101 弾性板と吸音材を組合せた場合の音響特性の検討(騒音・振動の解析・改善)

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タイトル別名
  • 101 Acoustic Characteristics of Absorbing Materials with Elastic Plate
  • 弾性板と吸音材を組合せた場合の音響特性の検討
  • ダンセイバン ト キュウオンザイ オ クミ アワセタ バアイ ノ オンキョウ トクセイ ノ ケントウ

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説明

The structures of absorptive materials with elastic plates are used in sound absorbing louver. The paper describes calculated results and experimental results of transmission loss when sound waves propagate parallel to the sound absorbing materials with elastic plates. We examined the acoustic characteristics of sound absorptive materials combined with elastic plates. The calculated results based on the equivalent circuit and the experimental results for the case of only the sound absorptive material showed the same tendency. The experimental results for the case of the sound absorptive material with a plate having a large stiffness also showed the same tendency as the calculated results.

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