There are two main types of people who demand "full tone", one is born with defects; The other is that it has no defects in itself and simply wants to pursue the beauty of voice, mainly focusing on people with special occupations, such as teachers, singers, presenters and so on. There are two ways to change the voice in preclinical medicine: one is to change the throat structure by surgery, mainly for patients with physiological lesions, and to remove the lesions by surgery; The other is to change the quality of sound through sound training. "But at present, the technology of sound shaping is not mature, which is not only risky, but also can't completely change the timbre of normal people."

Voice plastic surgery can be carried out to change the frequency of vocal cord vibration by changing the shape of vocal cord, thus changing the thickness of sound. Although the operation is not difficult, "good sound" depends on the basic conditions of sound. In addition, surgery will affect the vocal cavity and vocal system, which is self-defeating. Therefore, if you want to treat bel canto, you must first come to a specialist to clarify your own conditions, vocal cord thickness, and so on. According to the etiology and examination results, the corresponding specialist treatment was carried out. For those who only have incorrect pronunciation position or bad speaking habits, through the correct pronunciation method training, let them learn to speak with appropriate volume, tone and speed, and the effect of sound beauty can be achieved.