数字-数字数据变换器
digital-to-digital data converter
带正负号数字数字系统
signed digit number system
全数字化数据存储
total digital data storage
声音数字信号处理
acoustic digital signal process
数字化声源
digital sound source
digital acoustical source
数字声音广播
digital audio broadcasting DAB
dab
语音数字化速率
VDR Voice – Digitization Rate
VDR Voice C Digitization Rate