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,旋转机械二维全息谱计算，matlab实现了五类灰色关联度模型的计算。- Computing time and two-dimensional histogram, Rotating machinery 2-d holographic spectrum calculation, matlab implements five gray correlation degree computing model.