| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric musical instrument capable of imparting different sound effects to outputs of keyboards of different stages separately, and imparting and setting sustain effects to individual keyboards of a plurality of stages. <P>SOLUTION: Adders 2a-2n add outputs of upper and lower stages of one of resources 1a-1n having the same interval, and absolute value circuits ABS[x]3a-3n calculate absolute values of output values of the outputs; and low-pass filters LPF[x]4a-4n extract low frequency-side musical sound data to monitor, by a CPU, phase matching and shifting from acquired amplitude values. Consequently, when an output of amplitude acquisition means is not a maximum value, one readout address of an address generator is changed in response to a readout instruction of the CPU, and one-side frequencies of the one set of resources 1a-1n. <P>COPYRIGHT: (C)2013,JPO&INPIT |
