调制解调器（即Modem），是计算机与电话线之间进行信号转换的装置，由调制器和解调器两部分组成，调制器是把计算机的数字信号（如文件等）调制成可在电话线上传输的声音信号的装置，在接收端，解调器再把声音信号转换成计算机能接收的数字信号。-Modem (Modem), is a computer and telephone line between a signal conversion device that consists of two parts, modulator and demodula

ＬabView 声音转换，将电脑声卡获取的时域信号转换成频率信号．-LabView sound converter, the computer sound card to obtain the time domain signal into a frequency signal.

能够实现声音文件到字符串文件的转换，能够将字符串文件还原成声音文件-Enables audio files to convert strings file, it is possible to restore the files to the string sound file