公开(公告)号：US20230388736A1

公开(公告)日：2023-11-30

申请号：US18449624

申请日：2023-08-14

Applicant: Magic Leap, Inc.

Inventor： Remi Samuel AUDFRAY ,  Jean-Marc JOT ,  Samuel Charles DICKER

IPC: H04S7/00 ,  H04R5/033 ,  H04R5/04 ,  H04S3/00 ,  G10K15/10 ,  H04R3/04 ,  G02B27/01 ,  H04R3/12

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. A first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the sound source in the virtual environment, and the first intermediate audio signal is associated with a first bus. A second intermediate audio signal is determined. The second intermediate audio signal corresponds to a reverberation of the input audio signal in the virtual environment. The second intermediate audio signal is determined based on a location of the sound source, and further based on an acoustic property of the virtual environment. The second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first and second buses.

公开(公告)号：US20230121353A1

公开(公告)日：2023-04-20

申请号：US18069702

申请日：2022-12-21

Applicant: Magic Leap, Inc.

Inventor： Remi Samuel AUDFRAY ,  Jean-Marc JOT ,  Samuel Charles DICKER

IPC: H04S7/00 ,  H04R5/033 ,  H04R5/04 ,  H04S3/00 ,  G10K15/10 ,  H04R3/04 ,  G02B27/01 ,  H04R3/12

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. A first intermediate audio signal corresponding to the input audio signal is determined, based on a location of the sound source in the virtual environment, and the first intermediate audio signal is associated with a first bus. A second intermediate audio signal is determined. The second intermediate audio signal corresponds to a reverberation of the input audio signal in the virtual environment. The second intermediate audio signal is determined based on a location of the sound source, and further based on an acoustic property of the virtual environment. The second intermediate audio signal is associated with a second bus. The output audio signal is presented to the listener via the first and second buses.

公开(公告)号：US20220130370A1

公开(公告)日：2022-04-28

申请号：US17568588

申请日：2022-01-04

Applicant: Magic Leap, Inc

Inventor： Remi Samuel AUDFRAY ,  Jean-Marc JOT ,  Samuel Charles DICKER

IPC: G10K15/08

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)).

公开(公告)号：US20210258715A1

公开(公告)日：2021-08-19

申请号：US17174287

申请日：2021-02-11

Applicant: Magic Leap, Inc.

Inventor： Remi Samuel AUDFRAY ,  Mark Brandon HERTENSTEINER ,  Samuel Charles DICKER ,  Blaine Ivin WOOD ,  Michael Z. LAND

IPC: H04S7/00

Abstract: Disclosed herein are systems and methods for efficiently rendering audio. A method may include receiving a request to present a first audio track, wherein the first audio track is based on a first audio model comprising a shared model component and a first model component; receiving a request to present a second audio track, wherein the second audio track is based on a second audio model comprising the shared model component and a second model component; rendering a sound based on the first audio track, the second audio track, the shared model component, the first model component, and the second model component; and presenting, via one or more speakers, the an audio signal comprising the rendered sound.

公开(公告)号：US20210160648A1

公开(公告)日：2021-05-27

申请号：US17109974

申请日：2020-12-02

Applicant: Magic Leap, Inc.

Inventor： Samuel Charles DICKER

IPC: H04S7/00 ,  H04R5/033 ,  H04R5/04 ,  H04S3/00 ,  H04R3/04

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 first input audio signal is received. The first input audio signal is processed to generate a first output audio signal. The first output audio signal is presented via one or more speakers associated with the wearable head device. Processing the first input audio signal comprises applying a pre-emphasis filter to the first input audio signal; adjusting a gain of the first input audio signal; and applying a de-emphasis filter to the first audio signal. Applying the pre-emphasis filter to the first input audio signal comprises attenuating a low frequency component of the first input audio signal. Applying the de-emphasis filter to the first input audio signal comprises attenuating a high frequency component of the first input audio signal.

公开(公告)号：US20190387352A1

公开(公告)日：2019-12-19

申请号：US16445171

申请日：2019-06-18

Applicant: Magic Leap, Inc.

Inventor： Jean-Marc JOT ,  Samuel Charles DICKER ,  Brian Lloyd SCHMIDT ,  Remi Samuel AUDFRAY

IPC: H04S7/00 ,  H04S3/00 ,  H04R5/04 ,  H04R3/12 ,  G02B27/01

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.

公开(公告)号：US20190385587A1

公开(公告)日：2019-12-19

申请号：US16442359

申请日：2019-06-14

Applicant: Magic Leap, Inc.

Inventor： Remi Samuel AUDFRAY ,  Jean-Marc JOT ,  Samuel Charles DICKER

IPC: G10K15/08

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)).

公开(公告)号：US20190373366A1

公开(公告)日：2019-12-05

申请号：US16427315

申请日：2019-05-30

Applicant: Magic Leap, Inc.

Inventor： Remi Samuel AUDFRAY ,  Jean-Marc JOT ,  Samuel Charles DICKER

IPC: H04R3/04 ,  H04R29/00

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.