Hearing Aids.

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Presentation transcript:

Hearing Aids

1600- 1700 Hearing aid Trumpets Wide at one end, narrow at the other Worn by Beethoven

1940’s Body Aids Worn around neck Wires Heavy battery

Late 1940’s – for men

1950’s Designed to be decorative Hidden in beards, hair, clothes, scarves

1954 By 1959, 50 % of hearing aids were sold as “glasses” http://beckerexhibits.wustl.edu/did/20thcent/part6.htm

Hearing aids get smaller Late 1950 – early 1960 BTE – Behind the ear

ITE – In the ear http://www.heardenver.org/in-the-ear-hearing-aid-ite.html

1980- 1990 In the canal

1985 – First cochlear implant

Bone Anchored Hearing Aid

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