TY - JOUR
T1 - Extended high-frequency bone conduction audiometry Calibration of bone conductor transducers in the conventional and extended high-frequency range
AU - Rhebergen, Koenraad S.
N1 - Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.
PY - 2023
Y1 - 2023
N2 - Objective: To monitor ototoxicity, air conduction (AC) extended high frequency (EHF) thresholds can be measured up to 16 kHz. However, conductive hearing loss might influence these results. This is unfortunate because the EHF thresholds are important to follow the impact of ototoxic medication during therapy. Therefore a suitable bone conduction (BC) transducer and norm values for EHF BC measurements are needed. Design: In this study three different BC transducers were used: the B71 (Radioear), the KH70 (Präcitronic), and the KLH96 (Westra). Hearing thresholds were measured from 0.125 to 16 kHz using AC transducers (Telephonics TDH39, Sennheiser HDA200), and BC thresholds from 0.25 to 8 kHz with the B71, and from 0.25 to 16 kHz with the KLH96 and KH70. Study sample: 60 ears of 30 normal hearing subjects were measured. Results: The KLH96 showed the highest output for the high frequencies, and distortion measurements were similar to the KH70. The results show that EHF measurements are possible using the KLH96 and KH70 bone conductors. Conclusion: EHF BC measurements are reliable when using the KLH96 and KH70 bone conductors. The extended force sensitivity of the used artificial mastoid should be determined for a proper EHF BC calibration.
AB - Objective: To monitor ototoxicity, air conduction (AC) extended high frequency (EHF) thresholds can be measured up to 16 kHz. However, conductive hearing loss might influence these results. This is unfortunate because the EHF thresholds are important to follow the impact of ototoxic medication during therapy. Therefore a suitable bone conduction (BC) transducer and norm values for EHF BC measurements are needed. Design: In this study three different BC transducers were used: the B71 (Radioear), the KH70 (Präcitronic), and the KLH96 (Westra). Hearing thresholds were measured from 0.125 to 16 kHz using AC transducers (Telephonics TDH39, Sennheiser HDA200), and BC thresholds from 0.25 to 8 kHz with the B71, and from 0.25 to 16 kHz with the KLH96 and KH70. Study sample: 60 ears of 30 normal hearing subjects were measured. Results: The KLH96 showed the highest output for the high frequencies, and distortion measurements were similar to the KH70. The results show that EHF measurements are possible using the KLH96 and KH70 bone conductors. Conclusion: EHF BC measurements are reliable when using the KLH96 and KH70 bone conductors. The extended force sensitivity of the used artificial mastoid should be determined for a proper EHF BC calibration.
KW - Bone conduction thresholds between 250Hz and 16kHz
KW - Calibration bone conductors
KW - extended high-frequency audiometry
KW - ‘false’ air-bone gap at 4kHz
UR - http://www.scopus.com/inward/record.url?scp=85125699601&partnerID=8YFLogxK
U2 - 10.1080/14992027.2022.2034059
DO - 10.1080/14992027.2022.2034059
M3 - Article
C2 - 35195500
AN - SCOPUS:85125699601
SN - 1499-2027
VL - 62
SP - 182
EP - 191
JO - International Journal of Audiology
JF - International Journal of Audiology
IS - 2
ER -