公开(公告)号：WO2015034610A1

公开(公告)日：2015-03-12

申请号：PCT/US2014/049492

申请日：2014-08-01

Applicant: APPLE INC.

Inventor： PO, Bruce C. ,  BAJIC, Vladan

IPC: G10K11/178

CPC classification number: G10K11/175 ,  G10K11/178 ,  G10K11/1783 ,  G10K11/17854 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3056

Abstract: An anti-noise signal is produced in accordance with an active noise cancellation process (ANC), at an input of a speaker so as to control how much background noise a user can hear. Strength of the anti-noise signal is adjusted gradually, rather than abruptly, in proportion to decreasing or increasing sound pressure level (SPL) of the background noise, during inactivation or activation of the ANC process. Other embodiments are also described and claimed.

Abstract translation: 在扬声器的输入端，根据有源噪声消除处理（ANC）产生抗噪声信号，以便控制用户可以听到多少背景噪声。 在ANC过程的失活或激活期间，抗噪声信号的强度逐渐调整而不是突然地与背景噪声的声压级（SPL）的降低或增加成比例。 还描述和要求保护其他实施例。

公开(公告)号：EP3202162B1

公开(公告)日：2020-11-25

申请号：EP15781812.1

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

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.