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Zvucna izolacija / koristio sam search
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23-09-2008, 03:37 PM
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NLP
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Re: Zvucna izolacija / koristio sam search
Super post ali nemoj zamjeriti o tom se je detaljno več pričalo osim mo?da te formule:
"Evo vam i jedna Formula
R=20*log(f*m)-45,4 dB
R=zvucna izolacija u dB f = Frekvencija m= Masa (tezina)zida u kg/m? "
Ali nema veze, bolje 5 puta nego nijedanput
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