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HOME / ̷ / ̷ |
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̶ ʴ Ҹ, Ҹ, ٶ Ҹ Ī̴. ַ ɸ, ο Ͽ |
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¿Ǵ Ư¡ ִ. |
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ǥ dB ǥϸ ûļ 20Hz ~ 20KHz̸ ǰ û |
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20dB ~ 130dB̴. Ư û¿ ļ 3,000Hz ~ 4,000Hz Ҹ̴. |
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Ҹ ε ݻǸ鼭 پ Ѵ.
Ҹ ļ, Ի簢, β, ġ Ȳ ٸ 縦
Ͽ dz ȿ ϰų, ϽŰ ̿Ѵ. |
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ܺο ϴ ȴ.
dB m Ŭ, ļ f ũ dB = 20 log m + 20 log f - 23 ǥõȴ.
β 2 β ϸ 6dB ϰԵȴ. |
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ȸȭ ûظ Ͽ Ÿ м ġ NOISE CRITERIA (NC) Ѵ. |
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NC ȯ |
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NC 20~30 |
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ſ |
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NC 30~35 |
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, ȸȭŸ 10MŸ |
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NC 35~40 |
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ȸȭŸ 4M, ȭϴµ |
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NC 40~50 |
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ȭŸ 2M, ūҸ 4M ȭ |
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NC 50~55 |
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ūҸ ȭ 2M, ȭ ,ȸǿ |
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NC 55 ̻ |
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ſ ò,ȭ |
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Ҹ |
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Ҹ |
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Ҹ |
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200dB |
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Ҹ |
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130dB |
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ƮҸ (30M) |
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120dB |
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ִ Ѱ |
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100dB |
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̿ Ҹ, ڵ |
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80dB |
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, ȥ Ÿ |
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50dB |
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繫, ȭ |
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30dB |
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Ÿ |
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10dB |
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Ҹ |
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0dB |
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ִ Ѱ |
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ú : DECIBEL (dB) |
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Ҹ |
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ս : IMPACT INSULATION CLASS (IC) |
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ٴ̳ õ翡 ս |
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: NOISE REDUCTION COEFFICIENT |
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Ư ļ Ǿ Ÿ |
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0~1.00 ַ ǥϸ 0 ϴ , 1.00 ϴ
1.00 ٴ ǹ |
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巹 : SOUND LEVEL |
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ļ Ҹ ũ⸦ ϴ A,B,CƯ |
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: SOUND LEVEL METER |
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ϴ ̴. ũ,,ǥñ ļ зԾ (PROTOCOL) |
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: SOUND PRESSURE LEVEL |
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Ҹ ũ, ϴ dB Ÿ |
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ս : SOUND TRANSMISSION CLASS (STC) |
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ᳪ Ǵ Ư Ÿ з̸ 繫ǿ Ƽǿ ַ |
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ս : TRANSMISSION LOSS (TL) |
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ᳪ dB ҵǾ° ϴ ϴ |
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Ʈ : SPECTRUM |
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ļ Ÿ Ҹ Ư |
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: SOUND ABSORPTION COEFFICIENT |
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Ҹ Ǿ Ǵ Ȥ ǥ鿡 ݻ簡 Ǵ |
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Ÿ : OCTAVE BAND |
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зϱ 鸮 Ҹ ļ 뿪 |
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