Microphone
Mild to profound

Microphone
The microphone leads the sounds into the amplifier to be processed. It changes acoustical energy into electrical energy, which is then processed within the hearing aid.

Mild to profound
Generally, the degree of hearing loss is described using one of five categories:

• Mild (average from 25-40 dB HL)
• Moderate (average from 40-55 dB HL)
• Moderate/Severe (average from 55-70 dB HL)
• Severe (average from 70-90 HL)
• Profound (average greater than 90 dB HL)

The hearing loss is defined based on what a hearing impaired person can and cannot hear.
You can refer to the following audiogram where A = Hearing level in decibels (dB) and B = Frequency in hertz (Hz)