key-on signals by key touching are applied as control signals via channel processor or the like to the corresponding channels 50a thru 50b, 51a thru 51b of musical tone signal forming parts 50, 51. This causes the musical tones of controlled musical tone elements to be produced from the channels 50a thru 50b, 51a thur 51b provided with envelope generating circuits 56 thru 58, pitch controlling voltage control frequency oscillation circuit 52, voltage control variable filters 53, 54 of low-, high-pass characteristics for timbre controlling, voltage control type variable gain amplifier 55 for volume envelope controlling, etc. When key touching of plural keys is detected, a gate 85 opens, through which the different control voltages from a musical tone signal element control signal generator 80 are applied via control signal distributors 90, 91 to the respective forming parts 50, 51, whereby the musical tones corresponding to plural plays are formed and the intricate musical tones are generated by the differences in the plural tone control voltages.

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