大気環境・騒音振動 (1)

[VII-05] Acoustic performance measurement of the noise barrier

*Shogo Otake¹, Hironori Nagaoka¹, Keigo Hisadomi¹, Syunya Bandoh¹, Takashi Okura², Hiroshi Itohata², Tatsuaki Mori², Kazuyoshi Ishikawa³ (1. Oriental Consultants, 2. Nippon Expressway Research Institute, 3. K-Technical Experts)

Keywords:noise barrier, acoustic performance , noise absorption rate, noise transmission loss, measurement, existing products