| 摘要 |
PROBLEM TO BE SOLVED: To nearly simultaneously output sound signals of plural intervals answering to input sound signals by containing at least the sound signal interval converted with an interval conversion circuit, selecting any one from plural sound signals with different intervals and outputting it. SOLUTION: An interval switch circuit 21 connects an output terminal of an A/D converter 13 and the output terminal of an interval conversion circuit 14 to two input terminals, and connects its output terminal to a D/A converter 15 for selectively selecting/outputting these output signals. Further, a switch time control circuit 22 controls a time interval that the interval switch circuit 21 switches the selection between two output signals according to the signal supplied to a Time input pin. In such a case, the interval switch circuit 21 selects alternately the outputs of the A/D converter 13 and interval conversion circuit 14 at the time ratio of 1 to 1 of the time specified by the switch time control circuit 22 to supply it to the D/A converter 15. |
