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| Sound measurements |
|---|
| Sound pressure p |
| Particle velocity v |
| Particle velocity level (SVL) |
| (Sound velocity level) |
| Particle displacement ξ |
| Sound intensity I |
| Sound intensity level (SIL) |
| Sound power Pac |
| Sound power level (SWL) |
| Sound energy density E |
| Sound energy flux q |
| Surface S |
| Acoustic impedance Z |
| Speed of sound c
|
Sound intensity level or acoustic intensity level is a logarithmic measure of the sound intensity in comparison to the reference level of 0 dB (decibels).
The measure of a ratio of two sound intensities is
where J1 and J0 are the intensities.
The sound intensity level is given the letter "LJ" and is measured in "dB". dB is dimensionless.
If J0 is the standard reference sound intensity, where
(W = watt), then instead of "dB" we use "dB SIL". (SIL = sound intensity level).
External links
- Conversion: Sound intensity level to sound intensity and vice versa
- Ohm's law as acoustic equivalent - calculations
- Relationships of acoustic quantities associated with a plane progressive acoustic sound wave - pdf
- Table of Sound Levels - Corresponding Sound Intensity and Sound Pressure
Wikipedia content modification information:
- This page was last modified on 8 October 2008, at 02:06.
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