Tips for using wireless microphones

Do not grab on the head of the wireless microphone to use:

Many performers use the microphone's network head in the palm to use it, which is the worst posture that seriously damages the sound quality and directivity of the microphone. Using the microphone in this posture will make the original Good characteristics, so lose the tone! The result of holding the net head with the palm is equivalent to isolating the acoustic circuit around the air chamber of the acoustic head or changing the resonant frequency of the air chamber, which will cause the front frequency response characteristics and the separation of the directional characteristics of the microphone to be seriously deteriorated. The effect causes resonance at a certain frequency to enhance the feedback sound. Although wireless microphones are convenient and safe to use because they are not entangled online, users often do not have to study the correct posture of holding the microphone and grab it on the mesh of the microphone. Such a posture will definitely lose the original superior characteristics of the microphone. To use a microphone to reproduce the beautiful original sound of a singing voice, a singer must first learn the correct posture of holding the microphone. The posture of holding the microphone is very simple. Just remember an important principle: no matter how you hold it, do not grab it on the mesh of the microphone; the correct posture should be held on the tube of the microphone.

Grabbing two wireless microphones in one hand is the most serious mistake:

In television programs, I often find that some politicians are holding two or even three wireless microphones in one hand. They are very surprised. This is a very wrong way to use it. I do n’t know if this is a user ’s request or the “creation of a sound engineering company” If it is the former's intention to return it, if it is the latter's professional to make such an arrangement, three big boards should be flogged!

Because when two transmitters with different frequencies are used close to each other, harmonic interference of internal modulation distortion will be generated. The closer or closer the frequency is, the more serious the interference is. The system used in multiple channels at the same time will cause mutual interference and reception. The problem of instability is more serious.

In addition to the problem of high-frequency harmonic interference, more than two wireless microphones are brought together, and more serious is the generation of microphone audio phase and directional interference, which destroys the original sound quality characteristics of the microphone. When the audio phases of the microphones are the same, the outputs of the two microphones will be added, which will increase the volume of the amplifier and generate a feedback sound; on the other hand, the opposite phase will reduce the output of the microphone and cause the volume of the amplifier to be insufficient. The directivity of the microphone also interferes with the closeness of the two microphones, which deteriorates the original excellent pointing characteristics. The degree of degradation of these characteristics is proportional to the distance between the two microphones, so users should avoid holding two microphones in one hand. Or use more than two wireless microphones at the same time to avoid the deterioration of volume, frequency response and directivity. Maybe some people think that taking a few more can avoid the use. In case one of the microphones fails, the other can be used. In fact, to prevent the abnormal use of wireless microphones, this method cannot be used to solve this problem. Instead, because of this wrong use, it will cause more serious changes in characteristics. It is recommended to use " "Replace" instead of "simultaneous" can avoid the above-mentioned defects. If multiple microphones must be used at the same time, the distance between the multiple microphones must be at least 30 cm apart to reduce changes in microphone characteristics.

Use the distance between your wireless microphone and your mouth:

When using a directional wireless microphone to sing, pay attention to the posture of the microphone, because the distance between the microphone and the mouth will significantly change the sensitivity and sound quality, especially because the sensitivity of the microphone is inversely proportional to the square of the mouth distance, so the sound Performers with insufficient throat power cannot take the microphone too far from the mouth, and turn the volume of the amplifier louder, which will easily lead to feedback sound; singers with loud throats do not need to hold the microphone too close to the mouth, which will easily lead to Produces transient saturation distortion of the amplifier.

In addition, because the large-diameter directional microphone has a clear proximity effect, when the microphone is close to the mouth, the bass will increase significantly as the distance decreases. Therefore, if your larynx is insufficient, you can turn the microphone Get closer to your mouth and use the proximity effect to compensate for your bass effect, making your voice thicker and more magnetic. Conversely, if your voice is too low, you can move the microphone away from your mouth to reduce the proximity effect of the microphone and lower the bass. The improvement makes your voice clearer and brighter.

Using the distance between the microphone and the mouth also has a great effect on storm noise (Popping Noise). Especially with microphones with high sensitivity and strong bass response, storm noise will be more serious. In order to reduce the lack of such noise, in addition to paying attention to adjusting the distance used by the microphone, when purchasing a microphone, pay attention to models with good storm noise prevention characteristics. The more advanced the microphone is, the more sophisticated the design of the storm noise prevention is.

As mentioned above, the different characteristics of microphones with the same characteristics will greatly affect the sound effects used. Therefore, singers using wireless microphones should not only have microphones with excellent characteristics, but the more important principle is to own one. Familiar microphone, constantly experience and practice the most correct use of posture, and know how to make good use of the distance between the microphone and the mouth, adjust the volume and tone that are most suitable for your voice, and avoid the most disturbing storm noise. Show the effect of using the microphone.

Avoid using the wireless microphone facing the speaker:

Generally speaking, the wireless microphone used for singing uses a directional capsule, so holding the microphone and using it on the sides or behind the speaker will not cause feedback howling. If you need to stand in front of the speaker, you must pay attention to the direction of the microphone and the speaker at a certain angle, so as not to cause feedback.

Hold the wireless microphone in a vertical or horizontal direction and keep the angle of the speaker more than 90 degrees. This can reduce the occurrence of feedback. The feedback sound between 120 and 140 degrees is the smallest. If you do not understand the directivity of your microphone and face the speaker, it will easily cause a loud feedback. Because the microphone and the speaker face each other is the most taboo angle, under such an angle, no matter any valuable microphone will easily produce a screaming feedback sound.