公开(公告)号：US11626097B2

公开(公告)日：2023-04-11

申请号：US17063656

申请日：2020-10-05

申请人： Google LLC

发明人： Wensen Liu ,  Govind Kannan ,  Jayvon Timmons ,  Trausti Thormundsson

IPC分类号： G10K11/178 ,  G10H1/00

摘要： Systems and methods for audio listening devices, comprise a speaker coupled to a first housing, a sound port having a first end and a second end, wherein the first end is coupled to the first housing, and the second end is configured to be inserted in an ear canal of a person such that sound waves emitted from the speaker propagates via a secondary path to the ear canal through the sound port, active noise cancellation (ANC) components configured to generate anti-noise signals through the micro-speakers to cancel external noise, and a first microphone disposed within the sound port at the second end of the sound port such that the first microphone is configured to detect the anti-noise signal that propagates through the sound port via the secondary path and the external noise that propagates via a primary path.

公开(公告)号：US11386881B2

公开(公告)日：2022-07-12

申请号：US17098270

申请日：2020-11-13

申请人： Google LLC

发明人： Govind Kannan ,  Trausti Thormundsson ,  Jayvon Timmons ,  Wensen Liu

IPC分类号： G10K11/178

摘要： Active noise cancellation systems and methods include a feedforward path configured to receive a reference signal comprising ambient noise and adaptively generate an anti-noise signal to cancel the ambient noise and comprising an adaptive gain component configured to adaptively adjust a gain of the anti-noise signal, and a logic device configured to determine a leakage profile based on the adaptive gain component. The feedforward path includes a feedforward adaptive filter tuned to generate the anti-noise signal corresponding to the reference signal in accordance with the determined leakage profile. The leakage profile is selected from a plurality of stored leakage profiles that are tuned for a corresponding gain, and which corresponds to an ear coupling condition associated with a fit between the active noise cancellation system and a user. An adaptive transparency filter receives the reference signal and generates an ambient inclusion signal for output to a user.

公开(公告)号：US20230317049A1

公开(公告)日：2023-10-05

申请号：US18129249

申请日：2023-03-31

申请人： Google LLC

发明人： Wensen Liu ,  Govind Kannan ,  Jayvon Timmons ,  Trausti Thormundsson

IPC分类号： G10K11/178 ,  G10H1/00

CPC分类号： G10K11/1785 ,  G10H1/0066 ,  G10K2210/505 ,  G10K2210/1081 ,  G10K2210/1053

摘要： Systems and methods for audio listening devices, comprise a speaker coupled to a first housing, a sound port having a first end and a second end, wherein the first end is coupled to the first housing, and the second end is configured to be inserted in an ear canal of a person such that sound waves emitted from the speaker propagates via a secondary path to the ear canal through the sound port, active noise cancellation (ANC) components configured to generate anti-noise signals through the micro-speakers to cancel external noise, and a first microphone disposed within the sound port at the second end of the sound port such that the first microphone is configured to detect the anti-noise signal that propagates through the sound port via the secondary path and the external noise that propagates via a primary path.

公开(公告)号：US11978429B2

公开(公告)日：2024-05-07

申请号：US18129249

申请日：2023-03-31

申请人： Google LLC

发明人： Wensen Liu ,  Govind Kannan ,  Jayvon Timmons ,  Trausti Thormundsson

IPC分类号： G10K11/178 ,  G10H1/00

CPC分类号： G10K11/1785 ,  G10H1/0066 ,  G10K2210/1053 ,  G10K2210/1081 ,  G10K2210/505

摘要： Systems and methods for audio listening devices, comprise a speaker coupled to a first housing, a sound port having a first end and a second end, wherein the first end is coupled to the first housing, and the second end is configured to be inserted in an ear canal of a person such that sound waves emitted from the speaker propagates via a secondary path to the ear canal through the sound port, active noise cancellation (ANC) components configured to generate anti-noise signals through the micro-speakers to cancel external noise, and a first microphone disposed within the sound port at the second end of the sound port such that the first microphone is configured to detect the anti-noise signal that propagates through the sound port via the secondary path and the external noise that propagates via a primary path.

公开(公告)号：US11026034B2

公开(公告)日：2021-06-01

申请号：US16664728

申请日：2019-10-25

申请人： Google LLC

发明人： Govind Kannan ,  Wensen Liu ,  Jayvon Timmons

IPC分类号： H04R3/04 ,  H04R29/00 ,  H04R1/10

摘要： A self-calibration system may include a housing including a first calibration circuit configured to coordinate with a second calibration circuit to execute a calibration sequence for an active noise cancelling (ANC) earphone. The housing further includes a cavity configured to accommodate the ANC earphone, wherein the cavity is contoured to simulate the ANC earphone in a user's ear. The housing further includes a calibration microphone coupled with the first calibration circuit and configured to measure calibration sound waves from the ANC earphone, and a calibration speaker configured to emit calibration sound waves to the ANC earphone.