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公开(公告)号：US11190870B2
公开(公告)日：2021-11-30
申请号：US16905684
申请日：2020-06-18
Applicant: Apple Inc.
Inventor： Martin E. Johnson , Gordon R. Dix , Michael B. Howes , Gary P. Geaves , Tom-Davy William Jendrik Saux
Abstract: A multi-way speaker array is disclosed that includes rings of transducers of different types. The rings of transducers may encircle the cabinet of the speaker array such that the speaker array is rotationally symmetric. The distance between rings of transducers may be based on a logarithmic scale. By separating rings of transducers using logarithmic spacing, denser transducer spacing at short wavelengths is achieved while limiting the number of transducers needed for longer wavelengths by spacing them in larger and larger logarithmic increments. Transducers with overlapping frequency ranges may be used in the speaker array to avoid initial dips or shortfalls in directivity for corresponding beam patterns.
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公开(公告)号：US11115773B1
公开(公告)日：2021-09-07
申请号：US16560485
申请日：2019-09-04
Applicant: Apple Inc.
Inventor： Darius A. Satongar , Martin E. Johnson , Peter Victor Jupin , Jonathan D. Sheaffer
Abstract: An audio system and a method of using the audio system to generate a head-related transfer function (HRTF) map, are described. The audio system can determine one or more HRTF and corresponding HRTF locations along an azimuthal path of an azimuth extending around a head of a user. The HRTFs or HRTF locations can be measured, and other HRTFs or HRTF locations can be interpolated or extrapolated. The HRTF map can include the HRTFs assigned to HRTF locations along the azimuth. HRTFs from the HRTF map are used to render spatial audio to the user. Other aspects are also described and claimed.
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93.发明授权公开(公告)号：US10986461B2
公开(公告)日：2021-04-20
申请号：US16030736
申请日：2018-07-09
Applicant: Apple Inc.
Inventor： Martin E. Johnson , Ronald N. Isaac , Afrooz Family
Abstract: A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.
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公开(公告)号：US10798511B1
公开(公告)日：2020-10-06
申请号：US16378438
申请日：2019-04-08
Applicant: Apple Inc.
Inventor： Jonathan D. Sheaffer , Juha O. Merimaa , Jason Wung , Martin E. Johnson , Peter A. Raffensperger , Joshua D. Atkins , Symeon Delikaris Manias , Mehrez Souden
IPC: H04S5/00 , G10K11/178 , H04R1/40
Abstract: Processing input audio channels for generating spatial audio can include receiving a plurality of microphone signals that capture a sound field. Each microphone signal can be transformed into a frequency domain signal. From each frequency domain signal, a direct component and a diffuse component can be extracted. The direct component can be processed with a parametric renderer. The diffuse component can be processed with a linear renderer. The components can be combined, resulting in a spatial audio output. The levels of the components can be adjusted to match a direct to diffuse ratio (DDR) of the output with the DDR of the captured sound field. Other aspects are also described and claimed.
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公开(公告)号：US10771742B1
公开(公告)日：2020-09-08
申请号：US16512086
申请日：2019-07-15
Applicant: Apple Inc.
Inventor： Aleksandar Pance , Brett Bilbrey , Darby E. Hadley , Martin E. Johnson , Ronald Nadim Isaac
IPC: H04N7/14 , H04N7/15 , H04N5/232 , G10L17/00 , G06F3/0484
Abstract: A system for enhancing audio including a plurality of sensors, an output device, and a processor in communication with the plurality of sensors and the output device. The processor is configured to process data captured by the plurality of sensors, and based on that, modify an output of the output device. The processor also is configured to determine whether there are a plurality of users associated with a video conferencing session, determine which user of the plurality of users is speaking, and enhance the audio or video output of the speaking user on the output device.
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Patent Agency Ranking
公开(公告)号：US20200221216A1
公开(公告)日：2020-07-09
申请号：US16822474
申请日：2020-03-18
Applicant: Apple Inc.
Inventor： Martin E. Johnson , Simon K. Porter , Suzanne Hardy , John H. Sheerin
Abstract: Loudspeakers are described that may reduce comb filtering effects perceived by a listener by either 1) moving transducers closer to a sound reflective surface (e.g., a baseplate, a tabletop or a floor) through vertical (height) or rotational adjustments of the transducers or 2) guiding sound produced by the transducers to be released into the listening area proximate to the reflective surface through the use of horns and openings that are at a prescribed distance from the reflective surface. The reduction of this distance between the reflective surface and the point at which sound emitted by the transducers is released into the listening area may lead to shorter reflected path that reduces comb filtering effects caused by reflected sounds that are delayed relative to the direct sound. Accordingly, the loudspeakers shown and described may be placed on reflective surfaces without severe audio coloration caused by reflected sounds.
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公开(公告)号：US10652687B2
公开(公告)日：2020-05-12
申请号：US16126974
申请日：2018-09-10
Applicant: Apple Inc.
Inventor： Darius A. Satongar , Joshua D. Atkins , Justin D. Crosby , Lance F. Reichert , Martin E. Johnson , Sawyer Cohen
Abstract: A presence of a person within a camera field of view of an electronic device is determined by digitally processing images captured by a camera. A position of a body member of the person with respect to the electronic device is also computed by digitally processing the camera captured images. A crosstalk cancellation (XTC) signal is adjusted based on the computed position of the body member. Adjusting the XTC signal includes adjusting a first predetermined model location, which includes a location at which a user should be in order to achieve a desired virtual acoustics effect. Processing program audio based on the adjusted XTC signal, to generate audio signals that drive speakers. Other aspects are also described and claimed.
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公开(公告)号：US20200084560A1
公开(公告)日：2020-03-12
申请号：US16126974
申请日：2018-09-10
Applicant: Apple Inc.
Inventor： Darius A. Satongar , Joshua D. Atkins , Justin D. Crosby , Lance F. Reichert , Martin E. Johnson , Sawyer Cohen
Abstract: A presence of a person within a camera field of view of an electronic device is determined by digitally processing images captured by a camera. A position of a body member of the person with respect to the electronic device is also computed by digitally processing the camera captured images. A crosstalk cancellation (XTC) signal is adjusted based on the computed position of the body member. Adjusting the XTC signal includes adjusting a first predetermined model location, which includes a location at which a user should be in order to achieve a desired virtual acoustics effect. Processing program audio based on the adjusted XTC signal, to generate audio signals that drive speakers. Other aspects are also described and claimed.
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公开(公告)号：US10542365B2
公开(公告)日：2020-01-21
申请号：US15504314
申请日：2014-08-18
Applicant: Apple Inc.
Inventor： Afrooz Family , Martin E. Johnson , Baptiste P. Paquier
Abstract: An audio system is provided that efficiently detects speaker arrays and configures the speaker arrays to output sound. In this system, a computing device may record the addresses and/or types of speaker arrays on a shared network while a camera captures video of a listening area, including the speaker arrays. The captured video may be analyzed to determine the location of the speaker arrays, one or more users, and/or the audio source in the listening area. While capturing the video, the speaker arrays may be driven to sequentially emit a series of test sounds into the listening area and a user may be prompted to select which speaker arrays in the captured video emitted each of the test sounds. Based on these inputs from the user, the computing device may determine an association between the speaker arrays on the shared network and the speaker arrays in the captured video.
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公开(公告)号：US10402151B2
公开(公告)日：2019-09-03
申请号：US15592983
申请日：2017-05-11
Applicant: Apple Inc.
Inventor： Aleksandar Pance , Brett Bilbrey , Darbey E. Hadley , Martin E. Johnson , Ronald Nadim Isaac
IPC: H04S7/00 , G06F3/16 , H04N21/422 , H04N21/4143 , H04N21/4223 , H04N21/439 , H04N21/442 , H04N7/15 , H04R3/04 , H04R29/00 , H04N7/14 , H04N5/60 , H04N5/44 , H04N21/45 , H04N21/485
Abstract: A system for enhancing audio including a computer and an output device. The computer includes a sensor configured to determine a user location relative to the computer. The sensor is also configured to gather environment data corresponding to an environment of the computer. The computer also includes a processor in communication with the sensor and configured to process the user location and the environment data and adjust at least one of an audio output or a video output. The output device is in communication with the processor and is configured to output at least one of the audio output or the video output.
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