14. A system comprising: one or more processors; and computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: causing display of an image on a surface; determining a characteristic of a sound uttered by a user, wherein the characteristic includes at least a direction the user is facing when uttering the sound; ceasing display of the image on the surface; and causing display of the image on a different surface.
14. A system comprising: one or more processors; and computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: causing display of an image on a surface; determining a characteristic of a sound uttered by a user, wherein the characteristic includes at least a direction the user is facing when uttering the sound; ceasing display of the image on the surface; and causing display of the image on a different surface. 17. A system as recited in claim 14 , the acts further comprising: performing speech recognition on an audio signal generated from the sound uttered by the user to determine a command; and determining a parameter to control execution of the command based at least in part on the determined characteristic of the sound uttered by the user, the characteristic further includes one of a volume, a pitch, or a location of the user when uttering the sound; and modifying display of the image by performing an action associated with the determined command and performing the action in accordance with the determined parameter.