Characteristic Symbols Particle velocity v, SVL Sound intensity I, SIL | Sound pressure p, SPL Particle displacement δ Sound power P, SWL | |
Transmission loss (TL) in general describes the accumulated decrease in intensity of a waveform energy as a wave propagates outwards from a source, or as it propagates through a certain area or through a certain type of structure.
Contents
It is a terminology frequently used in optics and acoustics. Measures of TL are very important in the industry of acoustic devices such as mufflers and sonars.
Measurement
Measurement of transmission loss can be in terms of decibels.
Mathematically, transmission loss is measured in dB scale and in general it can be defined using the following formula:
where:
Transmission loss may refer to a more specific concept in one of the field below.
Duct Acoustics
Room Acoustics
Underwater Acoustics
References
Transmission loss Wikipedia(Text) CC BY-SA