中文说明：
GSM 目前还是现在主要应用的移动系统，2G的演进也是目前平稳向三代过度的重要途径，MUROS，EDGE等都是现在技术演进的关键技术，本代码给出了平台搭建中TCH信道编解码技术，希望对你有所帮助。
English Description：
GSM is still the main mobile system used at present, and the evolution of 2G is also an important way to smoothly transition to the third generation. Muros and edge are the key technologies of the current technology evolution. This code gives the TCH channel encoding and decoding technology in the platform construction, hoping to help you