Bepul muhandislik vositasi #214
Shovqin darajasini qo'shish kalkulyatori
Logarifmik dB qo'shish yordamida 8 tagacha shovqin manbaini birlashtiring. Har bir manba darajasini dB yoki dBA da kiriting.
L = 10·log₁₀(Σ10^(Li/10))8 tagacha manbadB / dBA
Results
Umumiy shovqin darajasi
—
Manbalar soni
—
Eng baland manbaadan oshish
—
Shovqin manbalari diagrammasi
Logarifmik dB qo'shish
- Ikkita teng manbani qo'shish darajani oshiradi 3 dB
- Agar farq >10 dB bo'lsa, tinchroq manba <0.4 dB ga hissa qo'shadi
- 10 ta teng manbani qo'shish darajani oshiradi 10 dB
Misol — 85 + 82 + 78 dB
L = 10×log10(10^8.5 + 10^8.2 + 10^7.8) = 10×log10(3.16×10⁸ + 1.58×10⁸ + 0.63×10⁸)
= 10×log10(5.37×10⁸) = 87.3 dB
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