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Choose dynamic microphone or condenser microphone?

Author:admin   AddTime:2021-03-04

Broadcasting, dubbing, recording, recording studios, these have gone deep into life. Microphones are very important for anchors and voice actors. According to the working methods, there are three types of microphones, namely, tube microphones, condenser microphones and dynamic microphones.

1. The working principle is different. The dynamic microphone cuts the magnetic lines of force to generate electricity through the vibration of the microphone diaphragm. The principle of electromagnetic induction is applied, and physical energy is converted into electrical energy. A wire coil is mounted on the diaphragm, and the wire coil is placed between the magnetic field of the magnet. The wire coil will continue to move in the magnetic field as the sound changes to generate an induced current. The induced current will convert the sound signal into an electrical signal. The wire is mounted on the diaphragm and placed between the magnetic field of the magnet. As the sound pressure changes, it continuously moves in the magnetic field to generate an induced current, thereby turning the sound into an electrical signal. Condenser microphones use the principle of capacitor charging and discharging. When recording, the vibration of the sound will drive one plate of the capacitor, and the vibration of the plate will change the distance between the two plates, thereby changing the capacitance. When the capacitance becomes smaller, the capacitor will discharge, so that current is generated in the circuit, and the sound signal is converted into an electrical signal. When the capacitor becomes larger, the capacitor will charge the capacitor.

2. The structure is different. The moving coil is mainly composed of a coil, a diaphragm and a shell, with a firm structure, good performance and very durable. At the same time, the operation of the dynamic microphone is very simple, and it can be used after connecting to the device. Therefore, most of the microphones we usually use in KTV are dynamic microphones. The structure of the internal capacitor of the condenser microphone capsule is more complicated, and the plate is not only expensive but also fragile, but also afraid of falling and moisture, and high maintenance costs, which are common in recording studios. There is another difference between the capacitor and the moving coil structure. There is an amplifier in the condenser microphone, which needs power supply to work. This power supply is usually designed as an external power supply. This power supply is called a "phantom power supply."



3. The sound quality is different. The dynamic microphone is widely used in entertainment occasions such as KTV or performances because it can make the sound soft and hazy, and make the singer's singing voice fuller and rounder. It has a very good directivity and picks up more in the opposite direction. , It has the effect of suppressing the surrounding noise, so it is more suitable for noisy occasions. The disadvantage is that its sensitivity is relatively low, the frequency is not wide enough, the treble range extension is not good enough, it will be slower for subtle sounds, and the sound quality is not very good. Condenser microphone is the first choice for professional singers because of its high sensitivity, wide frequency response, fast instantaneous response, high sound reproduction, capable of handling high boosts calmly, and showing the singer's beautiful voice. It is widely used in professional vocals. Singing, film and television recording, musical instrument audition and other occasions, it is the best choice for recording. However, due to the high sensitivity of condenser microphones, it is easy to collect the noise of the surrounding environment, so it is not suitable for large-scale outdoor performances and high-noise environments such as the same period of film and television.

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