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Sounds constantly occur around us, keeping us aware of our surroundings. People who are deaf have difficulty maintaining an awareness of these ambient sounds. We present an investigation of peripheral, visual displays to help people who are deaf maintain an awareness of sounds in the environment. Our contribution is twofold. First, we present a set of visual design preferences and functional requirements for peripheral visualizations of non-speech audio that will help improve future applications. Visual design preferences include ease of interpretation, glance-ability, and appropriate distractions. Functional requirements include the ability to identify what sound occurred, view a history of displayed sounds, customize the information that is shown, and determine the accuracy of displayed information. Second, we designed, implemented, and evaluated two fully functioning prototypes that embody these …