将最小二乘法拟合程序做成动态链接库DLL文件，然后从VC界面调用该DLL文件。在实际项目应用中，这种方法很实用。-Least squares fitting procedure to create a dynamic link library DLL files, and then call the VC interface DLL file. In the actual project applications, this method is very practical.

自己开发的一个任意长度的FFT动态链接库，已通过测试-An arbitrary length FFT to develop their own dynamic link library, has been tested

viterbi算法的C语言实现，以及动态链接库dll文件，可以直接添加到你的工程中，直接调用即可-Viterbi algorithm writen by the C language, as well as the dynamic link library DLL file, can be directly added to your project, you can call directly