How to Play the Recorded Content with the Recording Speaker for Epidemic Prevention and Control

How to Play the Recorded Content with the Recording Speaker for Epidemic Prevention and Control

This speaker belongs to a recording player. It has a recording button. First, press the switch key to the "recording" file, then press and hold the recording button by hand, release the button after recording, and then press the switch key to the "playback position". I think the speaker is actually a conversion device that converts electric energy into sound. When different electric energy is transmitted to the coil, the energy generated by the coil interacts with the magnetic field of the magnet.

This interaction causes the paper tray to vibrate. Because the electronic energy changes at any time, the coil of the horn will move forward or backward, so the paper tray of the horn will also move with it. This action changes the density of air and produces sound.