Systems and methods for calibrating speakers

A portable device for calibrating speakers for a particular environment, the portable device comprising:

• a microphone;
• a processor;
• and
• a non-transitory memory storing instructions that when executed by the processor of the portable device cause the portable device to perform operations comprising:
• providing instructions for positioning the microphone of the portable device at a location in an environment;
• initiating first playback by an audio source of a first piece of audio content over a first speaker;
• initiating second playback by the audio source of a second piece of audio content over a second speaker, wherein the first piece of audio content is different from the second piece of audio content, and in which first playback of the first piece of audio content over the first speaker overlaps, at least in part, with second playback of the second piece of audio content over the second speaker;
• detecting first playback of the first piece of audio content over the first speaker using the microphone;
• providing instructions for positioning the microphone of the portable device at another location in the environment;
• initiating third playback of a third piece of audio content;
• detecting third playback of the third piece of audio content from the first speaker using the microphone;
• based at least in part on the detected first playback of the first piece of audio content and the detected third playback of the third piece of audio content, determining one or more adjustments to be applied to additional audio content before additional audio content playback by the first speaker, wherein determining the one or more adjustments includes:
• accessing a system information file of the portable device to determine a transfer function of the microphone, and
• determining the one or more adjustments using the transfer function of the microphone;
• and
• applying the one or more adjustments to the additional audio content before it is played by the first speaker.

A non-transitory memory storing instructions that when executed by a processor of a portable device with a microphone cause the portable device to perform operations comprising:

• providing instructions for positioning the microphone of the portable device at a location in an environment;
• initiating first playback by an audio source of a first piece of audio content over a first speaker;
• initiating second playback by the audio source of a second piece of audio content over a second speaker, wherein the first piece of audio content is different from the second piece of audio content, and in which first playback of the first piece of audio content over the first speaker overlaps, at least in part, with second playback of the second piece of audio content over the second speaker;
• detecting first playback of the first piece of audio content over the first speaker using the microphone;
• providing instructions for positioning the microphone of the portable device at another location in the environment;
• initiating third playback of a third piece of audio content;
• detecting third playback of the third piece of audio content from the first speaker using the microphone;
• based at least in part on the detected first playback of the first piece of audio content and the detected third playback of the third piece of audio content, determining one or more adjustments to be applied to additional audio content before additional audio content playback by the first speaker, wherein determining the one or more adjustments includes:
• accessing a system information file of the portable device to determine a transfer function of the microphone, and
• determining the one or more adjustments using the transfer function of the microphone;
• and
• applying the one or more adjustments to the additional audio content before it is played by the first speaker.