To protect the ears, audiologists suggest using the 80/90 rule: Listen at no higher than 80% of the maximum volume for 90 ...

Hearing levels are determined by decibels, which measure the intensity or loudness of sounds a person can hear. For humans to ...

Because of high-powered headphones and high-decibel sound systems, hearing loss is no longer a simple sign of aging.

Long lectures may require a change-over of BSL interpreter or electronic notetaker mid-way. Poor sound quality can be extremely fatiguing for any listener, due to the level of concentration required.