Safety of the HyperSound® Audio System in Subjects with Normal Hearing

Audiology Research
Ritvik P MehtaRobin L Seitzman

Abstract

The objective of the study was to assess the safety of the HyperSound® Audio System (HSS), a novel audio system using ultrasound technology, in normal hearing subjects under normal use conditions; we considered pre-exposure and post-exposure test design. We investigated primary and secondary outcome measures: i) temporary threshold shift (TTS), defined as >10 dB shift in pure tone air conduction thresholds and/or a decrement in distortion product otoacoustic emissions (DPOAEs) >10 dB at two or more frequencies; ii) presence of new-onset otologic symptoms after exposure. Twenty adult subjects with normal hearing underwent a pre-exposure assessment (pure tone air conduction audiometry, tympanometry, DPOAEs and otologic symptoms questionnaire) followed by exposure to a 2-h movie with sound delivered through the HSS emitter followed by a post-exposure assessment. No TTS or new-onset otological symptoms were identified. HSS demonstrates excellent safety in normal hearing subjects under normal use conditions.

References

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Oct 23, 2003·International Journal of Audiology·Randall C BeattieChristina A Luna
Feb 5, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·H Wang, M Toda
Jan 27, 2009·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Thomas R NelsonCharles C Church
Apr 25, 2012·Journal of the Association for Research in Otolaryngology : JARO·Stanley HuangElizabeth S Olson
Jul 27, 2014·Occupational and Environmental Medicine·Hanns MoshammerHans-Peter Hutter

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HyperSound®
Maico ERO SCAN Pro

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