Temporary or permanent loss of hearing due to exposure to sound
Auditory fatigue is defined as a temporary loss of hearing after exposure to sound. This results in a temporary shift of the auditory threshold known as a temporary threshold shift (TTS). The damage can become permanent (permanent threshold shift, PTS) if sufficient recovery time is not allowed before continued sound exposure.[1] When the hearing loss is rooted from a traumatic occurrence, it may be classified as noise-induced hearing loss, or NIHL.
There are two main types of auditory fatigue, short-term and long-term.[2] These are distinguished from each other by several characteristics listed individually below.
Short-term fatigue
full recovery from TTS can be achieved in approximately two minutes
the TTS is relatively independent of exposure duration[2][3]
TTS is maximal at the exposure frequency of the sound
Long-term fatigue
recovery requires a minimum of several minutes but can take up to several days
dependent on exposure duration and noise level[2][3]
^Barbara A. Bohne; Gary W. Harding (June 14, 1999). "Noise & Its Effects on the Ear". Noise-induced Hearing Loss. Dept. of Otolaryngology, Washington University School of Medicine, St. Louis, MO. Archived from the original on 2016-07-01. Retrieved July 5, 2016. Parameters of Noise Which Affect Its Damage Potential
^ abcCharron, Sylvie; Botte, Marie-Claire (1988). "Frequency selectivity in loudness adaptation and auditory fatigue". The Journal of the Acoustical Society of America. 83 (1). Acoustical Society of America (ASA): 178–187. Bibcode:1988ASAJ...83..178C. doi:10.1121/1.396443. ISSN 0001-4966. PMID 3343438.
^ abHirsh, I. J.; Bilger, R. C.; Burns, W. (1955). "Auditory-Threshold Recovery after Exposures to Pure Tones". The Journal of the Acoustical Society of America. 27 (5). Acoustical Society of America (ASA): 1013. Bibcode:1955ASAJ...27Q1013H. doi:10.1121/1.1918032. ISSN 0001-4966.
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