Description: Sound pressure level is actually a ratio of the absolute Sound Pressure and a reference level (usually the Threshold of Hearing or the lowest intensity sound that can be heard by most people).; Name: acoustic pressure level
Description: Ten times the logarithm to the base 10 of the ratio of the square of the sound pressure, p, to the square of a reference value, p0, expressed in decibels; Name: Sound pressure level
Description: group of construction elements with the same construction features and the same construction for the transportation of media which are combined due to similar production techniques for the construction admittance examination and quality conformity controls; Name: Construction type conveying element