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公开(公告)号：US11245984B1
公开(公告)日：2022-02-08
申请号：US16945388
申请日：2020-07-31
Applicant: Facebook Technologies, LLC
IPC: H04R3/04 , H04R5/033 , H04R5/04 , H04R1/10 , H04S7/00 , G06F3/01 , G02B27/01 , G06T19/00 , H04S1/00
Abstract: A system for presenting audio content to a user. The system comprises one or more microphones coupled to a frame of a headset. The one or more microphones capture sound from a local area. The system further comprises an audio controller integrated into the headset and communicatively coupled to an in-ear device worn by a user. The audio controller identifies one or more sound sources in the local area based on the captured sound. The audio controller further determines a target sound source of the one or more sound sources and determines one or more filters to apply to a sound signal associated with the target sound source in the captured sound. The audio controller further generates an augmented sound signal by applying the one or more filters to the sound signal and provides the augmented sound signal to the in-ear device for presentation to a user.
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公开(公告)号：US11082794B2
公开(公告)日：2021-08-03
申请号：US17006280
申请日：2020-08-28
Applicant: Facebook Technologies, LLC
Inventor： David Lou Alon , Maria Cuevas Rodriguez , Ravish Mehra , Philip Robinson
Abstract: An audio system captures audio data of test sounds through a microphone of a headset worn by a user. The test sounds are played by an external speaker, and the audio data includes audio data captured for different orientations of the headset with respect to the external speaker. A set of head-related transfer function (HRTFs) is calculated based at least in part on the audio data of the test sounds at the different orientations of the headset. A portion of the set of HRTFs is discarded to create an intermediate set of HRTFs. The discarded portion corresponding to one or more distortion regions that are based in part on wearing the headset. One or more HRTFs are generated that correspond to the discarded portion using at least some of the intermediate set of HRTFs to create an individualized set of HRTFs for the user.
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公开(公告)号：US10939204B1
公开(公告)日：2021-03-02
申请号：US16850995
申请日：2020-04-16
Applicant: FACEBOOK TECHNOLOGIES, LLC
Inventor： Vladimir Tourbabin , Ravish Mehra
Abstract: One embodiment of the present application sets forth a computer-implemented method that includes receiving, from a first microphone, a first input acoustic signal, generating a first audio spectrum from at least the first input acoustic signal, wherein the first audio spectrum includes a set of time-frequency bins, and selecting a first time-frequency bin from the set based on a first local space-domain distance (LSDD) computed for the first time-frequency bin.
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公开(公告)号：US10231053B1
公开(公告)日：2019-03-12
申请号：US15702680
申请日：2017-09-12
Applicant: Facebook Technologies, LLC
Inventor： Ravish Mehra , Antonio John Miller
Abstract: Embodiments relate to cancelling crosstalk vibrations due to the use of multiple bone conduction transducers by modifying bone conduction signals sent to the bone conduction transducers. The bone conduction signals are modified using an adaptive filter with its coefficients adjusted based on the vibrations generated at a bone conduction transducer and crosstalk vibrations sensed at a vibration sensor assembly. The bone conduction transducer for generating the calibration vibrations and the vibration sensor assembly for detecting the crosstalk vibrations may be placed at opposite sides of the user's head.
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公开(公告)号：US10231046B1
公开(公告)日：2019-03-12
申请号：US15680836
申请日：2017-08-18
Applicant: Facebook Technologies, LLC
Inventor： Antonio John Miller , Ravish Mehra
Abstract: An audio system includes a transducer assembly, an audio sensor, and a controller. The transducer assembly is coupled to a back of an auricle of an ear of the user. The transducer assembly vibrates the auricle over a frequency range to cause the auricle to create an acoustic pressure wave in accordance with vibration instructions. The acoustic sensor detects the acoustic pressure wave at an entrance of the ear of the user. The controller dynamically adjusts a frequency response model based in part on the detected acoustic pressure wave, updates the vibration instructions using the adjusted frequency response model, and provides the updated vibration instructions to the transducer assembly.
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Patent Agency Ranking
公开(公告)号：US20200327877A1
公开(公告)日：2020-10-15
申请号：US16379450
申请日：2019-04-09
Applicant: Facebook Technologies, LLC
Inventor： Vladimir Tourbabin , Jacob Ryan Donley , Antonio John Miller , Ravish Mehra
IPC: G10K11/178 , H04R3/00 , H04R1/40
Abstract: An audio system for a wearable device dynamically updates acoustic transfer functions. The audio system is configured to estimate a direction of arrival (DoA) of each sound source detected by a microphone array relative to a position of the wearable device within a local area. The audio system may track the movement of each sound source. The audio system may form a beam in the direction of each sound source. The audio system may identify and classify each sound source based on the sound source properties. Based on the DoA estimates, the movement tracking, and the beamforming, the audio system generates or updates the acoustic transfer functions for the sound sources.
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公开(公告)号：US10798515B2
公开(公告)日：2020-10-06
申请号：US16562616
申请日：2019-09-06
Applicant: Facebook Technologies, LLC
Inventor： David Lou Alon , Maria Cuevas Rodriguez , Ravish Mehra , Philip Robinson
Abstract: An audio system captures audio data of test sounds through a microphone of a headset worn by a user. The test sounds are played by an external speaker, and the audio data includes audio data captured for different orientations of the headset with respect to the external speaker. A set of head-related transfer function (HRTFs) is calculated based at least in part on the audio data of the test sounds at the different orientations of the headset. A portion of the set of HRTFs is discarded to create an intermediate set of HRTFs. The discarded portion corresponding to one or more distortion regions that are based in part on wearing the headset. One or more HRTFs are generated that correspond to the discarded portion using at least some of the intermediate set of HRTFs to create an individualized set of HRTFs for the user.
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公开(公告)号：US10757501B2
公开(公告)日：2020-08-25
申请号：US15967924
申请日：2018-05-01
Applicant: Facebook Technologies, LLC
Inventor： Ravish Mehra , Antonio John Miller , Morteza Khaleghimeybodi
Abstract: An audio system for providing content to a user. The system includes a first and a second transducer assembly of a plurality of transducer assemblies, an acoustic sensor, and a controller. The first transducer assembly couples to a portion of an auricle of the user's ear and vibrates over a first range of frequencies based on a first set of audio instructions. The vibration causes the portion of the ear to create a first range of acoustic pressure waves. The second transducer assembly is configured to vibrate over a second range of frequencies to produce a second range of acoustic pressure waves based on a second set of audio instructions. The acoustic sensor detects acoustic pressure waves at an entrance of the ear. The controller generates the audio instructions based on audio content to be provided to the user and the detected acoustic pressure waves from the acoustic sensor.
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公开(公告)号：US10728657B2
公开(公告)日：2020-07-28
申请号：US16440166
申请日：2019-06-13
Applicant: Facebook Technologies, LLC
Inventor： Ravish Mehra
Abstract: An image of at least a portion of a head of a user is received. A geometry is generated of the head wearing an eyewear device based in part on the received image of the head and a geometry of the eyewear device. The geometry of the eyewear device includes a microphone array composed of a plurality of acoustic sensors that are configured to detect sounds within a local area surrounding the microphone array. A simulation is performed of sound propagation between an audio source and the plurality of acoustic sensors based on the generated geometry. An acoustic transfer function (ATF) is determined associated with the microphone array based on the simulation. The determined ATF is customized to the user, and is provided to the eyewear device of the user.
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公开(公告)号：US10555106B1
公开(公告)日：2020-02-04
申请号：US15865079
申请日：2018-01-08
Applicant: Facebook Technologies, LLC
Inventor： Ravish Mehra
Abstract: Embodiments relate to a headset that filters sounds according to a direction of a gaze of a user wearing the headset. The user wears the headset including an eye tracking unit and one or more microphones. The eye tracking unit tracks an orientation of an eye of the user to determine the direction of the gaze of the user. The direction of the gaze may be different from a facing direction of the headset. According to the determined direction of the gaze of the user, input sound signals generated by the microphones can be beamformed to amplify or emphasize sound originating from the direction of the gaze.
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