Isotropic noise field, being of importance to many microphone arrays simulation and adaptive noise cancellation systems, is a famous characteristic in room acoustic environment.

等方向性噪声是室内声学环境中的一个显著特征，对于很多麦克风阵列和自适应消噪系统而言，具有重要意义。

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The noise pollution is paid more and more attention. How prevent and control the noise pollution to get the proper acoustic environment having become the hotspot.

噪声污染越来越被人们所重视，如何控制噪声污染和营造一个适宜的声学环境，已成为人们十分关注的问题。

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The acoustic material is an effective measure which could reduce noise and improve acoustic environment.

声学材料是降低噪声，改善声环境的有效措施。

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In April, Plevin agreed to erect an acoustic barrier after consultation with Tameside Council and the Environment Agency, following complaints of excessive noise at the plant.

BBC: Wood dust protesters march from Mossley to Plevin plant