In an example implementation of the disclosed technology, a method includes setting a command entry timer based on a predetermined command entry threshold. The method also includes receiving an indication of user input to prompt receipt of an audio command and, responsive to determining that the command entry timer has expired since receiving the indication of user input, outputting, for display, at least one indicator associated with at least one supported audio command that is associated with at least one function of the computing device. The method also includes receiving a plurality of audio input samples and updating the command entry threshold based on plurality of audio input samples.