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