| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain an input control apparatus capable of canceling sound generation delay. <P>SOLUTION: The input control apparatus detects a generation cycle of an interrupt signal INTa generated for each zero crossing of a wave form after detecting a maximum peak of touch sound arising from fret operation which is performed ahead of picking, that is, a cycle of the touch sound TIME1, is detected, and a generation cycle of an interrupt signal INTb generated for each zero crossing of the wave form after detecting a minimum peak of the touch sound by INTb interrupt process, that is, a cycle of the touch sound TIME2. When the detected cycle TIME1 and the cycle TIME2 are approximately coincident, musical sound of height corresponding to the cycle TIME1 is generated. Thereby, the sound generation delay is canceled, since a sound generating pitch is determined earlier than pitch extraction from picking sound arising in string picking. <P>COPYRIGHT: (C)2007,JPO&INPIT |
