| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance an effect of simulating a natural musical instrument by making a main body part constitution wall member of an electronic keyboard instrument have a function similar to a soundboard. <P>SOLUTION: In a casing 2 of a main body part of an electronic piano 1, a keyboard 13, a sound source device 43, a controller 16, and a pair of right and left speakers for high note 17 and 18 are housed. A vibration unit 23 is fixed to a key bed 4 arranged in a bottom part of the casing 2 to support the keyboard 13. The sound source device 43 outputs a musical sound signal based on performance with the keyboard 13. The musical sound signal to which an effect is imparted by means of a digital arithmetic processing by a DSP 45 is amplified by an amplifier to be supplied to the speakers 17, 18 and the vibration unit 23. The speakers 17 and 18 generate musical sound according to the musical sound signal, and the vibration unit 23 vibrates the key bed 4 so as to generate the musical sound as a soundboard. <P>COPYRIGHT: (C)2009,JPO&INPIT |
