| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound absorbing capability measurement method capable of easily finding sound absorbing ability inside a room. SOLUTION: An input voltage entered to a sound source device is measured, a power level of a sound source is found from the input voltage and a rated sensitivity level of a speaker, and the sound absorbing capability is found from an indoor sound pressure level measured by a sound reception device and the sound source power level. COPYRIGHT: (C)2006,JPO&NCIPI
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