Acoustic Waves Generated by a Loudspeaker

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A loudspeaker converts electrical energy to accoustic (sound) energy generated by an electromagnet in a magnetic field. The electrical current flowing through the coil oscillates between 20 and 20000 times per second (Hz). This causes the diaphragm—a paper cone attached to a metal frame called the basket—to vibrate, thus generating the acoustic waves.
Contributed by: Enrique Zeleny (April 2012)
Open content licensed under CC BY-NC-SA
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"Acoustic Waves Generated by a Loudspeaker"
http://demonstrations.wolfram.com/AcousticWavesGeneratedByALoudspeaker/
Wolfram Demonstrations Project
Published: April 12 2012