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公开(公告)号：US20230413007A1
公开(公告)日：2023-12-21
申请号：US18461289
申请日：2023-09-05
Applicant: Magic Leap, Inc.
Inventor： Jean-Marc Jot , Samuel Charles Dicker , Brian Lloyd Schmidt , Remi Samuel Audfray
CPC classification number: H04S7/304 , H04R5/033 , H04R5/04 , H04S3/008 , G10K15/10 , H04R3/04 , G02B27/017 , H04R3/12 , H04S7/305 , H04S2400/13 , H04S2400/01 , H04S2400/15 , H04R2499/15 , G02B2027/0178 , H04S2420/11
Abstract: Systems and methods of presenting an output audio signal to a listener located at a first location in a virtual environment are disclosed. According to embodiments of a method, an input audio signal is received. For each sound source of a plurality of sound sources in the virtual environment, a respective first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the respective sound source in the virtual environment, and the respective first intermediate audio signal is associated with a first bus. For each of the sound sources of the plurality of sound sources in the virtual environment, a respective second intermediate audio signal is determined. The respective second intermediate audio signal corresponds to a reflection of the input audio signal in a surface of the virtual environment. The respective second intermediate audio signal is determined based on a location of the respective sound source, and further based on an acoustic property of the virtual environment. The respective second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first bus and the second bus.
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公开(公告)号：US11778411B2
公开(公告)日：2023-10-03
申请号：US18061367
申请日：2022-12-02
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker , Mark Brandon Hertensteiner , Justin Dan Mathew , Anastasia Andreyevna Tajik , Nicholas John LaMartina
CPC classification number: H04S7/304 , H04R5/033 , H04R5/04 , H04S3/008 , H04S2400/01 , H04S2400/11 , H04S2420/01
Abstract: Examples of the disclosure describe systems and methods for presenting an audio signal to a user of a wearable head device. According to an example method, a source location corresponding to the audio signal is identified. For each of the respective left and right ear of the user, a virtual speaker position, of a virtual speaker array, is determined, the virtual speaker position collinear with the source location and with a position of the respective ear. For each of the respective left and right ear of the user, a head-related transfer function (HRTF) corresponding to the virtual speaker position and to the respective ear is determined; and the output audio signal is presented to the respective ear of the user via one or more speakers associated with the wearable head device. Processing the audio signal includes applying the HRTF to the audio signal.
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公开(公告)号：US11678117B2
公开(公告)日：2023-06-13
申请号：US17111318
申请日：2020-12-03
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
CPC classification number: H04R3/04 , H04R29/001 , H04R2430/01
Abstract: A method of processing an audio signal is disclosed. According to embodiments of the method, magnitude response information of a prototype filter is determined. The magnitude response information includes a plurality of gain values, at least one of which includes a first gain corresponding to a first frequency. The magnitude response information of the prototype filter is stored. The magnitude response information of the prototype filter at the first frequency is retrieved. Gains are computed for a plurality of control frequencies based on the retrieved magnitude response information of the prototype filter at the first frequency, and the computed gains are applied to the audio signal.
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公开(公告)号：US11570570B2
公开(公告)日：2023-01-31
申请号：US17175374
申请日：2021-02-12
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
Abstract: Systems and methods of presenting an output audio signal to a listener located at a first location in a virtual environment are disclosed. According to embodiments of a method, an input audio signal is received. For each sound source of a plurality of sound sources in the virtual environment, a respective first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the respective sound source in the virtual environment, and the respective first intermediate audio signal is associated with a first bus. For each of the sound sources of the plurality of sound sources in the virtual environment, a respective second intermediate audio signal is determined. The respective second intermediate audio signal corresponds to a reverberation of the input audio signal in the virtual environment. The respective second intermediate audio signal is determined based on a location of the respective sound source, and further based on an acoustic property of the virtual environment. The respective second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first bus and the second bus.
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公开(公告)号：US20220417686A1
公开(公告)日：2022-12-29
申请号：US17897036
申请日：2022-08-26
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
Abstract: Systems and methods for rendering audio signals are disclosed. In some embodiments, a method may receive an input signal including a first portion and the second portion. A first processing stage comprising a first filter is applied to the first portion to generate a first filtered signal. A second processing stage comprising a second filter is applied to the first portion to generate a second filtered signal. A third processing stage comprising a third filter is applied to the second portion to generate a third filtered signal. A fourth processing stage comprising a fourth filter is applied to the second portion to generate a fourth filtered signal. A first output signal is determined based on a sum of the first filtered signal and the third filtered signal. A second output signal is determined based on a sum of the second filtered signal and the fourth filtered signal. The first output signal is presented to a first ear of a user of a virtual environment, and the second output signal is presented to the second ear of the user. The first portion of the input signal corresponds to a first location in the virtual environment, and the second portion of the input signal corresponds to a second location in the virtual environment.
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Patent Agency Ranking
公开(公告)号：US11252528B2
公开(公告)日：2022-02-15
申请号：US17064476
申请日：2020-10-06
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot
Abstract: A system and method for providing low interaural coherence at low frequencies is disclosed. In some embodiments, the system may include a reverberator and a low-frequency interaural coherence control system. The reverberator may include two sets of comb filters, one for the left ear output signal and one for the right ear output signal. The low-frequency interaural coherence control system can include a plurality of sections, each section can be configured to control a certain frequency range of the signals that propagate through the given section. The sections may include a left high-frequency section for the left ear output signal and a right high-frequency section for the right ear output signal. The sections may also include a shared low-frequency section that can output signals to be combined by combiners of the left and right high-frequency sections.
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公开(公告)号：US11250834B2
公开(公告)日：2022-02-15
申请号：US17020584
申请日：2020-09-14
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
Abstract: Systems and methods for providing accurate and independent control of reverberation properties are disclosed. In some embodiments, a system may include a reverberation processing system, a direct processing system, and a combiner. The reverberation processing system can include a reverb initial power (RIP) control system and a reverberator. The RIP control system can include a reverb initial gain (RIG) and a RIP corrector. The RIG can be configured to apply a RIG value to the input signal, and the RIP corrector can be configured to apply a RIP correction factor to the signal from the RIG. The reverberator can be configured to apply reverberation effects to the signal from the RIP control system. In some embodiments, one or more values and/or correction factors can be calculated and applied such that the signal output from a component in the reverberation processing system is normalized to a predetermined value (e.g., unity (1.0)).
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公开(公告)号：US20210160616A1
公开(公告)日：2021-05-27
申请号：US17111318
申请日：2020-12-03
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
Abstract: A method of processing an audio signal is disclosed. According to embodiments of the method, magnitude response information of a prototype filter is determined. The magnitude response information includes a plurality of gain values, at least one of which includes a first gain corresponding to a first frequency. The magnitude response information of the prototype filter is stored. The magnitude response information of the prototype filter at the first frequency is retrieved. Gains are computed for a plurality of control frequencies based on the retrieved magnitude response information of the prototype filter at the first frequency, and the computed gains are applied to the audio signal.
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公开(公告)号：US20210152970A1
公开(公告)日：2021-05-20
申请号：US17092060
申请日：2020-11-06
Applicant: Magic Leap, Inc.
Inventor： Jean-Marc JOT , Samuel Charles Dicker , Brian Lloyd Schmidt , Remi Samuel Audfray
Abstract: Systems and methods of presenting an output audio signal to a listener located at a first location in a virtual environment are disclosed. According to embodiments of a method, an input audio signal is received. For each sound source of a plurality of sound sources in the virtual environment, a respective first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the respective sound source in the virtual environment, and the respective first intermediate audio signal is associated with a first bus. For each of the sound sources of the plurality of sound sources in the virtual environment, a respective second intermediate audio signal is determined. The respective second intermediate audio signal corresponds to a reflection of the input audio signal in a surface of the virtual environment. The respective second intermediate audio signal is determined based on a location of the respective sound source, and further based on an acoustic property of the virtual environment. The respective second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first bus and the second bus.
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公开(公告)号：US10952010B2
公开(公告)日：2021-03-16
申请号：US16905855
申请日：2020-06-18
Applicant: Magic Leap, Inc.
Inventor： Remi Samuel Audfray , Jean-Marc Jot , Samuel Charles Dicker
Abstract: Systems and methods of presenting an output audio signal to a listener located at a first location in a virtual environment are disclosed. According to embodiments of a method, an input audio signal is received. For each sound source of a plurality of sound sources in the virtual environment, a respective first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the respective sound source in the virtual environment, and the respective first intermediate audio signal is associated with a first bus. For each of the sound sources of the plurality of sound sources in the virtual environment, a respective second intermediate audio signal is determined. The respective second intermediate audio signal corresponds to a reverberation of the input audio signal in the virtual environment. The respective second intermediate audio signal is determined based on a location of the respective sound source, and further based on an acoustic property of the virtual environment. The respective second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first bus and the second bus.
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