Analysis the Relation between Material Structure and Auditory Impression

At present, audio insulators are statically evaluated using a sine wave, whereas they need to be dynamically evaluated using musical sound. In this study, we present a dynamic evaluation method using musical sound. Furthermore, we constructed insulators with layers of aluminum waste material and various materials. And we examined various characteristics of the insulators in addition to their damping characteristics. In the results, we were able to confirm the damping characteristics of insulators using their integrals of the power spectrum for peaks at 200 to 300[Hz] and 350 to 450[Hz]. Moreover, we confirmed that envelope curve for the impulse response of insulators have various characteristics and conveyed a sound impression.