Characteristics of Musicians' Earplugs as a Function of Jaw Position Page: 39
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39
Subjective Testing
Initial Reactions
The subjects were asked to try on each set of earplugs with the 15dB filter inserted and
give initial reactions without knowing which earplug was being tested. They were asked for
their subjective impressions of how the inserted plugs felt while the jaw was stationary and while
moving their jaw. In addition, they were asked to judge the quality of sound as they heard it
through the earplugs. Earplug A, the earplug created while the jaw was in a stationary position,
was first, and earplug B, the earplug made while the jaw was protruded, was second fitted for
each subject.
Subject One, the trumpet player, had previously used musicians' earplugs; therefore, he
was able to compare the new earplugs to his prior experiences, which had been unfavorable. The
subject was pleased with earplug set A. He reported that the left earplug felt tighter than the
right. The occlusion effect was evident for the subject, and he described a "wooh" sound in his
ear when he moved his jaw. He further explained the sound was like a flow of moving air or
water. The subject felt an immediate difference when earplug B replaced earplug A. He
explained that in both ears the second set of earplugs was tighter than the first, not
uncomfortable, merely "snugger". This was perceived as a positive result as it implied a tighter
seal, which is necessary for better attenuation. Subject one reported a softer level of the "wooh"
sound when he moved his jaw while wearing earplug B.
Subject two, the saxophone player, was accustomed to using over the counter earplugs
while listening to loud music; therefore, the musicians' earplugs were not entirely foreign to him.
He found both sets to be equally comfortable, but he sensed a difference in attenuation. He
reported that earplug A made voices muffled, and he was not sure if he was talking loud enough.
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Reference the current page of this Thesis Or Dissertation.
Archer, Jennifer A. Characteristics of Musicians' Earplugs as a Function of Jaw Position, thesis or dissertation, Summer 2002; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc146487/m1/44/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Honors College.