| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic keyboard musical instrument which generates a clearer and wider musical sound of good quality and gives a feeling of excellent playing closer to an acoustic grand piano. <P>SOLUTION: The electronic keyboard musical instrument includes an upright type main body case 2, soundboards 23 and 33 provided to the main body case 2 while having main surfaces 23a and 33a exposed to the outside, and vibrators 25 and 35 which are provided to the soundboards 23 and 33 and vibrate the soundboards 23 and 33 as keys are pressed to generate a musical sound. <P>COPYRIGHT: (C)2009,JPO&INPIT |
