Hearing Loss
Hearing Loss not only involves amplification of sound by also how a person perceives sound.
Hence there is the ability to hear and the ability to process that sound into meaningful instructions.
Hearing Frequencies
The human ear does not hear all sounds produced - it hears certain frequencies measured in hertz, (Hz) or cycles per second.
The general range of hearing for young people is 20 Hz to 20kHz.
View a video of Understanding an Audiogram
Video supplied by www.HearingAidsAustralia.com specialising in Hearing Aids