Kostenloser Schall Intensity Level Rechner
Berechnen Sie sound intensity level in decibels. Kostenloser acoustics Rechner.
Sound Intensity Level
90.00 dB
Formel
Sound Intensity Level
The decibel scale expresses sound intensity relative to the threshold of human hearing.
Formula
L = 10 log10(I / I0)
Every 10 dB increase corresponds to a tenfold increase in intensity. Normal conversation is about 60 dB; a rock concert about 110 dB.
Lösungsbeispiel
Sound intensity of 0.001 W/m2.
- 01L = 10 log10(I / I0)
- 02L = 10 log10(0.001 / 1e-12)
- 03L = 10 log10(1e9)
- 04L = 10 * 9 = 90 dB
Häufig Gestellte Fragen
Why use a logarithmic scale?
Human hearing spans an enormous range of intensities (a factor of about 10^12). The logarithmic decibel scale compresses this into a manageable range of about 0 to 120 dB.
What is the threshold of pain?
About 120 to 130 dB, corresponding to 1 to 10 W/m2. Prolonged exposure above 85 dB can cause hearing damage.
How does distance affect intensity level?
For a point source, intensity decreases as 1/r^2. Doubling the distance reduces the level by about 6 dB.
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