Temporary threshold shift - is my example correct?

[alinta]

Hi there,

When it sounds like I am hearing the world from underwater for a few hours/few days after a very loud music concert, is that what is called temporary threshold shift?

Or is TTS something that occurs only during the exposure to high dB? (Eg. at the loud concert itself).

Thank you for any help. :)
Alinta

 

[Evo]

Here is information on TTS, not sure if it answers your question.

On exposure to NOISE, the ear's sensitivity level will decrease as a measure of protection. This process is referred to as a shift in the THRESHOLD OF HEARING, meaning that only sounds louder than a certain level will be heard. The shift may be temporary, chronic or permanent.

Susceptibility to TS varies greatly from person to person, men generally being more sensitive to low frequency sounds, and women more susceptible to high frequencies. Sounds in the 2 - 6 kHz range seem to induce greater temporary threshold shift (TTS) than other frequencies. Also called aural fatigue. Compare: ADAPTATION.

One of the body's reactions to loud sounds is a constriction of the blood vessels (vasoconstriction) which reduces the blood supply reaching the hair cells of the ORGAN OF CORTI. The outer rows of hair cells respond mainly to low intensity sound levels and thus are easily saturated by loud sounds, particularly when their source of blood is diminished. This leaves only the inner rows of hair cells working since they need a higher intensity for stimulation.

Thus, TTS implies a temporary HEARING LOSS for low level sounds (somewhat analogously to the protective closing of the iris in bright light and the resulting temporary desensitization to low light levels). If the outer hair cells are not allowed to recover through periods of quiet, they gradually lose their ability to respond and eventually die.

http://www.sfu.ca/sonic-studio/handbook/Threshold_Shift.html