Safety of the HyperSound® Audio System in subjects with normal hearing

  • Ritvik P. Mehta | drmehta@sdearcenter.com California Hearing & Balance Center, La Jolla, CA, United States.
  • Sara L. Mattson California Hearing & Balance Center, La Jolla, CA, United States.
  • Brian A. Kappus Turtle Beach Corporation, Poway, CA, United States.
  • Robin L. Seitzman Seitzman Consulting, San Diego, CA, United States.

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 preexposure 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.

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Published
2015-11-20
Section
Original Articles
Keywords:
Hypersound®, ultrasonic hearing, directional audio, ultrasound safety.
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How to Cite
Mehta, R., Mattson, S., Kappus, B., & Seitzman, R. (2015). Safety of the HyperSound® Audio System in subjects with normal hearing. Audiology Research, 5(2). https://doi.org/10.4081/audiores.2015.136