Distance Attenuation Calc 1.2

The Distance Attenuation Calculator serves as a valuable tool for those seeking to determine the decrease in sound level measured in decibels (dB) as a function of distance from a sound source. This application excels in providing precise and timely calculations, making it a reliable resource for students, professionals, and enthusiasts in the fields of physics and acoustics.

Key Features:

• Instantaneous calculation capabilities
• Results can be easily copied for use in other applications
• Includes relevant formulas for user reference
• Accommodates precision up to 16 decimal places
• Supports multiple units for diverse input parameters

Distance attenuation is fundamentally the reduction of sound level in dB as an observer moves further away from a sound source. As sound propagates, it radiates outward, causing the energy to be distributed over an increasing area, much like ripples spreading across water. Consequently, this dispersal leads to a decrease in sound intensity as the distance from the source increases.

The formula governing sound attenuation is outlined as follows:

SPL₂ = SPL₁ - 20 * log (D₂ / D₁)

Where:

• SPL₁ - Sound Pressure Level [dB] at point 1
• SPL₂ - Sound Pressure Level [dB] at point 2
• D₁ - Distance from the sound source to point 1
• D₂ - Distance from the sound source to point 2