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