On the stage, the singer or the musician of the band has to listen to the accompaniment to sing, but the speakers on the stage are facing the audience, so the accompaniment that the singer hears is actually the accompaniment sound that comes out of the speakers on the stage, spreads to the wall at the back of the auditorium and then bounces back to the accompaniment, according to the speed of sound propagation, the sound returns to the singer's ears and the accompaniment heard by the audience has a delay of 1 or 2 seconds, which is closely related to the reflection angle, the length of the reflection, the intensity of the reflection, and the size of the room. Therefore, if the singer listens to the returning accompaniment and then sings, the audience hears that the singer can't keep up with the rhythm!

Therefore, in front of the stage, there will be several particularly large speakers, facing the singer, not the audience, the function of these speakers is to let the accompaniment feedback to the singer's ears in time, so that the singer's singing voice and accompaniment are fused together, even if they are fused together, there will be a certain delay, but people generally can't hear it!

Sometimes the stage is very large, and the sound produced by the speakers at various points on the stage will deviate slightly from a certain point. When this point is fixed, this small deviation does not have a big effect, but when it is moved, these small deviations can have a big impact, even affecting the performance. Therefore, a customized headset with good sound isolation effect and comfortable wearing came into being.

Customized headphones are earphones that are customized according to the shape of each person's ear canal, and the earphone shell is customized. Because it is made according to the shape of the ear canal, the fit between the customized earphones and the ear canal is very good, which can play a role in isolating external sounds, and at the same time, it is very comfortable to wear and not easy to fall off.

Customize the internal structure of the headphones

Different from traditional dynamic headphones, the sound emitted by the moving iron sound generating unit has little to do with the internal shape of the earphones, as long as there is no sound leakage in the sound guide tube, then all the sound in the sound generating unit can flow into the ears, so the sound quality of customized earphones will not be reduced because it is handmade DIY, and the sound quality can be said to be 99% only related to the sound generating unit.

Advantages of custom headphones

Sound isolation ability, the sound isolation method of custom headphones is actually slightly different from that of in-ear headphones, which are leaning on the ear canal to add a rubber plug, while custom headphones are to cover all the pinna including the entrance of the ear canal for sound isolation. From the point of view of effect, the sound insulation effect of these two methods is not much different, even if it is a custom headphone, you can hear the sound of the outside world when there is no music, and when there is music, it is difficult to hear and distinguish the sound of the basic outside world. During a long-distance bus ride, I tested the sound isolation effect of the custom-made headphones, and when the music volume is higher than the maximum volume, I can basically not hear the sound of the car or the sound of the people around me, so I can be immersed in the music. In terms of sound isolation, custom headphones are on par with in-ear headphones.

Wearing comfort, because it is a customized earphone shell according to the shape of each person's ears, then the comfort level of wearing is naturally the most comfortable, and the shell of customized headphones is generally a hard shell, which will be with the whole