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

Authors :
Odile H. Clavier
James A. Norris
David W. Hinckley
William Hal Martin
Shi Yuan Lee
Sigfrid D. Soli
Douglas S. Brungart
Jaclyn R. Schurman
Erik Larsen
Golbarg Mehraei
Tera M. Quigley
Source :
J Acoust Soc Am
Publication Year :
2022
Publisher :
Acoustical Society of America (ASA), 2022.

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.

Details

ISSN :
00014966
Volume :
152
Database :
OpenAIRE
Journal :
The Journal of the Acoustical Society of America
Accession number :
edsair.doi.dedup.....9824d7cc8b8b26f43a20b9eb8f18d740
Full Text :
https://doi.org/10.1121/10.0012733