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- 通信原理课件_第4章_模拟通信系统,模拟通信系统调制与解调原理,-Communication Theory Chapter 4 _ _ courseware analog communication systems, analog modulation and demodulation communication system
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- VB编写的东晋模拟中继语音卡的实例 是一个发票查询系统,数据库和DLL需要向设备供应商索要-Eastern VB, analog voice cards in the instance of the relay is an invoice query system, database and DLL vendors need to ask
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- C代码实现的GSM全速率语音编解码,GSM系统是一种全数字系统,话音和其它信号都要进行数字化处理,因此移动台首先要将语音信号转换成模拟电信号,以及其反变换,移动台再把这模拟电信号转换成13Kbit/s的数字信号,用于无线传输-GSM full rate speech code-decode.GSM system is a full digital system, voice and other signals to digital processing, so the mobile statio