
6
NOISE CRITERIA CURVES
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| NOTCH | SPL(dB(A)) | LINE | |
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| COOL(220V) | 45 |
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| COOL(240V) | 47 |
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| HEAT(220V) | 46 |
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| HEAT(240V) | 48 |
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| Test conditions. |
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| Cooling :DB35: WB24: | ||||
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| Heating :DB 7: | WB 6: | |
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BAR | 80 |
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MICRO |
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0dB = 0.0002 | 70 |
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60 |
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LEVEL, |
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PRESSURE | 50 |
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SOUND | 40 |
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BAND | 30 |
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OCTAVE |
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| 20 | APPROXIMATE |
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| TERESHOLD OF |
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| HEARING FOR |
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| CONTINUOUS |
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| NOISE |
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| 10 | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
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BAND CENTER FREQUENCIES, Hz
9