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1.发明申请公开(公告)号：US20210099799A1
公开(公告)日：2021-04-01
申请号：US17019778
申请日：2020-09-14
Applicant: Apple Inc.
Inventor： Tom-Davy W. Saux , Brian D. Clark , Hanchi Chen , Victoria Chiu , Vladan Bajic , Dana Massie , Andrew P. Bright , Thomas M. Jensen
Abstract: A method for audio signal processing of microphone signals of a headphone. An audio signal from a first microphone of a headphone is filtered by an ANC system to produce a first filtered signal. Dynamic range control is performed upon the first filtered signal to produce a first dynamic range adjusted signal that drives a speaker of the headphone. Other aspects are also described and claimed.
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2.发明授权公开(公告)号：US11166099B2
公开(公告)日：2021-11-02
申请号：US17019778
申请日：2020-09-14
Applicant: Apple Inc.
Inventor： Tom-Davy W. Saux , Brian D. Clark , Hanchi Chen , Victoria Chiu , Vladan Bajic , Dana Massie , Andrew P. Bright , Thomas M. Jensen
Abstract: A method for audio signal processing of microphone signals of a headphone. An audio signal from a first microphone of a headphone is filtered by an ANC system to produce a first filtered signal. Dynamic range control is performed upon the first filtered signal to produce a first dynamic range adjusted signal that drives a speaker of the headphone. Other aspects are also described and claimed.
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公开(公告)号：US09681228B2
公开(公告)日：2017-06-13
申请号：US14679807
申请日：2015-04-06
Applicant: Apple Inc.
Inventor： Christopher Wilk , Alexander V. Salvatti , Thomas M. Jensen , Scott P. Porter , Ruchir M. Dave , Andrew P. Bright , Roderick B. Hogan
CPC classification number: H04R3/007 , H04R9/06 , H04R2499/11
Abstract: A micro speaker having a capacitive sensor to sense a motion of a speaker diaphragm, is disclosed. More particularly, embodiments of the micro speaker include a conductive surface of a diaphragm facing conductive surfaces of several capacitive plate sections across a gap. The diaphragm may be configured to emit sound forward away from a magnet of the micro speaker, and the capacitive plate sections may be supported on the magnet behind the diaphragm. In an embodiment, the gap provides an available travel for the diaphragm, which may be only a few millimeters. A sensing circuit may sense capacitances of the conductive surfaces to limit displacement of the diaphragm to within the available travel.
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4.发明授权公开(公告)号：US09082389B2
公开(公告)日：2015-07-14
申请号：US13629279
申请日：2012-09-27
Applicant: Apple Inc.
Inventor： Guy C. Nicholson , Thomas M. Jensen
IPC: G10K11/16 , G10K11/178
CPC classification number: G10K11/1782 , G10K11/178 , G10K2210/1081 , G10K2210/3028
Abstract: A feed forward active noise cancellation (ANC) system for use in a portable audio device has an adaptive digital filter and a reference microphone. A non-adaptive pre-shaping digital filter has an input coupled to the reference microphone and is in series with, and in front of, the adaptive filter. The pre-shaping filter is minimum phase and presents at least 2 dB more gain over a low audio frequency band than over a high audio frequency band. This may help compensate for low frequency band difficulties, and may thereby extend ANC bandwidth at the low end without a worsening impact on the high end. Other embodiments are also described and claimed.
Abstract translation: 用于便携式音频设备的前馈有源噪声消除（ANC）系统具有自适应数字滤波器和参考麦克风。 非自适应预整形数字滤波器具有耦合到参考麦克风并与自适应滤波器串联并在其前面的输入。 预成形滤波器是最小相位，并且在低音频频带上比在高音频频带上具有至少2dB的增益。 这可能有助于补偿低频带的困难，从而可以在低端扩展ANC带宽，而不会对高端产生恶化的影响。 还描述和要求保护其他实施例。
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公开(公告)号：US11361745B2
公开(公告)日：2022-06-14
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.
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Patent Agency Ranking
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.
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公开(公告)号：US09942676B1
公开(公告)日：2018-04-10
申请号：US14820354
申请日：2015-08-06
Applicant: Apple Inc.
Inventor： Thomas M. Jensen , David T. Yeh
IPC: H04R29/00
CPC classification number: H04R29/001 , H04R3/007 , H04R29/003
Abstract: Method of throttling a pilot tone for thermal monitoring of an electro-mechanical actuator starts by computing a power estimate based on a driving signal. A first temperature estimate is then computed based on the power estimate. The pilot tone may be generated by adjusting a level of the pilot tone based on at least one of the power estimate or the first temperature estimate. The pilot tone is injected into the driving signal to generate a driving output signal that is outputted by an electro-mechanical actuator. Other embodiments are also described.
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8.发明申请公开(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。
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公开(公告)号：US12185067B2
公开(公告)日：2024-12-31
申请号：US17750271
申请日：2022-05-20
Applicant: Apple Inc.
Inventor： Thomas M. Jensen , Andrew P. Bright , Ariel A. Massias , Ethan R. Duni , Hannes Breitschaedel , Max Rasmussen
Abstract: Aspects of the subject technology relate to electronic devices having speakers. An electronic device may include speaker control circuitry for a speaker. The speaker control circuitry may include multiple parallel prediction blocks that share a single look-ahead delay, and that feed, in parallel, a single controller. The single controller can generate a joint modification to an audio signal based on the parallel outputs of the prediction blocks. The joint modification can then be applied to the audio signal to generate a speaker-protection audio signal that can be output by the speaker. The speaker control circuitry may also include a system modeler that models the speaker system of the electronic device based on feedback measured physical characteristics. In this way, a reduced control safety margin can be achieved by more accurate model predictors, which can allow the controller to safely drive the speaker system to its full capability.
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10.发明授权公开(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。
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