公开(公告)号：US20210097970A1

公开(公告)日：2021-04-01

申请号：US17019774

申请日：2020-09-14

Applicant: Apple Inc.

Inventor： Tom-Davy W. Saux ,  Brian D. Clark ,  Thomas M. Jensen ,  Vladan Bajic

IPC: G10K11/178 ,  H04R1/10 ,  H04R1/40 ,  H04R3/00

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

公开(公告)号：US10341759B2

公开(公告)日：2019-07-02

申请号：US15607051

申请日：2017-05-26

Applicant: Apple Inc.

Inventor： Sorin V. Dusan ,  Tom-Davy W. Saux ,  Vladan Bajic

IPC: G10L21/0208 ,  G10L21/0216 ,  H04R1/10 ,  G10K11/178

Abstract: Method of wind and noise reduction for headphones starts by receiving acoustic signals from first external microphone included on the outside of earcup's housing. Acoustic signals are received from internal microphone included inside earcup's housing. ANC downlink corrector processes downlink signal to generate echo estimate of speaker signal. First summator removes echo estimate of speaker signal from acoustic signals from internal microphone to generate corrected internal microphone signal. Spectral combiner performs spectral mixing of corrected internal microphone signal with acoustic signals from first external microphone to generate mixed signal. Lower frequency portion of mixed signal includes corresponding lower frequency portion of corrected internal microphone signal, and higher frequency portion of mixed signal includes corresponding higher frequency portion of acoustic signals from first external microphone. Other embodiments are also described.

公开(公告)号：US20140086425A1

公开(公告)日：2014-03-27

申请号：US14035662

申请日：2013-09-24

Applicant: Apple Inc.

Inventor： Thomas M. Jensen ,  Vladan Bajic ,  Andrew P. Bright

IPC: G10K11/16

CPC classification number: G10K11/16 ,  G10K11/17854 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3018 ,  G10K2210/3056

Abstract: In one aspect, multiple adaptive W filters and associated adaptive filter controllers are provided that use multiple reference microphone signals to produce multiple, “component” anti-noise signals. These are gain weighted and summed to produce a single anti-noise signal, which drives an earpiece speaker. The weighting changes based on computed measures of the coherence between content in each reference signal and content in an error signal. Other embodiments are also described and claimed.

Abstract translation: 在一个方面，提供了多个自适应W滤波器和相关联的自适应滤波器控制器，其使用多个参考麦克风信号来产生多个“分量”抗噪声信号。 这些是增益加权和相加以产生单个抗噪声信号，其驱动耳机扬声器。 基于每个参考信号中的内容与误差信号中的内容之间的相干性的计算测量值，加权变化。 还描述和要求保护其他实施例。

公开(公告)号：US20240361975A1

公开(公告)日：2024-10-31

申请号：US18605390

申请日：2024-03-14

Applicant: Apple Inc.

Inventor： Mary-Ann Rau ,  Reza Azimi ,  Kevin Durfee ,  Aaron A. Jaech ,  Wasifa Jamal ,  Viet Huy Le ,  Timothy S. Paek ,  Pablo D. Brazell ,  Blanca Isabel C. Villanueva ,  Lucas O. Winstrom ,  Chirag Nanavati ,  Sanket S. Dave ,  Deepak Iyer ,  Hilary K. Mogul ,  Edward T. Davies ,  Vladan Bajic ,  Jianjun He

IPC: G06F3/16 ,  H04R1/10

CPC classification number: G06F3/165 ,  H04R1/10

Abstract: A method that includes playing back audio content through a speaker of the headset at a volume setting; receiving a microphone signal that includes noise of an acoustic environment captured by a microphone of the headset; detecting a change to an environmental noise level of the noise based on the microphone signal; retrieving, from memory of the headset, an adapted volume setting to the changed environmental noise level, wherein the adapted volume setting is generated at least in part based on user context or user behavior; and adjusting playback of the audio content by transitioning the volume setting to the adapted volume setting.

公开(公告)号：US20240046913A1

公开(公告)日：2024-02-08

申请号：US18450942

申请日：2023-08-16

Applicant: Apple Inc.

Inventor： Hanchi Chen ,  Sarthak Khanal ,  Yang Lu ,  Vladan Bajic ,  Esge B. Andersen

IPC: G10K11/178 ,  H04R3/00

CPC classification number: G10K11/17881 ,  G10K11/17854 ,  H04R3/005 ,  H04R2201/10 ,  G10K2210/3028

Abstract: An ear cup housing has several reference microphones, an error microphone and a speaker. A processor drives the speaker for acoustic noise cancellation and transparency, by processing the microphone signals, and performs an oversight process by adjusting the reference microphone signals in response to detecting wind noise events and scratch events. In another aspect, the ear cup housing has an outside face that is joined to an inside face by a perimeter and the reference microphones are on the perimeter. Other aspects are also described and claimed.

公开(公告)号：US20180343514A1

公开(公告)日：2018-11-29

申请号：US15607051

申请日：2017-05-26

Applicant: Apple Inc.

Inventor： Sorin V. Dusan ,  Tom-Davy W. Saux ,  Vladan Bajic

IPC: H04R1/10 ,  G10K11/178 ,  G10L21/0208

CPC classification number: H04R1/1083 ,  G10K11/178 ,  G10K2210/1081 ,  G10L21/0208 ,  G10L2021/02082 ,  H04R1/1008 ,  H04R5/033 ,  H04R2410/05 ,  H04R2410/07

Abstract: Method of wind and noise reduction for headphones starts by receiving acoustic signals from first external microphone included on the outside of earcup's housing. Acoustic signals are received from internal microphone included inside earcup's housing. ANC downlink corrector processes downlink signal to generate echo estimate of speaker signal. First summator removes echo estimate of speaker signal from acoustic signals from internal microphone to generate corrected internal microphone signal. Spectral combiner performs spectral mixing of corrected internal microphone signal with acoustic signals from first external microphone to generate mixed signal. Lower frequency portion of mixed signal includes corresponding lower frequency portion of corrected internal microphone signal, and higher frequency portion of mixed signal includes corresponding higher frequency portion of acoustic signals from first external microphone. Other embodiments are also described.

公开(公告)号：US09607602B2

公开(公告)日：2017-03-28

申请号：US14304731

申请日：2014-06-13

Applicant: Apple Inc.

Inventor： Bruce C. Po ,  Vladan Bajic

IPC: G10K11/16 ,  G10K11/175 ,  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.

公开(公告)号：US09330652B2

公开(公告)日：2016-05-03

申请号：US14035662

申请日：2013-09-24

Applicant: Apple Inc.

Inventor： Thomas M. Jensen ,  Vladan Bajic ,  Andrew P. Bright

IPC: G10K11/16 ,  G10K11/178

CPC classification number: G10K11/16 ,  G10K11/17854 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3018 ,  G10K2210/3056

Abstract: In one aspect, multiple adaptive W filters and associated adaptive filter controllers are provided that use multiple reference microphone signals to produce multiple, “component” anti-noise signals. These are gain weighted and summed to produce a single anti-noise signal, which drives an earpiece speaker. The weighting changes based on computed measures of the coherence between content in each reference signal and content in an error signal. Other embodiments are also described and claimed.

Abstract translation: 在一个方面，提供了多个自适应W滤波器和相关联的自适应滤波器控制器，其使用多个参考麦克风信号来产生多个“分量”抗噪声信号。 这些是增益加权和相加以产生单个抗噪声信号，其驱动耳机扬声器。 基于每个参考信号中的内容与误差信号中的内容之间的相干性的计算测量值，加权变化。 还描述和要求保护其他实施例。

公开(公告)号：US09129586B2

公开(公告)日：2015-09-08

申请号：US13709919

申请日：2012-12-10

Applicant: Apple Inc.

Inventor： Vladan Bajic ,  Thomas M. Jensen

IPC: G10K11/00 ,  G10K11/178

CPC classification number: G10K11/002 ,  G10K11/178 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/30231 ,  G10K2210/3028 ,  G10K2210/511

Abstract: An active noise control (ANC) processor has an adaptive filter that uses a reference signal to produce an anti-noise signal, and an error signal to evaluate cancellation performance. An adaptive filter algorithm engine configures the filter coefficients of the adaptive filter, in accordance with pre-shaped versions of the error and reference signals. The pre-shaping filter has a high-pass transfer function and enables the adaptive algorithm engine to increase noise cancellation performance in a high frequency band during the presence of focused or narrow-band noise energy in a low frequency band. Other embodiments are also described and claimed.

Abstract translation: 主动噪声控制（ANC）处理器具有使用参考信号产生抗噪声信号的自适应滤波器和用于评估取消性能的误差信号。 自适应滤波器算法引擎根据预先形状的错误和参考信号来配置自适应滤波器的滤波器系数。 预成形滤波器具有高通传递函数，并且使得自适应算法引擎在低频带中的聚焦或窄带噪声能量的存在期间增加高频带中的噪声消除性能。 还描述和要求保护其他实施例。

公开(公告)号：US20150071453A1

公开(公告)日：2015-03-12

申请号：US14304731

申请日：2014-06-13

Applicant: Apple Inc.

Inventor： Bruce C. Po ,  Vladan Bajic

IPC: G10K11/175

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。