1. A computing device comprising: a processor; and memory having stored thereon instructions executable by the processor to cause the computing device to perform functions comprising: causing a first playback device in a first playback zone to play a first audio signal; receiving data indicating a second audio signal detected by a microphone, wherein the second audio signal comprises a portion corresponding to the first audio signal played by the first playback device; based on (i) the second audio signal, (ii) a characteristic of the microphone, and (iii) a characteristic of the first playback device, determining a particular acoustic characteristic of the first playback zone by removing the characteristics of the microphone and the characteristic of first playback device from the second audio signal; based on the particular acoustic characteristic and a predetermined audio characteristic, determining an audio processing algorithm, wherein application of the determined audio processing algorithm to a second playback zone modifies playback of audio content by a second playback device in the second playback zone to have the predetermined audio characteristic, wherein the second playback zone was determined to have the particular acoustic characteristic; and causing to be stored in a database, an association between the determined audio processing algorithm and the particular acoustic characteristic of the first playback zone.