Document Detail

Interaural attenuation for tubephone insert earphones.
MedLine Citation:
PMID:  3678645     Owner:  NLM     Status:  MEDLINE    
Interaural attenuation of pure tone and speech signals was evaluated for a new audiometric insert earphone, the ER-3A tubephone, and a conventional TDH-49P supra-aural earphone in seven unilaterally deaf adult subjects. These results validate and extend the interaural attenuation data reported by the manufacturer of the ER-3A and his associates. At frequencies of 0.5 to 1 kHz, mean interaural attenuation for the deeply inserted ER-3A decreased from 94+ dB to 81 dB, with the lowest value for any subject, 75 dB. Interaural attenuation for speech approximated that of the 1 to 2 kHz frequency range. The ER-3A tubephone provides significantly greater acoustic isolation between the two ears in the low-mid frequency audiometric range than the conventional supra-aural earphone.
D A Sklare; L J Denenberg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ear and hearing     Volume:  8     ISSN:  0196-0202     ISO Abbreviation:  Ear Hear     Publication Date:  1987 Oct 
Date Detail:
Created Date:  1988-01-19     Completed Date:  1988-01-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8005585     Medline TA:  Ear Hear     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  298-300     Citation Subset:  IM    
Clinical Audiology, National Institutes of Health, Bethesda, Maryland.
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MeSH Terms
Hearing Aids*
Middle Aged

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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