Classroom Microphones Make Voices Louder, Clearer
Sparks, Md.
Janet Maltese's
voice rises above aural distractions, such as the humming
air-conditioning unit, the clatter of students hustling through the
hallway, and a lawnmower buzzing outside her classroom window. Even
when she stands with her back to her 2nd grade class to write on the
chalkboard, the youngsters can still hear her. But that's not because
she's shouting.
Rather, the soft-spoken teacher is addressing her students through a wireless microphone clipped to her shirt. Amid all the usual classroom noises, her voice carries across the room thanks to one of the many sound-field-amplification systems installed here at the 4-year-old Sparks Elementary School.
"It really saves your voice," said Ms. Maltese,...
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Correction:
The article should have said that Judy Johannes, the director of special education services for the Oconto Falls, Wis., schools, did not know exactly why special education referrals in her district have risen in recent years.
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