Canadian Journal of Speech-Language Pathology and Audiology

Preferred Listening Levels Among Personal FM System Users With Severe-to-Profound Hearing Impairment

 
Author(s) Sandra E. Vandenhoff, MSc
Andrew Stuart, PhD
Volume 23
Number 3
Year 1999
Page(s) 134-141
Language English
Category
Keywords preferred
listening
level
FM
system
hearing
aid
Abstract Hearing aid (HA) and frequency modulated (FM) preferred listening levels were assessed among five participants with severe-to-profound hearing impairment. Participants utilized behind-the-ear HAs coupled to a personal FM (PFM) via direct audio input. Two amplification modes (i.e., HA microphone alone and FM microphone alone) and two listening conditions (i.e., in quiet and in competing noise) were investigated. High frequency average, peak, and overall RMS output, along with output at 500 and 1000 Hz were obtained from postlistening 2 cm3 electroacoustical analyses. Results demonstrated that participants, in general, preferred statistically significant louder listening level outputs with their FM systems as indexed by high frequency average, overall RMS, 500 Hz, and 1000 Hz outputs (p < .05). Further, participants preferred the same output levels regardless of listening in quiet or noise (p > .05). The reason(s) for differences between HA and FM preferred listening level outputs remains to be found.



On a évalué les niveaux d’écoute préférés par prothèse auditive (PA) et par système de modulation de fréquence (MF) chez cinq participants ayant une déficience auditive de sévère à profonde. Les participants utilisaient une PA « derrière l’oreille » couplée à un appareil MF personnel (PFM) par entrée audio directe. On a étudié deux modes d’amplification (microphone PA seul et microphone MF seul) ainsi que deux conditions d’écoute (silence et bruits concurrents). L’expertise électroacoustique a tenu compte de la moyenne des hautes fréquences, du rendement maximal et du niveau de sortie RMS, ainsi que des rendement aux fréquences 500 et 1000Hz. Les résultats ont montré qu’en général, les participants préféraient des niveaux d’une importance statistiquement plus élevés avec leurs appareils MF, selon la moyenne en haute fréquence, les résultats RMS et les résultats à 500 et 1 000 Hz. En outre, les participants préféraient les mêmes niveaux de sortie, que ce soit en conditions de silence ou de bruit (p > .05). Il reste à expliquer les différences des niveaux de sortie préférés entre les appareils PA et MF.
Record ID 72
Link http://cjslpa.ca/files/1999_JSLPA_Vol_23/No_03_101-160/Vandenhoff_Stuart_JSLPA_1999.pdf
 
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