抄録
This report deals with an experimental method for estimating sound pressure level from the acoustical enclosures. By using a vibro-acoustic reciprocity technique, we measured the acoustic transfer function for sound radiation from the opening and the vibrating components. And we measured volume velocity of each component as the sound source. Especially in case of the opening, we calculated the volume velocity by using the measured pressure level and theoretical radiation impedance. Eventually, sound pressure level from the acoustical enclosures are estimated by using the measured acoustic transfer functions and the volume velocity of each components. The comparisons were made between predicting results using the reciprocal technique and directly measuring results. Agreement is fairly good and it suggests that this method can be used to evaluate the sound pressure level from the acoustical enclosures.
