Grabbing two wireless microphones at once is the worst mistake:
When two transmitters with different frequencies are used close to each other, harmonic interference with internal modulation distortion will occur, and the closer or higher the frequency, the more serious the interference will be. In a multi-channel system used at the same time, the problem of mutual interference and receiving instability is more serious.
Multiple wireless microphones close together, in addition to the problem of high-frequency harmonic interference, the more serious is the sound phase and directional interference of the microphone, which destroys the original normal sound quality characteristics of the microphone. If the microphone audio phase is the same, the output of the two microphones will be added together, which will cause the amplifier volume to rise, resulting in a feedback sound; On the contrary, due to the opposite phase, it will make the output of the amplifier worse, resulting in insufficient volume of the amplifier. The directivity of the microphone will also interfere with each other due to the proximity of the two microphones, so that the original excellent pointer characteristics degenerate, the degree of deterioration of these characteristics, with the distance between the two microphones is proportional to the user should avoid holding two or more wireless microphones at the same time, so as not to cause volume, frequency response and directivity decline. Perhaps some people think that by taking a few more microphones, they can avoid the failure of one microphone in use, and the other can still be used. In fact, to prevent abnormal phenomena in the use of wireless microphones, this "foot in two boats" approach can be solved, on the contrary, because the use of this wrong way of use will cause more serious problems of characteristic changes, so it is recommended to replace the use of "alternative" with "at the same time" to avoid the above deficiencies. If you want to use multiple microphones at the same time, the distance between the multiple microphones must be at least 30 cm to reduce changes to the characteristics of the microphone.
Third, distance education
When singing with the indicating wireless microphone, pay attention to the posture of holding the microphone, because the distance between the microphone and the mouth is far, the sensitivity and sound quality will have quite obvious changes, especially because the sensitivity of the microphone is inversely proportional to the square of the distance between the mouth, so the performer who has insufficient voice throat force can not hold the microphone, the transition saturation is too high, so that the performer can not hold the microphone too close to the mouth. So don't hold the microphone too close.
In addition, because the large diameter directional microphone has a very obvious Proximityeffect characteristic, when the microphone is close to the mouth, it will greatly improve the bass, so if your voice larynx bass is not enough bass, you can put the microphone closer to the mouth, using the proximity effect to compensate for your bass effect. Make your voice thicker and brighter.
Using the distance from the microphone to the mouth also has a great impact on storm noise, especially when the microphone is highly sensitive and responsive, storm noise will be more serious. In order to reduce the loss of this noise, in addition to paying attention to the optimal distance used to adjust the microphone, the selection of the microphone should pay more attention to the good anti-riot noise characteristics of the machine, the more advanced the microphone can prevent storm noise.
4. Literacy
Usually, the wireless microphone used for singing has a directional sound head, so holding the microphone to stand on either side of the speaker or behind the speaker, and using the microphone is less likely to produce a feedback whistle. If you want to stand in front of the speaker, you must pay attention to the direction of the microphone and the speaker should be controlled at a certain Angle, without echo.
The position of holding the wireless microphone is more than 90 degrees in the vertical or horizontal direction and the Angle of the speaker, which can reduce the occurrence of feedback sound. The heart-oriented microphone front and the speaker are 180 degrees or the super-directional microphone front and the speaker are 120 to 140 degrees. If you do not understand the directivity of your use of the microphone, and use it in the face of the speaker, it is easy to cause large volume feedback. Since the microphone is facing the speaker is the most taboo Angle, at such an Angle, no matter the expensive microphone will easily produce a scream echo.