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5. SLUŠNA AKUSTIKA - Fer

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promjena glasnoće<br />

osnovna glasnoća - -<br />

jedva glasnije +1 dB<br />

čujno glasnije +3 dB<br />

dvostruko glasnije +10 dB<br />

4 × glasnije +20 dB<br />

broj izvora<br />

promjena zv. tlaka<br />

Ukupna razina glasnoće izračunava se prema izrazu:<br />

L = L1 + ΔL<br />

odnosno prema sl.:<br />

Dijagram za određivanje<br />

indeksa glasnoće na osnovi<br />

oktavne razine zv. tlaka.<br />

×1<br />

×1,1<br />

×1,4<br />

×3<br />

×10<br />

15

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