By Haberman, C., Ruhland, E., Frank, J., Kelsay, J. & Desmond, J.

This report outlines the results of surveys assessing citizens’ views of the Cincinnati Police Department (CPD) and its response to shootings in Cincinnati’s Price Hill neighborhood before and after the implementation of ShotSpotter, an acoustic gunshot detection system. An acoustic gunshot detection system uses sensors to detect gun fire. For ShotSpotter, the sensors listen for gunshot noises. When gunshot-like noises are detected, the sound waves are analyzed and reviewed by technicians at ShotSpotter’s headquarters who determine if the sound was a gunshot or something else, such as fireworks. If the noise is determined to be a gunshot, then police are dispatched to the scene. The precise shooting scene is located by triangulating gunshot sounds across sensors. The time from gunshot to dispatch is roughly 60 seconds.1 ShotSpotter allows police to quickly respond to gunfire incidents, even if residents do not call 911, to make an arrest at the scene. Research suggests roughly 88% of gunshots recorded by ShotSpotter are not reported to the police by residents.2 It follows that implementing ShotSpotter may improve residents’ perceptions of CPD and its response to shootings because police are now responding to all gunfire incidents. This report assesses if that was the case when ShotSpotter was implemented in Cincinnati’s Price Hill neighborhood in July 2019.   

Cincinnati, OH: Institute of Crime Science, University of Cincinnati, 2020. 17p.