Patent ID: 8962966
Filing Date: 2015-02-24
Classification: G10C,G10H,H04R

Abstract:
1. A keyboard instrument comprising: a plurality of keys; a soundboard; an excitation unit comprising a main body having a magnet and a vibration member having a voice coil arranged within a magnetic path space formed by the magnet, the vibration member being connected to the soundboard and the excitation unit driving the voice coil in response to a drive signal to vibrate the vibration member; a supporting unit disposed on a portion other than the soundboard in the keyboard instrument and configured to support the main body; a performance information generation unit adapted to generate performance information corresponding to an operation of the key; and a signal generation unit adapted to generate an audio waveform signal based on the performance information, the generated audio waveform signal being supplied to the voice coil as the drive signal to thereby vibrate the vibration member, wherein the length of the voice coil along a vibration direction of the vibration member is equal to or smaller than a sum of a length of the magnetic path space along the vibration direction and a double of a maximum deflection amount of the vibration member.