Sound pressure measurement in decibels. In decibels, 20 times the logarithm of the ratio of the pressure of a sound to the reference pressure, which must be explicitly stated. Also, the pressure of an acoustic wave stated in terms of dynes per square centimeter or microbars.
Improve our Dictionary of Audio Terms: Send new term definitions proposals to addtopic71@lp2cd.com
Sound pressure level (SPL) --
Sound pressure measurement in decibels. In decibels, 20 times the logarithm of the ratio of the pressure of a sound to the reference pressure, which must be explicitly stated. Also, the pressure of an acoustic wave stated in terms of dynes per square centimeter or microbars.