| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a wrong attenuation caused by a wrong key-off detection. <P>SOLUTION: An envelope is slowly attenuated according to detection of sound stop operation, and when detecting depression of the same key in a keyboard, to stop sound during the slow attenuation operation, the wrong attenuation operation is effectively prevented, which is caused by the wrong key-off detection when touch information is detected, by maintaining a slow envelope attenuation characteristic during the operation. <P>COPYRIGHT: (C)2008,JPO&INPIT |
