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This paper introduces SmartBelt, a wearable microphone array on a belt thatperforms sound source localization and returns the direction of arrival withrespect to the user waist. One of the haptic motors on the belt then vibratesin the corresponding direction to provide useful feedback to the user. We alsointroduce a simple calibration step to adapt the belt to different waist sizes.Experiments are performed to confirm the accuracy of this wearable sound sourcelocalization system, and results show a Mean Average Error (MAE) of 2.90degrees, and a correct haptic motor selection with a rate of 92.3%. Resultssuggest the device can provide useful haptic feedback, and will be evaluated ina study with people having hearing impairments.

SmartBelt: A Wearable Microphone Array for Sound Source Localization with Haptic Feedback