能够进行简单的频率计算，通过输入一个模拟信号没能够用MATLAB计算出相应的信号频率，算法的计算量小，文档完整，文档的附录是MATLAB程序，可以直接在MATLAB中使用(To calculate the simple frequency, through the input of an analog signal can not calculate the signal frequency with corresponding MATLAB algorithm, small amount of calculation, document integrity, document appendix is MATLAB procedures, can be directly used in MATLAB)