Automatic Volume Limiter
(AVL) is an automatic volume limiter. AVL technology can be electronic circuitry or software. Automatic volume limiting is used in audio equipment such as tape recorders, MP3 players, CD players, and also in television sets, and limits the maximum volume to a level
set by the manufacturer or adjustable bythe user
, thereby protecting hearing from damage. In audio equipment, the technique is most often used when using headphones, so that the volume level does not cause damage or disturb secondary parties.
In television, the AVL function can also be used to adjust the excessive level of commercials to the other level.