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Good Acoustics For A Better Learning Environment
In
a 1995 survey by the General Accounting office, school administrators
ranked poor acoustics as the most significant problem affecting the
learning environment.
In
research of school classrooms, Gary Siebein, University of Florida
professor and researcher, discovered that air conditioning noise was
overpowering the teacher's voice.
"Once
noise levels in a room get above noise criteria of 25 or 30, which
is equivalent to 30 or 35 decibels, most children are unable to understand
what a teacher says from more than 12 feet away," Siebein says. "In
our studies, we found very few classrooms that did not exceed this
noise level."
Siebein is leading an effort to include noise criteria
in national guidelines for classroom construction or renovation. In
November 1999, the U. S. Access Board accepted his findings as part
of the basis for draft standards on school construction and renovation
that could become part of the Americans with Disabilities Act. His
suggestion would establish a maximum allowable background noise level
of 35 decibels in the classroom that Seibein says would make it much
easier for children to concentrate. To accomplish this, the code would
require the air conditioning to be minimized and outside sounds, such
as cars or airplanes, to be decreased with noise reducing windows,
doors, and walls. Builders would be required to use sound absorbing
material on floors, walls and ceilings. Carpet could be an integral
part of this sound reduction.
It is thought that these improvements would also help students with
learning disabilities and attention deficit disorders.
Improving the condition of education is important. The student's ability
to hear the teacher is a basic.
(Information taken from Explore Magazine, Spring 2000 issue, The
University of Florida, "Listen to the Teacher, Good Classroom Acoustics
are Vital to Effective Learning," by Kristin Harmel)
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