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：WO2014186106A1

公开(公告)日：2014-11-20

申请号：PCT/US2014/035311

申请日：2014-04-24

Applicant: APPLE INC.

Inventor： GOLDSTEIN, Andre L. ,  BAJIC, Vladan

IPC: H04R3/04 ,  G10K11/178 ,  H04R1/10

CPC classification number: H03G5/165 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3055 ,  G10K2210/51 ,  H04R1/1083 ,  H04R3/04 ,  H04R2410/05 ,  H04R2499/11

Abstract: An audio processor has an active noise cancellation (ANC) processor to compute an S-filter, which estimates a transfer function from an earpiece speaker, that is to be worn by a user, to an error microphone. The ANC processor adaptively produces an anti noise signal for reducing ambient noise that can be heard by the user. An adaptive equalization (EQ) processor has an EQ filter controller that adjusts an EQ filter, while audio user content is being filtered in accordance with the EQ filter before being fed to the speaker and then heard by the user. Other embodiments are also described and claimed.

Abstract translation: 音频处理器具有主动噪声消除（ANC）处理器，用于计算S滤波器，S滤波器估计要由用户佩戴的耳机扬声器的传递函数到误差麦克风。 ANC处理器自适应地产生用于减少用户可以听到的环境噪声的抗噪声信号。 自适应均衡（EQ）处理器具有调节EQ滤波器的EQ滤波器控制器，而音频用户内容在馈送到扬声器之前根据EQ滤波器被滤波，然后被用户听到。 还描述和要求保护其他实施例。

公开(公告)号：EP3745736A1

公开(公告)日：2020-12-02

申请号：EP20175819.0

申请日：2020-05-20

Applicant: Apple Inc.

Inventor： WOODRUFF, John ,  SAUX, Tom-Davy W. ,  BAJIC, Vladan ,  IYENGAR, Vasu ,  GREENWOOD, Andrew E. ,  CHEN, Tyrone T. ,  MAZUR, Jakub ,  VERMA, Tony S.

IPC: H04R1/10 ,  G10K11/175 ,  A61F11/06

Abstract: An audio system has an ambient sound enhancement function, in which an against-the-ear audio device having a speaker converts a digitally processed version of an input audio signal into sound. The audio system also has an acoustic noise cancellation (ANC) function that may be combined in various ways with the sound enhancement function, and that may be responsive to voice activity detection. Other aspects are also described and claimed.