A miniaturized artificial mastoid using a skull simulator
1998 (English)In: Scandinavian Audiology, ISSN 0105-0397, Vol. 27, no 2, 67-76 p.Article in journal (Refereed) Published
A miniaturized artificial mastoid of size and weight that allow calibration and measurement of bone conduction hearing aids in a conventional audiometric soundproof box has been developed. Its level of mechanical impedance corresponds to the standard IEC 373 (1990) within the frequency range 250 Hz to 8 kHz. The miniaturized artificial mastoid consists of three parts: coupler, skull simulator (TU-1000), and an external electrical correction filter. The soupier is a highly damped mass-spring system designed to give the miniaturized artificial mastoid mechanical impedance in accordance with the standard IEC 373 (1990). It was found that the miniaturized artificial mastoid yielded results that are in correspondence with results obtained with the Bruel and Kjaer type 4930 artificial mastoid for frequencies above 350 Hz. Thus, at these frequencies, the miniaturized artificial mastoid can be used for audiometer calibration as well as measurement of bone conduction hearing aids.
Place, publisher, year, edition, pages
SCANDINAVIAN UNIVERSITY PRESS , 1998. Vol. 27, no 2, 67-76 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-59758ISI: 73917200001PubMedID: 9638825OAI: oai:DiVA.org:liu-59758DiVA: diva2:353395