NS EN ISO 11821 Ed. 1 标准详情
- 标准号:NS EN ISO 11821 Ed. 1
- 中文标题:声学 - 测量的原位声衰减的可移动屏幕
- 英文标题:Acoustics - Measurement Of The In Situ Sound Attenuation Of A Removable Screen
- 标准类别:挪威标准NS
- 发布日期:
Defines methods for evaluation of the in situ sound attenuation performance of a removable screen, in- or out-of-doors. Based on an insertion loss measurement for carrying out either with shielding of the actual sound source(s) or by means of an arti
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