Patent ID: 9693165
Date: 2017-06-27
CPC Classifications: G06F,G10L,H03G,H04R,H04S

Claim:
1. A tangible, non-transitory computer-readable medium having stored therein instructions executable by one or more processors to cause a control device to perform operations comprising: receiving an indication that one or more playback devices are emitting a calibration sound in a given environment during a calibration period; recording the emitted calibration sound and receiving motion data indicating movement of the control device during emission of the calibration sound; identifying a first component of the motion data that indicates movement of the control device in a vertical direction and one or more second components of the motion data that indicates movement of the control device in respective radial directions from the one or more playback devices; determining one or more horizontal motion parameters representing motion of the control device in a horizontal direction through the environment by cross-correlating the first component of the motion data indicating movement of the control device in a vertical direction with the one or more second components of the motion data indicating movement of the control device in respective radial directions from the one or more playback devices; determining that sufficient horizontal translation of the control device occurred during the calibration period by determining that at least one of the horizontal motion parameters representing motion in the horizontal direction through the environment exceeds a correlation threshold; and sending a message indicating that sufficient translation of the control device occurred during the calibration period.