Keyboard instrument
AssigneeYamaha Corporation
InventorsKenta OHNISHI, Rokurouta MANTANI
Life of this patent
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Abstract
In a predetermined sound generation mode, a drive signal having a frequency characteristic corresponding to an operated key is supplied to excitation units provided on a soundboard. The soundboard is vibrated in response to a mechanical vibration generated by the excitation units to generate an acoustic sound by the vibration of the soundboard. The frequency characteristics of the drive signal to be supplied to each of the excitation units is set in association with the vibration characteristics of the soundboard at a position of a vibration member of each excitation unit connected to the soundboard. For example, the frequency characteristics of the drive signal is set to characteristics capable of suppressing resonance of the soundboard.
Claims8
A keyboard instrument comprising:
- a plurality of keys;
- a plurality of sounding bodies each provided in corresponding relation to each of the plurality of keys;
- a plurality of hammers each responsive to an operation of any one of the keys and adapted to strike the sounding body corresponding to the operated key;
- a soundboard configured to be vibrated with vibration of the sounding body;
- an excitation unit comprising a vibration member connected to a given position on the soundboard and adapted to vibrate the soundboard via the vibration member in response to a drive signal supplied thereto;
- 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 excitation unit as the drive signal to vibrate the vibration member,
- wherein the signal generation unit generates the audio waveform signal having frequency characteristics which are adjusted in association with vibration characteristics of the soundboard at the given position where the vibration member is connected to.
Dependencies are inferred from the claim text.