In order to promote high school students'ability of exploring physical phenomena in daily life ,and to improve the teaching effect .In this paper ,the beat frequency of two similar component sound waves is studied by using a PC soundcard based scope software ,and several applications are also discussed .%为了实现在日常生活中培养中学生探究物理现象的能力，本文利用家庭计算机和Scope软件辅助探究了两个频率相近的声波相遇时产生的拍频现象，并给出了生活中的一些拓展应用实例，以期达到提高教学效果的目的。
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