青春期是人体一生中变化的急转弯。在这个时期内,一个人无论在骨骼、肌肉、神经上,还是在精神心理方面,都要发生巨大的变化。和身体的其它系统一样。人的发声器官、发声心理也要有个显著的改变。孩子们再不会象过去那样说话和唱歌都用童声了。男孩子的声音变粗、音调低沉。女孩子的嗓音也要发生改变,不过大多数自己往往觉察不到。医学上把青春期孩子的嗓音从童声向成人声音过渡的这个时期称作变声期。变声期是人体一生之中 Adolescence is a sharp turn in the body’s life changes. During this period, a person undergoes tremendous changes in terms of their bones, muscles, nerves, and psychology. Same as other body systems. People’s vocal organs, voice psychology also have a significant change. The children no longer use the voice of the child as they used to be and when they sing. The boy’s voice thicker, low pitch. The girls’ voices also change, but most often do not notice themselves. Medically, the period of adolescent children’s voice transition from children’s voice to adult voice is called the vocal period. Vocal period is the body’s life