7. A system comprising: one or more microphones for receiving sound from within an environment and for generating corresponding audio signals; 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: determining, based on the generated audio signals, at least one of a decrease or an increase in a volume level of the sound, wherein the increase in the volume level is associated with a first action and the decrease in the volume level is associated with a second action that is opposite the first action; and performing the first action or the second action within the environment based at least in part on the determined decrease or increase in the volume level of the sound.
7. A system comprising: one or more microphones for receiving sound from within an environment and for generating corresponding audio signals; 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: determining, based on the generated audio signals, at least one of a decrease or an increase in a volume level of the sound, wherein the increase in the volume level is associated with a first action and the decrease in the volume level is associated with a second action that is opposite the first action; and performing the first action or the second action within the environment based at least in part on the determined decrease or increase in the volume level of the sound. 8. A system as recited in claim 7 , the acts further comprising determining an execution parameter based at least in part on the determined decrease or increase in the volume level of the sound such that the execution parameter describes how the command is to be executed.