vc6.0编写的iir高通滤波器，可以读取wav文件，显示输入波形和频谱，以及高通滤波后的波形和频谱。还包含有滤波器的验证。-iir vc6.0 prepared by a high-pass filter, you can read wav file, display the input waveform and spectrum, and high-pass filtered waveform and spectrum. Further comprising filter verificat