基于Lab view声卡音频演示拍现象

摘要

介绍了利用Lab view演示声波拍现象方法，设计基于声卡的Lab view双通道信号发生器产生两个频率接近的音频信号，分左右声道驱动两个喇叭，相当于两个振源，即形成拍音，并利用信号发生器测量拍频。%Demonstrating Beat phenomenon with Lab view. Using Lab view dual channel signal generator gen-erates a two adjacent frequency. Signal was divided into two channels,amplified to drive the two horns which is equivalent to two sources. You can hear the beat and Measurement of beat frequency.