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    Headphone with Multiple Reference Microphones ANC and Transparency
    3.
    发明申请
    Headphone with Multiple Reference Microphones ANC and Transparency 有权

    公开(公告)号：US20250104688A1

    公开(公告)日：2025-03-27

    申请号：US18905827

    申请日：2024-10-03

    Applicant: Apple Inc.

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

    IPC: G10K11/178 ,  H04R3/00

    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.

    Feedback acoustic noise cancellation tuning
    5.
    发明授权
    Feedback acoustic noise cancellation tuning 有权

    公开(公告)号：US11445290B1

    公开(公告)日：2022-09-13

    申请号：US17027258

    申请日：2020-09-21

    Applicant: Apple Inc.

    Inventor： Scott C. Grinker ,  Vladan Bajic ,  Brian D. Clark ,  Tom-Davy W. Saux ,  Hanchi Chen

    IPC: G10K11/178 ,  H04R1/10

    Abstract: A method performed by an in-ear headphone that includes a speaker and an internal microphone. The method receives a microphone signal from the internal microphone that indicates a current sound pressure level (SPL) in an ear canal of a user. The current SPL is a result of a control leak from the in-ear headphone into an ambient environment that reduces a SPL in the ear canal between 2 dB and 25 dB at a frequency within a frequency range than if otherwise not present. The method determines an active noise cancellation (ANC) filter based on the microphone signal and generates an anti-noise signal using the ANC filter. The method drives the speaker using the anti-noise signal to reduce the current SPL in the ear canal of the user as much as 25 dB at a frequency within the frequency range.

    Method and system for adaptive audio filters for different headset cushions
    6.
    发明授权
    Method and system for adaptive audio filters for different headset cushions 有权

    公开(公告)号：US11303258B1

    公开(公告)日：2022-04-12

    申请号：US17023275

    申请日：2020-09-16

    Applicant: Apple Inc.

    Inventor： Vladan Bajic ,  Jarrett B. Lagler ,  Esge B. Andersen ,  Daniel S. Phillips

    IPC: H04R1/10 ,  H04R3/00 ,  G10K11/178 ,  H03G5/16 ,  H04R3/02

    Abstract: A method performed by an audio system that includes a headset. The method identifies a cushion that is coupled to a headset housing of the headset in which a speaker is integrated therein, produces a reference microphone signal from a reference microphone of the headset, selects an active noise cancellation (ANC) filter based on the identified cushion, filters the reference microphone signal with the ANC filter to produce an anti-noise signal, drives the speaker with the anti-noise signal, in response to driving the speaker, produces an error microphone signal from an error microphone of the headset, and performs an adaptive ANC function to adapt the ANC filter based on the reference microphone signal and the error microphone signal.

    Adaptive audio equalization for personal listening devices
    8.
    发明授权
    Adaptive audio equalization for personal listening devices 有权
    用于个人聆听设备的自适应音频均衡

    公开(公告)号：US09515629B2

    公开(公告)日：2016-12-06

    申请号：US13896164

    申请日：2013-05-16

    Applicant: Apple Inc.

    Inventor： Andre L. Goldstein ,  Vladan Bajic

    IPC: A61F11/06 ,  H03G5/16 ,  H04R1/10 ,  H04R3/04 ,  G10K11/178

    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。

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