In this system, it can acquisition realtime voice signal, process and use the design modem modulate signal.
在系统实现上，做到了实时语音信号的采集和处理并在所设计的调制解调器上进行调制。
It solves the problem of modulate and demodulation of differential signal and achieve data and power signal communication in coaxial-cable.
该模块解决了对差分信号“调制”、“解调”问题，实现了数据和电源在同轴电缆上的同步传输。
The key of the infrared sending program was calling the interrupt subroutine to produce the carrier wave and modulate it with the key signal.
红外发射程序的关键是定时时间到时调用中断程序来产生载波信号，对按键信号和载波信号进行调制。
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