구조기인 소음의 영향분석

By structure-borne effect of small reverberation room, Based on various experimental data, it is showed that structure-borne effect plays an important role of the small chamber performance under the frequency range of 400 Hz. When the structure-borne effect is removed, the accuracy to follow the mass law behavior has been expanded down to 200 Hz frequency range. We also examined the correction factor using the SEA simulation in addition to mass law. It turns out that SEA simulation is also appropriate for estimating the transmission loss of the test specimen. We may conclude that if the structure-borne effect is removed, it would be able to measure the transmission loss characteristics using a small chamber with validation down to 200 Hz frequency range.