How speakers work Revealed What exactly is going on?
A loudspeaker, also known as a speaker, is an electronic device that converts electrical signals into sound waves. It is widely used in audio systems, TVs, mobile phones, computers and other equipment, providing us with auditory enjoyment. So, what exactly is a speaker all about? Next, we will demystify the speaker from a physical point of view.
First, the structure of the speaker.
A speaker is mainly composed of a diaphragm, a voice coil, a magnet, and a housing. The diaphragm is the heart of a loudspeaker, and it is responsible for converting electrical signals into sound waves. The voice coil is the driver of the diaphragm, and when an electric current is passed, a force is generated in the magnetic field, which drives the diaphragm to vibrate. The magnet provides the magnetic field to maintain the position of the voice coil. The enclosure protects the internal components and provides the right amount of space.
Second, the working principle.
1.Energized: When a speaker receives an electric current, the voice coil generates a magnetic field that interacts with the magnetic field generated by the magnet.
2.Vibration: The interaction of magnetic fields causes the diaphragm to vibrate, which converts electrical energy into mechanical energy, producing sound waves.
3.Energy conversion: During the entire vibration process of the loudspeaker, electrical energy and sound energy are converted to each other. This process is constantly carried out between the circuit and the diaphragm, which ultimately produces a sound that we can hear.
3. Classification of speakers.
According to different working principles, speakers can be divided into electric type (TEM), electromagnetic type (IE3S), piezoelectric type (BTL) and other types. Each type of speaker is slightly different in structure and working principle, and is suitable for different application scenarios.
Fourth, the performance index of the speaker.
Loudspeakers' performance metrics include frequency response, sensitivity, directivity, and more. The frequency response indicates the sound output range of the speaker, that is, the ability to perform low and high frequencies; Sensitivity indicates the responsiveness of a speaker to sound input; Directivity indicates the characteristics of the sound radiation of a loudspeaker in different directions. These indicators directly affect the sound quality performance of the sound system.
5. Summary. Through the above introduction to the structure and working principle of the loudspeaker, we can clearly understand how the loudspeaker converts electrical signals into sound waves. Starting from the most basic physical principles, we can better understand the performance indicators and classifications of loudspeakers, which can provide us with a reference when selecting and using loudspeakers.
Speakers are an important part of our listening experience, and understanding how they work and how they perform can help us appreciate them better**. Hopefully, this article will be helpful for everyone to understand speakers!