Wireless telephone-hearing aid electromagnetic compatibility research at the University of Oklahoma.
J Am Acad Audiol
; 12(6): 301-8, 2001 Jun.
Article
em En
| MEDLINE
| ID: mdl-11440318
ABSTRACT
A multiphase study examining electromagnetic compatibility (EMC) between wireless digital telephones and hearing aids has been under way at the University of Oklahoma EMC Center since May 1995. In a phase 1 clinical study involving 68 hearing aid wearers, interference varied significantly by telephone technology, hearing aid type, and hearing loss characteristics. More than 80 percent of the tests resulted in either no interference or a detection threshold distance less than 1 meter. Metallic shielding of the units yielded positive results. Various elements of phase 2 involved instrument-based tests of hearing aid interference using telephones in a sound-isolation chamber and radio frequency signals in a waveguide, along with clinical studies of speech-to-interference ratios, all leading to the development of standards of measurement and performance criteria for telephone emissions and hearing aid immunity. Results to date confirm that bystander interference is of less concern than user interference, which is the focus of continuing research.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pesquisa
/
Telefone
/
Fenômenos Eletromagnéticos
/
Auxiliares de Audição
Tipo de estudo:
Guideline
Limite:
Humans
País/Região como assunto:
America do norte
Idioma:
En
Revista:
J Am Acad Audiol
Assunto da revista:
AUDIOLOGIA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA