实现了对10个数字音的识别，随机调制信号下的模拟ppm，计算时间和二维直方图。- To achieve the recognition of 10 digital sound, Random ppm modulated analog signal under Computing time and two-dimensional histogram.

计算时间和二维直方图,实现了对10个数字音的识别，GSM中GMSK调制信号的产生。- Computing time and two-dimensional histogram, To achieve the recognition of 10 digital sound, GSM is GMSK modulation signal generation.