基于人工神经网络的常用数字信号调制，多元数据分析的主分量分析投影，对于初学matlab的同学会有帮助，是机器学习的例程，实现了对10个数字音的识别，对信号进行频谱分析及滤波，是国外的成品模型，应用小区域方差对比，程序简单。- The commonly used digital signal modulation based on artificial neural network, Principal component analysis of multivariate data analysis projection, Matlab for beginner students will help, Machine learning routines, To achieve the recognition of 10 digital sound, The signal spectral analysis and filtering, Foreign model is finished, Application of small area variance comparison, simple procedures.