公开(公告)号：EP3800902A1

公开(公告)日：2021-04-07

申请号：EP20199605.5

申请日：2015-09-29

Applicant: Apple Inc.

Inventor： PO, Bruce C. ,  POWELL, Richard M ,  LINDAHL, Aram M ,  PAQUIER, Baptiste P ,  KAMP, Phillip A

IPC: H04S7/00 ,  H04R5/04 ,  H04R29/00

Abstract: A system and method is described for determining whether a loudspeaker device has relocated, tilted, rotated, or changed environment such that one or more parameters for driving the loudspeaker may be modified and/or a complete reconfiguration of the loudspeaker system may be performed. In one embodiment, the system may include a set of sensors. The sensors provide readings that are analyzed to determine 1) whether the loudspeaker has moved since a previous analysis and/or 2) a distance of movement and/or a degree change in orientation of the loudspeaker since the previous analysis. Upon determining the level of movement is below a threshold value, the system adjusts previous parameters used to drive one or more of the loudspeakers. By adjusting previous parameters instead of performing a complete recalibration, the system provides a more efficient technique for ensuring that the loudspeakers continue to produce accurate sound for the listener.