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公开(公告)号：US11030989B2
公开(公告)日：2021-06-08
申请号：US15853645
申请日：2017-12-22
Applicant: SYNAPTICS INCORPORATED
IPC: G10K11/178 , H04R1/10
Abstract: An active noise cancellation system includes a sensor operable to sense environmental noise and generate a corresponding reference signal, a fixed noise cancellation filter including a predetermined model of the active noise cancellation system operable to generate an anti-noise signal, and a tunable noise cancellation filter operable to modify the anti-noise signal in accordance with stored coefficients, wherein the tunable noise cancellation filter is further operable to modify the stored coefficients in real-time based on user feedback and generate a tuned anti-noise signal that models tunable deviations from the predetermined noise model. A graphical user interface is operable to receive user adjustments of tunable parameters in real-time, the tunable parameters corresponding to at least one of the stored coefficients.
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公开(公告)号：US10701484B2
公开(公告)日：2020-06-30
申请号：US15933347
申请日：2018-03-22
Applicant: SYNAPTICS INCORPORATED
Inventor： Trausti Thormundsson , Govind Kannan , Harry Lau , Mark Edward Miller
Abstract: A system and a method provide for protecting a loudspeaker from thermal and/or mechanical failure by monitoring for over-temperature and over-power conditions. The system generates a first gain from a first speaker protection controller in response to a driving voltage and/or a driving current of a loudspeaker, and generates a second gain from a second speaker protection controller in response to the driving voltage and/or a driving current of the loudspeaker, if the temperature exceeds a thermal limit or if the power exceeds a maximum power. The system applies the second gain to an audio signal to lower the audio signal if the first speaker protection controller fails.
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公开(公告)号：US20210104217A1
公开(公告)日：2021-04-08
申请号：US17063656
申请日：2020-10-05
Applicant: SYNAPTICS INCORPORATED
Inventor： Wensen Liu , Govind Kannan , Jayvon Timmons , Trausti Thormundsson
IPC: G10K11/178 , G10H1/00
Abstract: 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.
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公开(公告)号：US10721562B1
公开(公告)日：2020-07-21
申请号：US16399961
申请日：2019-04-30
Applicant: SYNAPTICS INCORPORATED
Inventor： Liyang Rui , Govind Kannan
IPC: H04R3/00 , G10L21/02 , G10K11/16 , H04R3/04 , G10L25/06 , G10L21/0232 , G10L21/0264 , H04R5/04
Abstract: Systems and methods include a wind detector to receive audio input signals and output a wind detection flag including a single channel wind detection flag and a cross channel wind detection flag, each wind detection flag indicating a presence or absence of wind noise, and a fusion smoothing module to receive the plurality of wind detection flags and generate an output wind detection flag. Microphones generate the plurality of audio input signals. The wind detector and the fusion smoothing module may comprise program instructions stored in the memory for execution by a digital signal processor. The wind detector is a single channel detector to receive a single audio channel of the audio input signal and generate the single channel wind noise flag, and a cross-channel detector to compute auto correlations and a cross correlation between two or more audio channels.
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公开(公告)号：US20180279044A1
公开(公告)日：2018-09-27
申请号：US15933347
申请日：2018-03-22
Applicant: SYNAPTICS INCORPORATED
Inventor： Trausti Thormundsson , Govind Kannan , Harry Lau , Mark Edward Miller
Abstract: A system and a method provide for protecting a loudspeaker from thermal and/or mechanical failure by monitoring for over-temperature and over-power conditions. The system generates a first gain from a first speaker protection controller in response to a driving voltage and/or a driving current of a loudspeaker, and generates a second gain from a second speaker protection controller in response to the driving voltage and/or a driving current of the loudspeaker, if the temperature exceeds a thermal limit or if the power exceeds a maximum power. The system applies the second gain to an audio signal to lower the audio signal if the first speaker protection controller fails.
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Patent Agency Ranking
公开(公告)号：US11418878B1
公开(公告)日：2022-08-16
申请号：US17221599
申请日：2021-04-02
Applicant: SYNAPTICS INCORPORATED
Inventor： Wensen Liu , Govind Kannan
Abstract: An active noise cancellation system has a secondary path including a loudspeaker configured to output an anti-noise signal to cancel noise in a noise cancellation zone, and an error microphone configured to sense sound in the noise cancellation zone. The ANC system further includes a logic device configured to adaptively generate the anti-noise signal for playback through the loudspeaker based at least in part on a feedback signal from the error microphone and identify a user of the active noise cancellation system based, at least in part, on a measured frequency response of the secondary path. The logic device is further configured to identify the user of the active noise cancellation system through a comparison of the measured frequency response of the secondary path to stored models and may be configured to execute a new user enrollment process, store user profiles, and/or switch between in-ear and open-air states.
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公开(公告)号：US20210127221A1
公开(公告)日：2021-04-29
申请号：US16664728
申请日：2019-10-25
Applicant: SYNAPTICS INCORPORATED
Inventor： Govind Kannan , Wensen Liu , Jayvon Timmons
Abstract: 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.
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公开(公告)号：US10945058B2
公开(公告)日：2021-03-09
申请号：US16455617
申请日：2019-06-27
Applicant: SYNAPTICS INCORPORATED
Inventor： Wensen Liu , Govind Kannan
Abstract: Speaker performance may be improved by increasing the effective acoustic chamber volume by fluidically connecting a speaker chamber containing a speaker with a mechanical housing. Additionally, the performance of left and right speakers may be balanced. Such balancing may be through equalization of the left and right speakers, balancing the acoustic impedance through sizing the openings between the speaker chambers and mechanical housings, and/or balancing of acoustic volumes within the speakers through use of ballast or acoustic expansion material to increase or decrease the effective acoustic volume of one of the speakers.
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公开(公告)号：US10714073B1
公开(公告)日：2020-07-14
申请号：US16399980
申请日：2019-04-30
Applicant: SYNAPTICS INCORPORATED
Inventor： Liyang Rui , Govind Kannan
IPC: G10K11/178 , H04R1/10
Abstract: Active noise cancellation (ANC) systems and methods include a reference sensor to sense external noise and generate a reference signal, an error sensor to sense noise in a noise cancellation zone and generate an error signal, a feedforward ANC subsystem to receive the reference and error signals and generate a first anti-noise signal to cancel external noise in a noise cancellation zone, a feedback ANC subsystem to receive the error signal and generate a second anti-noise signal to cancel the external noise in the cancellation zone, a wind detector to detect whether wind noise is present in the reference signal and output a wind noise detection status, and wind handler to control adaptation processing of the feedforward ANC subsystem and the feedback ANC subsystem in accordance with the wind noise detection status and mixing of the first and second anti-noise signals to generate an output anti-noise signal.
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公开(公告)号：US20180182371A1
公开(公告)日：2018-06-28
申请号：US15853645
申请日：2017-12-22
Applicant: SYNAPTICS INCORPORATED
IPC: G10K11/178 , H04R1/10
CPC classification number: G10K11/17853 , G10K11/17815 , G10K11/17833 , G10K11/1787 , G10K11/17881 , G10K2210/1081 , G10K2210/3016 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3035 , G10K2210/3047 , G10K2210/504 , H04R1/1083 , H04R2460/01
Abstract: An active noise cancellation system includes a sensor operable to sense environmental noise and generate a corresponding reference signal, a fixed noise cancellation filter including a predetermined model of the active noise cancellation system operable to generate an anti-noise signal, and a tunable noise cancellation filter operable to modify the anti-noise signal in accordance with stored coefficients, wherein the tunable noise cancellation filter is further operable to modify the stored coefficients in real-time based on user feedback and generate a tuned anti-noise signal that models tunable deviations from the predetermined noise model. A graphical user interface is operable to receive user adjustments of tunable parameters in real-time, the tunable parameters corresponding to at least one of the stored coefficients.
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