This paper describes the design of the ditch-type noisesilence trough.
本文介绍了地沟式消声坑槽的设计。
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They were randomly divided into four groups and exposed to various noise levels in the background, from total silence to 50 decibels, 70 decibels, and 85 decibels.
Since the effects were small, this may suggest that our creative thinking does not differ that much in response to total silence and 85 decibels of background noise.