几篇关于压缩感知的文章，信号为语音信号，对初学者有帮助-Several articles on compressed sensing, signal is a voice signal, help for beginners

几篇关于压缩感知的文章，信号为语音信号，对初学者有帮助-Several articles on compressed sensing, signal is a voice signal, help for beginners

一．PCM编译码脉冲编码调制（PCM）是现代语音通信中数字化的重要编码方式。利用MATLAB语音实现语音信号的脉冲编码调制（PCM）仿真，可以为硬件电路实现提供理论依据。通过仿真展示了PCM编码实现的设计思路及具体过程，并加以进行分析。(Pulse encoding modulation (PCM) is an important way of modern digital encoding in speech communication. To realize the pulse modula