Effects of noise on hearing
Temporary and permanent hearing loss
First warning related to a repeated exposure to an intense noise, ear fatigue is characterised by a temporary hearing loss. Your ears are ringing, you have to make people repeat certain words... This must be taken seriously.
Hyperacusis
Hyperacusis is characterised by perceiving sounds much louder than they actually are. Severe hyperacusis makes the noises of daily life unbearable. It can result from an acute acoustic trauma.
Tinnitus
According to the definition of the France Acouphènes association, chronic tinnitus is a subjective noise, heard constantly, by day and night, in the ear or the head, without any outside sound stimulus. Usually, it happens after an acoustic trauma.