| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device that outputs musical sound information by correcting acceleration according to change of a fluctuation range of acceleration. <P>SOLUTION: An electronic keyboard musical instrument 1 updates a lower limit value of a Min value memory 4a and an upper limit value of a Max memory 4b, by using a raw acceleration calculated by key pressing. Acceleration is calculated by normalizing the calculated raw acceleration by using the lower limit value of the Min value memory 4a and the upper limit value of the Max memory 4b. and according to the acceleration, musical sound is output. That is, even if the fluctuation range of the calculated raw acceleration is changed, the acceleration which is corrected (normalized) according to the fluctuation range of the changed raw acceleration is calculated. Thereby, even if the fluctuation range of the raw acceleration calculated by key pressing is changed by time change of the keyboard 6 or change of a key pressing person of the keyboard 6 etc., musical sound information is output by correcting the acceleration according to change of the fluctuation range. <P>COPYRIGHT: (C)2011,JPO&INPIT |
