等級(jí)
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計(jì)權(quán)隔聲量Rw,dB
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Ⅰ
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Rw≥45
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Ⅱ
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45>Rw≥40
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Ⅲ
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40>Rw≥35
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Ⅳ
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35>Rw≥30
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Ⅴ
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30>Rw≥25
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1/3倍頻帶規(guī)范化聲壓級(jí)差,dB
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計(jì)權(quán)隔聲量,dB
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|||||||
100
|
125
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160
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200
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250
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315
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400
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500
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|
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630
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800
|
1000
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1250
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1600
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2000
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2500
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3150
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環(huán)境溫度
℃
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