Degrees of hearing loss – Audition Masséna

Degrees of hearing loss and their symptoms

Degree of loss	Decibel level	Symptoms
Normal hearing	Between 0 and -20 dB	Pas de difficulté en particulier
Light loss	Between -21 dB and -40 dB	Difficulty hearing soft voices or following a conversation in noisy environments
Average loss	Between -41 dB and -70 dB	Normal voices become difficult to understand. Need to increase the volume of the television, frequent misunderstandings
Severe loss	Between -71 dB and -90 dB	Only loud voices and powerful sounds are perceived Verbal communication is very difficult without a hearing aid. Lip reading is often necessary
Deep loss	Between -91 dB and -120 dB	Only certain loud noises are heard, unable to communicate without hearing correction
Cophosis	-120 dB and more	No sound is heard