| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator for a woodwind instrument performance and a woodwind instrument player, by which timbre very close to that by a human performance can be obtained. SOLUTION: When compressed air is blown in an artificial mouth 19, a reed 17 self-vibrates with a compressed air flow and then goes into behavior that is almost in a playing state of a real woodwind instrument. At the same time, a piezoelectric vibrator 23, stuck on the reed 17 vibrates corresponding to an excitation signal, but the piezoelectric vibrator 23 is compact and lightweight and has weak mechanical characteristics, so that self-vibrations of the reed 17 are disturbed less. Furthermore, the piezoelectric vibrator 23 is easily influenced by a tube resonance frequency of a wind instrument, so vibrations of non-resonance frequency are attenuated with sound waves reflected by the tube, but vibrations of resonance frequency are amplified by the tube. Thus, vibrations corresponding to resonance of the tube are obtained, and then the reed 17 behaves almost in the playing state of the real wind instrument whose reed 17 self-oscillates, despite its being driven by an electrical signal. COPYRIGHT: (C)2007,JPO&INPIT
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