What are the differences in operating principles between speakers and microphones? Now let's listen to the professional speaker manufacturers.
Microphone working principle: a converter that converts sound into electrical energy. The principle of wireless microphone technology is to convert audio signal into wireless transmission frequency suitable for wireless transmission. The process of adding information from audio signals to RF signals is called modulation. The modulated signal is located in a frequency range more suitable for wireless transmission. Because it can be modulated by different frequencies in the RF frequency band, the transmission path of electromagnetic wave can be used for many times, and a large number of audio signals can be transmitted on different RF frequencies.
Lebo K2 is a condenser microphone. An extremely thin metal diaphragm is used as the first stage of the capacitor, and another metal backplane close to it is used as the other pole. In this way, the vibration of the diaphragm will cause changes in the capacitance to form electrical signals.
Working principle of loudspeaker: when audio current is applied to the voice coil of loudspeaker, the voice coil will generate an alternating magnetic field under the action of current, and the permanent magnet will also generate a constant magnetic field with the same size and direction. Because the size and direction of the magnetic field generated by the voice coil change with the change of audio current, the interaction of these two magnetic fields makes the voice coil move perpendicular to the current direction in the voice coil.
Because the voice coil is connected with the diaphragm, it drives the diaphragm to vibrate. The vibration of the diaphragm causes air vibration and sound. When the input current of the voice coil is larger, the force of its magnetic field is larger, the vibration amplitude of the diaphragm is larger, and the sound is larger. The high pitch part of the loudspeaker is mainly in the center of the diaphragm. The harder the material in the center of the diaphragm, the better the sound will be reproduced. The bass part of the speaker is mainly at the edge of the diaphragm. If the edge of the diaphragm of the speaker is soft and the diameter of the paper cone is large, the bass effect of the speaker will be better.
Difference: The loudspeaker converts the signal you input into electromagnetism through electromagnetic principle, and then sends out the sound. The sound of the microphone is tested. Your messenger converts your information source into sound, and then enters the CPU sent to the computer control system, that is, the computer, for processing.
