| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverse square characteristic analyzer capable of estimating an appropriate attenuation curve from measured sound pressure values, and to provide an inverse square characteristic analyzer capable of performing estimation of the attenuation curve with a small amount of operation, and stably obtaining an appropriate estimation result. <P>SOLUTION: An inverse square characteristic analyzer 11 includes: attenuation curve estimation means 12 for estimating an attenuation curve obtained by approximating relation between sound pressure and positions in inverse proportion by using measured values of the sound pressure at a plurality of positions in a test sound field and positions of the respective measurement points as input data; difference calculation means 13 for calculating difference between the estimated attenuation curve and the measurement values of the sound pressure in a standard of a sound pressure level; and characteristic evaluation means 14 for evaluating characteristics of the test sound field based on the calculated difference. The attenuation curve estimation means 12 further estimates the attenuation curve so as to minimize the difference between the measurement values of the sound pressure and the attenuation curve in the standard of the sound pressure level. <P>COPYRIGHT: (C)2013,JPO&INPIT |
