This Flashcard deck gives a brief description of sound pressure and intensity
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Sound pressure is the pressure caused by a sound wave
The SI unit for sound pressure is pascal, with the symbol Pa
Another important measurement is the sound pressure level
Sound pressure level is measured in decibels and have the symbol dB
This standard reference level in air is 20 µPa
To measure the total sound pressure, you have to take the atmospheric pressure into account too
The sound pressure level can be measured using the equation
\(L_p\)= 20 log10\(\frac{prms}{pref}\)
The decibel level ranges from 0-225 dB
