The Acceptable Noise Level and the Pure-Tone Audiogram

Author:

Jonas Brännström K.1,Olsen Steen Østergaard2

Affiliation:

1. Department of Clinical Science, Section of Logopedics, Phoniatrics and Audiology, Lund University, Sweden

2. Research Laboratory, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Rigshospitalet, Copenhagen, Denmark

Abstract

PurposeThe vast majority of previous studies suggest that there is no relationship between the acceptable noise level (ANL) and pure-tone hearing thresholds reported as the average pure-tone hearing thresholds (pure-tone average). This study aims to explore (a) the relationship between hearing thresholds at individual frequencies and the ANL and (b) a measure of the slope of the audiogram and ANL.MethodSixty-three Danish adult hearing aid users participated. Assessments were pure-tone audiogram and 3 different versions of the ANL test made monaurally at 2 different sessions.ResultsThe findings show that low-frequency hearing thresholds and the slope of the audiogram are significantly related to all versions of the ANL.ConclusionIt is possible that previous studies have failed to discover a relationship between ANL and hearing thresholds due to the use of the broad 4-frequency pure-tone average. This has implications for our understanding of the ANL test.

Publisher

American Speech Language Hearing Association

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