1. Multicenter Study on the Impact of the Masker Babble Spectrum on the Acceptable Noise Level (ANL) Test
- Author
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Mark Laureyns, Giorgia Pugliese, Melinda Freyaldenhoven Bryan, Marieke Willekens, Anna Maria Gasbarre, Diego Zanetti, Julien Gilson, Paul Van Doren, and Federica Di Berardino
- Subjects
acceptable noise level ,ANL test ,noise tolerance in hearing impairment ,hearing impairment ANL ,ANL test masker babble spectrum ,Otorhinolaryngology ,RF1-547 - Abstract
Introduction: Acceptable Noise Level (ANL) is defined as the most comfortable level (MCL) intensity for speech and is calculated by subtracting the maximum noise tolerable by an individual. The ANL test has been used over time to predict hearing aid use and the impact of digital noise reduction. This study analyzes this impact by using different masker babble spectra when performing the ANL test in both hearing-impaired and healthy subjects in three different languages (Dutch, French, and Italian). Materials and Methods: A total of 198 patients underwent the ANL test in their native language using a standardized protocol. The babble file was speech-weighted to match the long-term spectrum of the specific ANL language version. ANL was proposed in three different masking conditions: with multitalker Matched babble speech noise, with the same masking signal with the spectrum reduced from 2 kHz onwards (High Cut), and with the spectrum increased from 2 kHz onwards (High Boost). Results: In all of the comparisons among the three languages, ANL with High Boost noise gave significantly higher (worse) scores than ANL with Matched noise (p-value S1: p-value S1: 0.0002, S2:
- Published
- 2024
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