Microphone is a common tool in our life and work, especially for the sound industry. Knowing more about the microphone can make a better sound.
Although we all commonly see microphones, few people knew the classification and application of microphones at that time.
Next, we will introduce several common microphones to help you better choose and use microphones for sound.
Wonderful voice dubbing: what are the classifications of microphones
One, our common handheld microphone in KTV is a dynamic microphone.
This microphone is composed of a magnet and a film coil. The sound drives the film-added coil to vibrate through the air, and under the action of the magnet, it forms a magnetic line of force cutting to generate a weak current, thereby realizing the sound-to-electric conversion. Due to the cumbersome diaphragm of this type of microphone, the vibration response is very sluggish, resulting in insufficient high-frequency vibration, making the sound dull and poor high-frequency response.
Second, the common headphone, MP4, mobile phone, and walkie-talkie microphones used in daily life are electret microphones.
The size of the electret diaphragm is too small, which makes the low-frequency vibration too fast and the low-frequency response is insufficient. On the contrary, the high-frequency vibration is distorted.
Third, there are common instrument microphones and radio level microphones.
This microphone is also composed of a diaphragm and a back pole, and the technology is much higher than that of an electret microphone. The sound drives the diaphragm to vibrate through the air, and the distance between the diaphragm and the back of the electrode changes, so that the capacitance between the charged diaphragm and the back electrode changes, thereby completing the acoustic-electric conversion.
A slightly more complicated amplifying circuit is adopted behind the diaphragm. The structure and working mode of this microphone are similar to a large diaphragm. Small membrane microphones are superior to electrets in terms of sound. Good low frequency dive ability. However, there is still a small amount of distortion at high frequencies due to the size of the diaphragm.
Fourth, the vertical sound transmission microphone commonly used in professional live studio recording studios.
The capsule structure of this microphone is the same as the small membrane, but the size is increased. The structure is basically the same as the small membrane. High-quality large membranes can basically respond to the range of human voices, with good response in both low and high frequencies, but some large membranes are turbid due to the lack of strict controls in the production.