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Fish sex so loud it could deafen dolphins

A species of Mexican fish amasses in reproductive orgies so loud they can deafen other sea animals, awed scientists said Wednesday, calling for preservation of the "spectacle" threatened by overfishing.

Older Neandertal survived with a little help from his friends

An older Neandertal from about 50,000 years ago, who had suffered multiple injuries and other degenerations, became deaf and must have relied on the help of others to avoid prey and survive well into his 40s, indicates a ...

Insects inspire next generation of hearing aids

An insect-inspired microphone that can tackle the problem of locating sounds and eliminate background noise is set to revolutionize modern-day hearing aid systems.

High-tech items giving deaf-blind online access

Tanisha Verdejo loves to surf the Internet for online shopping deals. She chats on Facebook, learns about new recipes and enjoys sending emails to friends and family.

Researchers seek to reduce ear-splitting jet engine noise

Have you ever had a fighter jet fly over your home and the noise of the aircraft booms loud enough to rattle the windows? Well, imagine working on an aircraft carrier or air base, up close to the engines as they take off ...

Lip-reading technology promises to make hearing aids more human

Hearing aids can be lifelines for people with hearing loss. But their limitations can mean that, in particularly noisy environments, users cannot exploit the best of the existing technology. Most new hearing aid designs just ...

Surviving dance club music (noise) with hearing intact

By tweaking a system in the ear that limits how much sound is heard, a global team of researchers has discovered one alteration that shows that the ability of the ear to turn itself down contributes to protecting against ...

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Hearing impairment

A hearing impairment or deafness 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. "Hearing impaired" is often used to refer to those who are deaf, although the term is viewed negatively by members of Deaf culture, who prefer the terms "Deaf" and "Hard of Hearing".

Sound waves vary in amplitude and in frequency. Amplitude is the sound wave's peak pressure variation. Frequency is the number of cycles per second of a sinusoidal 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 impairment.

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