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Home / News > Dynamic microphone and condenser microphone design principles use the difference


Dynamic microphone and condenser microphone design principles use the difference

Microphones in accordance with the internal structure of the different can be divided into moving coil microphone and condenser microphone two, the former principle is the use beats by dr dre of sound waves to promote the shock film, and then driven by the coil coil, the use of magnetic field lines to produce a weak voltage. This microphone is the most common microphone on the market, most of the stage or hand-held microphone is the most of this, it does not require external power supply can be directly inserted into the speaker system pronunciation, because this microphone is more light , The frequency response is also good, so the high degree of popularity; the latter use the distance between the capacitor to change the voltage and sound waves to promote the same gold-plated diaphragm, and the capacitance of the two metal version of the distance as long as a slight change, Change the output voltage of the microphone, since the capacitor itself needs to be powered first, so you will see some wired microphones need to install the battery, and some must rely on the virtual power supply on the mixer to provide, so if you buy a capacitive Microphone, remember to check whether your mixer is supporting it. Usually the recording room will be biased towards the use of capacitive microphones, because of their high sensitivity, in general, dynamic and frequency response than the moving coil is better, but if the studio noise is not good enough, then you will find Condenser microphone is a kind of distress.

Dynamic Microphones and Capacitive Microphones The use of a differential condenser microphone is superior to a moving microphone in terms of sensitivity and extended high frequency (and sometimes low frequency) response. This is related to the fact that the condenser microphone needs to be first converted to the working principle of the sound signal. Typically, the diaphragm of the condenser microphone is very thin and is susceptible to vibration due to sound pressure, causing a corresponding change in the voltage between the diaphragm and the backplane of the diaphragm chamber. And this voltage change will be followed by the preamplifier multiplier after amplification, and then converted into a sound signal output. The preamplifier referred to here refers to an amplifier built into the microphone, rather than what we usually call "preloaded", that is, the preamplifier on the console or interface. Since the area of ??the condenser microphone diaphragm is very small, its response to low or high frequency sound signals is very sensitive. The vast majority of condenser microphones are able to fine to capture a lot of ears can not hear the sound signal. In contrast, the working principle of moving microphones is much simpler. It mainly through the movement beats by dre wireless of the conductor in the magnetic field to produce the sound signal. In fact, the dynamic microphone microphone sound signal generation, mainly through the diaphragm is closely connected with the beats earphones coil according to changes in sound pressure in the magnetic field in the continuous movement to complete. Since the volume of the moving part is relatively large, the moving microphone is inferior to the condenser microphone in the range of the response frequency (mainly the high frequency part), the sensitivity and the instantaneous response capability.

The sensitivity of the moving microphone is lower than the condenser microphone. Mainly because it does not have the corresponding internal electronic components to the sound signal amplification and buffer. Thus, they usually require more gain than the dynamic microphone. It is for this reason that the sound quality of a moving microphone is usually changed depending on the preamplifier used. However, in the strong sound source conditions, generally do not lead to any adverse consequences, but if the sound source is relatively weak, the problem may be more serious, need to pay special attention. Market demand is the cheap beats catalyst for product innovation. Although few people recommend that we use a moving coil microphone to record acoustic guitar or drums for recording, but in reality, we can see a lot of similar to the live voice recording using a condenser microphone, and the studio Sound recording using dynamic microphone, and even use the condenser microphone to drum recording near the phenomenon, and seems to have achieved good results. This tells us that the key to choosing a microphone is to see if it can achieve its desired effect.