DTMT编码和解码程序。可以把电话号码先编码成为wav文件，再通过解码把它恢复原来的号码-DTMT encoding and decoding process. Phone numbers can be encoded into wav files first, and then put it through the decoder to restore the original number

播放 器是指能播放以数字信号形式存储的视频或音频文件的软件，也指具有播放视频或音频文件功能的电子器件产品。除了少数波形文件外，大多数播放器携带解码器以还原经过压缩媒体文件，播放器还要内置一整套转换频率以及缓冲的算法。-The player is playing stored in digital signal in the form of video or audio file of the software, also refers to the electronic device havin