ZigBee technology-based wireless full-duplex real-time voice transmission device and method
A real-time voice and transmission device technology, applied in voice analysis, wireless communication, duplex signal operation, etc., can solve problems such as the inability to provide full-duplex real-time voice communication functions, achieve improved voice call quality, great practical value, eliminate The effect of misunderstanding
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[0035] see figure 1 , figure 2 , the structural setting of the wireless full-duplex real-time voice transmission device based on ZigBee technology in the present embodiment comprises two identical equivalent devices A and device B, and the structural settings of device A and device B are:
[0036] An electret microphone, which converts the sound signal into an analog voltage signal;
[0037] An electrodynamic loudspeaker that converts a voltage signal into an audio signal;
[0038] A speech processing circuit is a circuit composed of a speech codec chip including a speech collection unit and a speech playback unit and its peripheral components. The speech collection unit receives an analog voltage signal output by an electret microphone, and passes the speech codec chip The internal analog-to-digital converter converts it into a digital voice signal and transmits it to the embedded microcontroller circuit; at the same time, it also receives the digital voice signal output b...
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