Hearing impairment
| Hearing impairment | |
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| The International Symbol for Deafness | |
| ICD-10 | H90-H91 |
| ICD-9 | 389 |
| DiseasesDB | 19942 |
| MeSH | D034381 |
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Hearing impairment Microchapters |
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Hearing impairment On the Web |
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American Roentgen Ray Society Images of Hearing impairment |
Synonyms and keywords: Hearing loss
Resources
Many different assistive technologies, such as hearing aids, are available to people who are hearing impaired. People with cochlear implants, hearing aids, or neither of these two devices also use additional communication devices to reduce the interference of background sounds, or to mediate the problems of distance from sound and poor sound quality caused by reverberation and poor acoustic materials of walls, floors and hard furniture. Three types of wireless, one-way wireless exist along with hard-wired devices. A wireless device used by people who use their residual hearing has two main components. One component sends the sound out to the listener, but is not directly connected to the listener with the hearing loss. The second component of the wireless system, the receiver, detects the sound and sends the sound to the ear of the person with the hearing loss. The three types of wireless devices are the FM system, the audio induction loop and the infra red system. Each system has advantages and benefits for particular uses. The FM system can easily operate in many environments with battery power. It is thus mobile and does not usually require a sound expert for it to work properly. The listener with the hearing loss carries a receiver and an earpiece. Another wireless system is the audio induction loop which permits the listener with hearing loss to be free of wearing a receiver provided that the listener has a hearing aid or cochlear implant processor with an accessory called a "telecoil". If the listener doesn't have a t-coil or telecoil, then she must carry a receiver with an earpiece. The third kind of wireless device for people with hearing loss is the infra red (IR) device which also requires a receiver to be worn by the listener. Usually the emitter for the IR device, that is, the component that sends out the signal, uses an AC adaptor. The advantage of the IR wireless system, is that people in adjoining rooms cannot listen in on conversations, and thus it is confidential and necessary for situations where privacy and confidentialitiy are required or chosen. Another way to achieve confidentiality is to use a hardwired amplifier which sends out no signal beyond the earpiece that is plugged directly into the amplifier. That amplifier of the hardwired device also has a microphone inside of it or plugged into it.
- Hearing dogs, a category of assistance dogs, are trained to help those with hearing impairments.
- The advent of the internet's World Wide Web and closed captioning has given the hearing impaired unprecedented access to information. Electronic mail and online chat have reduced the need for deaf and hard of hearing people to use a third-party Telecommunications Relay Service in order to communicate with the hearing and other hearing impaired people.
Bibliography
- United States Environmental Protection Agency press release, April 2, 1974
References
See also
- Audism, discrimination against Deaf and hard-of-hearing people
- Auditory brainstem response (ABR) test
- Deaf culture
- Hearing loss with craniofacial syndromes
- King-Kopetzky syndrome
- Models of deafness for a comparison of the medical, disability and cultural models of deafness.
- Mondini Dysplasia
- Noise induced hearing loss
- Noise pollution
- Post-lingual hearing impairment
- Pre-lingual deafness
- Tinnitus
- Unilateral hearing loss
External links
- World Health Organization fact sheet on deafness and hearing impairment
- National Association of the Deaf. The NAD protects deaf and hard of hearing civil rights.
- International Federation of Hard Of Hearing Young People
- Hard of Hearing Advocates Non-profit foundation dedicated to helping those with hearing loss
- Inside Deaf Culture Website
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