公开(公告)号：US12302057B1

公开(公告)日：2025-05-13

申请号：US17855132

申请日：2022-06-30

Applicant: Apple Inc.

Inventor： Hanchi Chen ,  Martin Kuster ,  Tom-Davy W. Saux ,  Victoria Chiu

IPC: H04R1/10 ,  G10K11/178

Abstract: Disclosed are systems and methods for adaptive noise cancellation (ANC) at a virtual microphone located at the eardrum of a wearer of an earphone. The techniques estimate the level of leakiness of ambient noise in the earphone from the magnitude of the gain of the transfer function of the feed forward loop filter of the ANC. Based on the estimated leakiness, the techniques estimate the transfer function of the feed forward loop filter to compensate for the difference in the effect of noise cancellation at the virtual microphone and error microphone. A bias term that represents the difference in the frequency response of the attenuated noise at the virtual and error microphone may be added to the adaptive feed forward algorithm. The ANC operation may apply the bias term to the adaptive feed forward loop filter to reduce the ambient noise at the eardrum rather than at the error microphone.

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：US12219315B2

公开(公告)日：2025-02-04

申请号：US18346152

申请日：2023-06-30

Applicant: Apple Inc.

Inventor： Esge B. Andersen ,  Andrew E. Greenwood ,  Tom-Davy W. Saux ,  Baptiste P. Paquier ,  Hanchi Chen ,  Raghavendra S. Prabhu

IPC: H04R25/00 ,  H04R1/10 ,  H04R3/04

Abstract: A method performed by an in-ear headphone. Coupled to the in-ear headphone is a first ear tip that is inserted into an ear canal of a user. The method obtains an audio signal from an audio source device paired with the in-ear headphone and uses the signal to drive a speaker of the headphone to output a sound into the ear canal. The method obtains a microphone signal that is responsive to the outputted sound. The method notifies the user to replace the first ear tip with a second ear tip in response to a parameter associated with the microphone signal being less than a threshold.

公开(公告)号：US20230269509A1

公开(公告)日：2023-08-24

申请号：US17895025

申请日：2022-08-24

Applicant: APPLE INC.

Inventor： Benjamin A. Cousins ,  Robert Chun ,  Priyanka Venkatesh ,  Thanh P. Hua ,  Jarrett Lagler ,  Hanchi Chen

IPC: H04R1/10

CPC classification number: H04R1/1016 ,  H04R1/1058 ,  H04R2420/07

Abstract: A deformable ear tip comprising: an annular inner ear tip body having a sidewall extending between first and second opposing ends thereby defining a sound channel through the ear tip; an annular outer flange integrally formed with and surrounding the first end of the inner ear tip body and extending towards the inner ear tip second end forming an air gap between the annular inner ear tip body and the annular outer flange along a portion of a length of the ear tip, wherein the outer flange comprises a first material having a first durometer and is sized and shaped to be inserted into a human ear canal; and an inner flange integrally formed with the inner ear tip body and comprising a second material having a second durometer less than the first durometer, the inner flange body extending from a location along the inner ear tip body between the first and second ends towards an inner surface of the outer flange body.

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

IPC: H04R3/04 ,  H04R3/00 ,  H04R5/033 ,  G10L21/0224 ,  H04R29/00 ,  H04R1/10 ,  H04R5/04

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.

公开(公告)号：US12244990B2

公开(公告)日：2025-03-04

申请号：US17901754

申请日：2022-09-01

Applicant: Apple Inc.

Inventor： Thanh P. Hua ,  Priyanka Venkatesh ,  Jarrett B. Lagler ,  Jason J. LeBlanc ,  Hanchi Chen

IPC: H04R1/28 ,  H04R1/10

Abstract: An in-ear electronic device comprising: an enclosure that defines an enclosed space surrounding a microphone and an acoustic opening to an ambient environment surrounding the enclosure; an acoustic pathway having a first end that opens to the acoustic opening and a second end that opens to the microphone; and a protective membrane positioned between the second end of the acoustic channel and the microphone.

公开(公告)号：US12112738B2

公开(公告)日：2024-10-08

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 ,  G10K2210/3028 ,  H04R2201/10

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：US20240040297A1

公开(公告)日：2024-02-01

申请号：US18346152

申请日：2023-06-30

Applicant: Apple Inc.

Inventor： Esge B. Andersen ,  Andrew E. Greenwood ,  Tom-Davy W. Saux ,  Baptiste P. Paquier ,  Hanchi Chen ,  Raghavendra S. Prabhu

IPC: H04R1/10 ,  H04R3/04

CPC classification number: H04R1/1016 ,  H04R1/1041 ,  H04R3/04

Abstract: A method performed by an in-ear headphone. Coupled to the in-ear headphone is a first ear tip that is inserted into an ear canal of a user. The method obtains an audio signal from an audio source device paired with the in-ear headphone and uses the signal to drive a speaker of the headphone to output a sound into the ear canal. The method obtains a microphone signal that is responsive to the outputted sound. The method notifies the user to replace the first ear tip with a second ear tip in response to a parameter associated with the microphone signal being less than a threshold.

公开(公告)号：US11335316B2

公开(公告)日：2022-05-17

申请号：US17022960

申请日：2020-09-16

Applicant: Apple Inc.

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

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

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：US20220084494A1

公开(公告)日：2022-03-17

申请号：US17022954

申请日：2020-09-16

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.