hearing threshold.A shift in the hearing threshold is considered hearing damage or hearing loss and is due to exposure of the hearing to high volume
. Hearingis damaged by high sound pressure levels
, such as those found primarily in discotheques. In addition to Permanent Threshold Shift, there is also Temporary Threshold Shift. Temporary Threshold Shift (TTS), in contrast to Permanent Threshold Shift, is reversible and therefore does not lead to permanent damage.