Manner and device null in order to generate the ripple mark which differs to the occasion where the musical tone is synthesized

摘要

(57) Abstract In one execution feature, this invention, following to the ripple mark of specification of desire, offers the multiplexer/the shifter (304) which alters phase angle entry (300). The burian logic gates (306, 308 and 310) following to the ripple mark of specification of desire on the basis of two most significant bits of phase angle entry (300), furthermore alter multiplexer/shifter output. Lastly, the multiplier (312), multiplying the output of the burian logic gates in multiplexer/shifter output, the ripple mark of desire is generated. This invention can adopt the bank of the exclusive OR gate and the AND gate as burian logic. Other execution feature of this invention offers the clipping manner which generates the ripple mark of desire from phase angle entry. Phase angle entry multiplexing/is shifted on the basis of the ripple mark of specification of desire. The result of multiplexing/shifting following to the ripple mark of specification of desire next, on the basis of two most significant bits of phase angle entry, is altered by the burian logic gates. Next, each other multiplying the result of multiplexing/shift and burian logic, it generates the ripple mark of desire.