Non-contact far-field speech detection

This project aims to demonstrate the feasibility of using the radar system to detect non-contact or remote speech detection. Experimental results with a CW radar below 6GHz are presented to validate the concept. The radar was directed towards the loudspeaker to capture the audio signal from 4 meters away. The captured IF signal from the experiment at different frequencies and scenarios was processed. The results obtained with radar were compared to those recorded with a microphone. This remote radar technique’s accurate detection of speech signals has been demonstrated.