蓝牙语音的编解码有三种模式：CVSD、A Law、 u Law。本文件实现以上三种编解码方式。其中包括C代码，matlab代码以及verilog代码。-Bluetooth voice codec has three modes: CVSD, A Law, u Law. This file implements the above three codec. Including the C code, matlab code and verilog code