Ph.D. Research Proposal Exam: Muhammed Zahid Ozturk

Tuesday, October 19, 2021
11:00 a.m.
KIM 2211
Emily Irwin
301 405 0680

ANNOUNCEMENT: Ph.D. Research Proposal Exam


Name: Muhammed Zahid Ozturk

Committee: K.J. Ray Liu (Chair)

Min Wu

Gang Qu

Date/time:October 19, 2021, 11:00 am

Location: KIM 2211


Title: Sound Sensing with Millimeter Wave Radio and its Applications

Abstract: As the most natural way of human communication, sound sensing has become a ubiquitous modality for human-machine-environment interactions. Despite many environmental sensing capabilities enabled by microphones, they have limitations such as weak source separation when multiple speakers are present, being prone to replay attacks, and reduced performance under noise. Thanks to the availability of next generation communication systems and miniaturized radars, mmWave devices have enabled a plethora of sensing applications in recent years. Mobile phones and smart hubs have embedded mmWave radars for environment sensing. In this proposal, we explore sound sensing by mmWave radars and demonstrate the sensing capabilities through real experiments.

In the preliminary work, we explore how and to what extent ambient sound and sound-induced vibration could be sensed by these sensors. We first establish fundamentals to sense sound from ambient objects, such as a piece of aluminum foil, or active speaker surfaces. We show that, unlike microphones, which sense the sound at the sensor location, radars can sense sound remotely (e.g. from the environment), and robustly. Afterward, we propose a system that can detect and localize the source of a sound, and enhance the noisy radar signals to improve quality. 

Extensive experiments show how our proposed solutions outperform existing work and enable sound sensing under challenging conditions, such as through-wall and through-soundproof objects. For the proposed research, we conduct feasibility experiments for two problems, sound-liveness detection with the side-channel information available by radio, and a multimodal sound enhancement system using the radio channel. Our feasibility studies show great potential in using radio devices for these tasks and we plan to pursue these problems further for the rest of the dissertation.

Audience: Faculty 

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