Loudspeaker manufacturers: loudspeaker sound principle

A loudspeaker is a device that converts electrical signals into sound, and its principle of sound generation basically utilises the principles of electromagnetic induction and vibration. The following is a brief description of the principle of sound generation in a loudspeaker:

1. Electromagnetic induction: A loudspeaker contains a coil of wire inside, often called a diaphragm, which is subjected to an electric current that produces a magnetic field. When an electric current is passed through the coil, a magnetic field is formed around the coil.

2. Vibration Principle: A permanent magnet, often called a magnet, is placed in the speaker's magnetic field. When current is passed through the coil, the magnetic field around the coil interacts with the magnet to create a force.

3. Vibration drive: This force causes the diaphragm to begin to vibrate. The vibration of the diaphragm creates sound waves which produce sound. The diaphragm will vibrate continuously through the changing current, thus producing a continuous sound.

4. Frequency control: By controlling the frequency and amplitude of the current fed into the coil, the frequency and amplitude of the diaphragm's vibration can be controlled, thus controlling the frequency and volume of the sound emitted by the speaker.

Overall, the principle of loudspeaker sound is to use the current through the coil to generate a magnetic field, and the interaction with the magnet to generate force, drive the diaphragm vibration, thus producing sound. This principle makes the loudspeaker an important device for converting electrical signals into sound, which is widely used in audio equipment, communication equipment, car audio and other fields.