| 摘要 |
PROBLEM TO BE SOLVED: To provide a wolf tone eliminator capable of eliminating a wolf tone which is generated by a musical instrument including a resonant body. SOLUTION: The wolf tone eliminator 100 has the resonant body and generates sound of specified frequency, and it is provided in an acoustic device which generates at least one wolf tone. The wolf tone eliminator includes a piezoelectric material 102, at least one electrode 104 and a specified circuit. The piezoelectric material makes deformation of the acoustic device into electric power. The electrode is used for transferring the electric power. The specified circuit includes at least one electrode 104, a resister 106 and an inductance 108, and the electric power transferred from the piezoelectric material is consumed. When the acoustic device generates the wolf tone, the specified circuit consumes electric resonance generated in the acoustic device and the specified circuit, and the wolf tone is eliminated. COPYRIGHT: (C)2011,JPO&INPIT
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