News & Case
Oct 21,2022
Operating principle difference between microphone and loudspeaker
The microphone converts sound signal into signal, while the speaker conversely means that the microphone can collect sound, while the speaker can only play sound.
The external sound waves vibrate the film of the microphone through the air. The film drives the voice coil to cut the magnetic line of force of the magnet and generate an electrical signal. The higher the sound wave vibration frequency is, the greater the electrical signal generated and the greater the sound output through the power amplifier
When a person speaks into the microphone, sound waves cause the diaphragm to vibrate. The diaphragm squeezes carbon particles loosely and tightly, and the resistance changes accordingly. A current that changes with the sound vibration is generated in the circuit, that is, the microphone is equivalent to a variable resistance.
One is input, and the other is output. The two interfaces are different. On the computer, the microphone is connected to the pink jack, and the speaker is connected to the green jack. The sound can only be heard if it is connected correctly. If it is connected incorrectly, there will be no sound or no recognition.
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