一个完整的语音端点检测MATLAB程序，包含有完整的文件，通过调试，正确可用,A complete voice activity detection MATLAB procedures, contains the complete document, through commissioning, can be used correctly

用matlab程序仿真QPSK系统中调制、解调，懂得QPSK通信系统的真正内涵-QPSK simulation with matlab program system modulation, demodulation, QPSK communication system to understand the real meaning of

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