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- W2372912665 abstract "Sound source's vibration spreads in the medium to form sound wave.When the sound pressure acts on the diaphragm of speaker,the diaphragm will vibrate.It will also drive the coil which is stick-on it to vibrate in the magnetic field of the magnet.When the coil is linked to a closed circuit,the electric current occurs.Then the magnet will have ampere force on it to hinder its vibration.If we provide the coil the right electric current,we can strengthen the ampere force strong enough to offset the action of the sound pressure so that we can hinder the diaphragm's vibration and stop the sound wave from spreading.In this experiment we have another speaker which has the same peculiarity to provide that kind of electric current.Moreover we use the magnify circuit to adjust the electric current.Through the principle above we get a model which can weaken sounds in special frequency range." @default.
- W2372912665 created "2016-06-24" @default.
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- W2372912665 date "2008-01-01" @default.
- W2372912665 modified "2023-09-25" @default.
- W2372912665 title "Study on the Principle and Model about Reducing Noise" @default.
- W2372912665 hasPublicationYear "2008" @default.
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