![The inverse square law 1/r² and the sound intensity - sound energy quantity not for sound pressure as sound field quantity - acoustic audio sound reduction free field particle amplitude volume loudness The inverse square law 1/r² and the sound intensity - sound energy quantity not for sound pressure as sound field quantity - acoustic audio sound reduction free field particle amplitude volume loudness](http://www.sengpielaudio.com/Blauert-pressure-velocity-intensity.gif)
The inverse square law 1/r² and the sound intensity - sound energy quantity not for sound pressure as sound field quantity - acoustic audio sound reduction free field particle amplitude volume loudness
![SPL sound level to dB pressure level sound pressure sound intensity unit dB Conversion of sound pressure to sound intensity sound units levels calculating spl sound level calculation air sound units level SPL sound level to dB pressure level sound pressure sound intensity unit dB Conversion of sound pressure to sound intensity sound units levels calculating spl sound level calculation air sound units level](http://www.sengpielaudio.com/SoundLevelFormulaA.gif)
SPL sound level to dB pressure level sound pressure sound intensity unit dB Conversion of sound pressure to sound intensity sound units levels calculating spl sound level calculation air sound units level
If a speaker of power P is attached to a wall and is made to produce sound, will the intensity of the sound at a distance r be I=P/2πr^2 since it is
![PreCalculus - Logarithmic & Exponential Functions (19 of 20) Calculating Decibels (Sound Intensity) - YouTube PreCalculus - Logarithmic & Exponential Functions (19 of 20) Calculating Decibels (Sound Intensity) - YouTube](https://i.ytimg.com/vi/SYu5YIYLDPE/hqdefault.jpg)