matlab pcm 数字电话 通讯仿真 无解压密码，第一次发程序，大家支持-Matlab PCM digital telephone communications simulation without extracting passwords, the first grant procedures, we support

Abstract-The effect of the companding process on QAM signals has been under investigation for the past several years. The compander, included in the PCM telephone network to improve voice performance, has an unusual affect on digital QAM data