对输入的信号实现单点的DFT，然后将信号和频谱在图表上显示-The input signal to achieve a single point DFT, then the signal and the spectrum shown on the chart

声卡的双声道模拟输出，信号的采集与存储，信号的功率(Power spectrum analysis based on labview and data acquisition card, sound card, two-channel analog output signal acquisition and storag)

对信号进行滤波，频谱分析，以及对滤波器的特性进行分析（基于labview的高级信号处理工具箱）(Filtering, spectrum analysis, and analysis of filter characteristics (advanced signal processing toolbox based on labview))