hearing impairment or hearing loss is a full or partial decrease
in the ability to detect or understand sounds.
- Caused by a wide range of biological and environmental factors, loss of hearing
can happen to any organism that perceives sound.
vary in amplitude and in frequency.
is the sound wave's peak
is the number of cycles per second of a
component of a sound wave. Loss of the ability to detect some frequencies, or to
detect low-amplitude sounds, that an organism naturally detects, is a hearing