Sound Intensity Level Calculator

Calculate the sound intensity level in decibels: L = 10 * log10(I / I0), where I0 = 1e-12 W/m2 is the threshold of hearing.

W/m2

Sound Intensity Level

90.00 dB

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Formule

## Sound Intensity Level The decibel scale expresses sound intensity relative to the threshold of human hearing. ### Formula **L = 10 log10(I / I0)** - *I* = sound intensity (W/m2) - *I0* = 10^-12 W/m2 (reference threshold) Every 10 dB increase corresponds to a tenfold increase in intensity. Normal conversation is about 60 dB; a rock concert about 110 dB.

Exemple Résolu

Sound intensity of 0.001 W/m2.

  1. 01L = 10 log10(I / I0)
  2. 02L = 10 log10(0.001 / 1e-12)
  3. 03L = 10 log10(1e9)
  4. 04L = 10 * 9 = 90 dB