这是扫描仪滤波器的主要模块。 此过滤器会扫描文件中的数据，允许一个开放的继续进行之前。这是类似于病毒检查做。-This is the main module of the scanner filter. This filter scans the data in a file before allowing an open to proceed. This is similar to what virus checkers do.

通信系统仿真的代码，例如带通滤波器，高通滤波器，带通滤波器-Communication system simulation code, such as a band-pass filter, high pass filter, a band-pass filter

windows下面音频自定义滤波器的编程sAPO-sAPO promising about windows audio driver