三味線の振動エネルギー伝搬解析

抄録

Experimental statistical energy analysis is applied to analyze the vibration energy flow shamisen body. The analysis clarified it the power flow through the subsystems and the power input into each subsystem during the impact excitation at the bridge and strings. 1）vibrational energy easy to propagation high rigidity subsystem to high rigidity subsystem. And conformance with analysis consideration. 2) Correlation was found in input powers and the reverberation times. The reverberation time becomes longer at the frequencies with the large input powers. 3) Correlation was also found in power flows and the reverberation times. It is shown that the exchanges of the energy between skin subsystems bring the larger reverberation.