Effect of change in impact force on heavy-weight impact sound and impact characteristic of heavy/soft impact sources

• Autores: Atsuo Hiramitsu
• Localización: Noise Control Engineering Journal, ISSN 0736-2501, Vol. 59, Nº. 5, 2011, págs. 497-504
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • JIS A 1418-2 standardized two heavy/soft impact sources, �car-tire source� and �rubber ball source�, for measurement of the heavy-weight floor impact sound. The rubber ball source is defined in ISO 140-11. The impact force and frequency characteristic differ between the car-tire source and the rubber ball source. Therefore, the effect of change in impact force due to heavy-weight impact sound was investigated in two types of construction. Moreover, the changes in impact characteristic of two heavy/soft impact sources by changing the drop height were measured. It is indicated that there is linearity in the drop height of two heavy/soft impact sources and the impact force exposure level. However, the correspondence between the impact exposure level and the heavy-weight floor impact sound pressure level using the car-tire source is low for the wood-frame construction.