| 摘要 |
<P>PROBLEM TO BE SOLVED: To make the start of soundings among a plurality of sound source circuits possible to be accurately timed to one another and to greatly increase the number of sounds which can begin to be generated at the same time at accurate timing. <P>SOLUTION: Key-on events which are generated are stored in a key-on register one after another. The timing of sampling cycles of waveform data is regarded as operation timing. In operation timing T1, sounding start information for a 1st sound source circuit is created from the contents of the key-on register and a key-on event is set in a key-on buffer. Further, a standby state is set. In operation timing T2, sounding start information for a 2nd sound source circuit is created from the contents of the key-on register and a key-on event is set in the key-on buffer; and the standby state of the 1st sound source circuit is reset. In subsequent operation timing T3, the 1st and 2nd sound source circuit begin to generate a plurality of musical sounds at the same time. <P>COPYRIGHT: (C)2004,JPO |
