The sound principle of the speaker
The speaker is composed of T iron, magnet, voice coil and diaphragm. When the AC current passes through the coil (voice coil) of the horn, a corresponding magnetic field is generated in the voice coil. This magnetic field interacts with the magnetic field generated by the magnet on the horn. The magnetic field of the permanent magnet with the band vibrates with the audio current. The diaphragm and the voice coil are connected together. When the voice coil and the horn diaphragm vibrate together, it pushes the surrounding air to vibrate, and the speaker produces sound. As shown in the figure above, this is the principle of horn sound.
