digital up and down convert 数字上下变频
The last part gives the test results of digital up convert and digital down convert system, produced by the experimental platform.
论文在最后给出了在处理机实验平台上进行的数字上下变频系统的实验结果。
Digital signal processing is a kind of method that USES mathematical skills to convert or extract information, in order to deal with the real signal which is made up of sequence of Numbers.
数字信号处理是一种通过使用数学技巧执行转换或提取信息，来处理现实信号的方法，这些信号由数字序列表示。
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