Acoustic Power Calculator

Calculate the sound power level in decibels: Lw = 10 * log10(W / W0), where W0 = 1e-12 W is the reference power.

W

Sound Power Level

100.00 dB

Intensity at 1 m (free field)0.00079577 W/m2

Sound Power Level vs Sound Power

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सूत्र

## Sound Power Level Sound power is the total acoustic energy emitted by a source per second, independent of distance or room. ### Formula **Lw = 10 log10(W / W0)** - *W* = sound power (watts) - *W0* = 10^-12 W (reference) Sound power is an intrinsic property of the source. Intensity at distance r in free field: I = W / (4 pi r^2).

हल किया गया उदाहरण

A loudspeaker emitting 0.01 W.

  1. 01Lw = 10 log10(0.01 / 1e-12)
  2. 02Lw = 10 log10(1e10)
  3. 03Lw = 10 * 10 = 100 dB
  4. 04Intensity at 1 m = 0.01 / (4 pi) = 7.96e-4 W/m2