Sound level in decibels¶

The sound level of a sound wave is a physical quantity that is used to describe the wave’s intensity.

Links:

Wikipedia, similar formula.

sound_level¶

sound_intensity_level of the sound wave.

Symbol:: L_I
Latex:: \(L_{I}\)
Dimension:: dimensionless

intensity¶

intensity of the sound wave.

Symbol:: I
Latex:: \(I\)
Dimension:: power/area

reference_sound_level¶

The sound level when the wave’s intensity equals the reference intensity.

Symbol:: L_I0
Latex:: \(L_{I0}\)
Dimension:: dimensionless

reference_intensity¶

The intensity of a sound wave relative to which the sound level is measured.

Symbol:: I_0
Latex:: \(I_0\)
Dimension:: power/length**2

definition¶

L_I = L_I0 * log(I / I_0, 10)

Latex:: \[L_{I} = L_{I0} \log_{10} \left( \frac{I}{I_0} \right)\]