Reference equivalent threshold sound pressure levels for the Wireless Automated Hearing Test System

Author:

Clavier Odile H.1ORCID,Norris James A.2,Hinckley David W.1,Martin William Hal3,Lee Shi Yuan3,Soli Sigfrid D.4,Brungart Douglas S.5,Schurman Jaclyn R.5,Larsen Erik6,Mehraei Golbarg6,Quigley Tera M.6

Affiliation:

1. Creare LLC, Hanover, New Hampshire 03755, USA

2. Edare LLC, Lebanon, New Hampshire 03766, USA

3. Department of Otolaryngology, National University of Singapore, Singapore, Singapore

4. House Clinic, Los Angeles 90017, California, USA

5. Walter Reed National Military Medical Center, Bethesda, Maryland 20814, USA

6. Decibel Therapeutics, Boston, Massachusetts 02215, USA

Abstract

This paper presents reference equivalent threshold sound pressure levels (RETSPLs) for the Wireless Automated Hearing Test System (WAHTS), a recently commercialized device developed for use as a boothless audiometer. Two initial studies were conducted following the ISO 389-9 standard [ISO 389-9 (2009). “Acoustics—Reference zero for the calibration of audiometric equipment. Part 9: Preferred test conditions for the determinations of reference hearing threshold levels” (International Organization for Standardization, Geneva)]. Although the standard recruitment criteria are intended to yield otologically normal test subjects, the recruited populations appeared to have slightly elevated thresholds [5–10 dB hearing level (HL)]. Comparison of WAHTS thresholds to other clinical audiometric equipment revealed bias errors that were consistent with the elevated thresholds of the RETSPL populations. As the objective of RETSPLs is to ensure consistent thresholds regardless of the equipment, this paper presents the RETSPLs initially obtained following ISO 389-9:2009 and suggested correction to account for the elevated HLs of the originally recruited populations. Two additional independent studies demonstrate the validity of these corrected thresholds.

Funder

National Institute on Deafness and Other Communication Disorders

Defense Health Agency

Publisher

Acoustical Society of America (ASA)

Subject

Acoustics and Ultrasonics,Arts and Humanities (miscellaneous)

Reference45 articles.

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2. ANSI (2018). S3.6, American National Standard Specification for Audiometers ( Acoustical Society of America, New York).

3. Children with Minimal Sensorineural Hearing Loss: Prevalence, Educational Performance, and Functional Status

4. Supra-aural transducer-related artifact contributes to overestimation of noise-induced hearing loss

5. Using tablet-based technology to deliver time-efficient ototoxicity monitoring

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