Abstract
Background:
Some musicians may play the music louder while using earplugs thus reducing the effectiveness
of the hearing protection offered by earplugs. In addition, the dynamic range (DR)
of the music may be altered because of the use of earplugs with negative impact on
perceived quality of music. There are some cultural differences in attitudes toward
loudness, which may lead to differences in the loudness of music played by musicians
from different cultures.
Purpose:
To investigate the effect of the use of two different types of earplugs on the loudness
and DR of music played by musicians of Caucasian and Filipino origins.
Research Design:
Quasi-experimental repeated measures design.
Study Sample:
Thirty six musicians with normal hearing within the age range of 18–49 yr. Fifteen
were of Caucasian (eight men and 7 women) origin and 21 were of the Filipino (nine
men and 12 women) origin.
Intervention:
All participants received a brief educational session, which included information
on music-induced hearing loss, the benefit of using earplugs, and the correct procedures
for inserting and removing earplugs. They played music in five different conditions
(three min each): Trial 1 of conventional and musicians’ earplugs in random order,
no earplug, and trial 2 of conventional and musicians’ earplugs in random order.
Data Collection and Analysis:
Maximum, minimum, average (average sound level measured over the measurement period;
LAVG), and peak levels were recorded using a dosimeter while playing music in each
of the five conditions. The DR was derived by subtracting the minimum values from
the maximum values. A different measure of the dynamic range 2 (DR2) was derived by
subtracting the LAVG value from the peak value. Mixed analyses of variance (ANOVA)
(Cultural origin and Gender as nonrepeated variables) was performed on LAVG, DR, and
DR2.
Results:
Based on the LAVG levels yielded by them, 42–61% of the musicians may be at risk for
hearing loss. The mixed ANOVA revealed some main effects of culture and some significant
interactions involving cultural origin, the plug conditions, type of earplugs, and
trial number.
Conclusions:
Use of earplugs may vary the overall loudness of music, the DR, or the DR2 in some
musicians depending on the type of earplugs and cultural origin, and the effect may
change with practice.
Key Words
Caucasian - culture - earplugs - Filipino - hearing protection devices - loud music
- musician
