Resonance chambers are used for all your voices when singing. The use of resonance chambers ranges from bass singing to high-pitching, and more chest sounds are used in the low-pitched zone. At this time, when you are covering your chest, you will find that your chest is vibrating. The mid-tone zone is also the natural sound zone. Sing this In the sound zone, oral resonance is the main thing. The chest is not as obvious as when singing bass, and the tone of the sound is also bright. When singing high notes, we need to use the head cavity resonance. At this time, we should pay attention to open the mouth and lift the upper mouth cover, which is a bit like yawning. When singing, I feel the head or eyebrows vibrate. This is the head cavity resonance. kick in. In short, no matter which sound zone is sung, the three resonant cavities are working, but the main resonant cavities are different for different sound regions.