青少年无论男女一般在14～16岁期间,说话、唱歌时的声音都与孩提时代不同,声带会产生极大的变化,这一特定时期称为“变声期”。“变声期”一般将持续半年至一年。人的发声器官是咽喉部,喉的结构十分精巧,由软骨构成喉的轮廓,里边有声带,发音时气流冲击声带,舌、齿同时配合, Adolescents, both men and women, usually speak different voices during their 14-16 years of age than when they were children. The vocal cords are subject to tremendous change. This particular period is called the “vocal period.” “Variations ” will generally last six months to a year. The human vocal organ is the throat, throat structure is very delicate, the cartilage constitutes the outline of the throat, there are vocal cords, the pronunciation of the impact of vocal cords, tongue, teeth at the same time,