Distance Attenuation Calc

Distance Attenuation Calculator are physic/math calculator to find sound level in dB decreases with distance from the sound source fast and easy.

Features:

- Instant calculation

- Result are copy able to other app

- Formula are include as reference

- Support up to 16 decimal place

- Support various unit for each input

Distance attenuation is defined as the way in which a sound level [dB] reduces as a listener moves away from a sound source.
As sound travels from the source, the area over which the sound is spread increases like ripples on a pond.
This means that the same amount of acoustic energy is dispersed over a greater area, and as a result the sound level at any position on this area reduces as the distance from the source is increased.

Sound attenuation describes how the SPL [dB] changes with increasing distance from the sound source.

The sound attenuation formula is as follows:

SPL = SPL - 20 * log (D / D)

where:

SPL - Sound Pressure Level [dB] at point 1

SPL - Sound Pressure Level [dB] at point 2

D - Distance from the sound source to point 1

D - Distance from the sound source to point 2

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