Abstract: An audio system in a local area providing an audio signal to a headset of a remote user is presented herein. The audio system identifies sounds from a human sound source in the local area, based in part on sounds detected within the local area. The audio system generates an audio signal for presentation to a remote user within a virtual representation of the local area based in part on a location of the remote user within the virtual representation of the local area relative to a virtual representation of the human sound source within the virtual representation of the local area. The audio system provides the audio signal to a headset of the remote user, wherein the headset presents the audio signal as part of the virtual representation of the local area to the remote user.

Abstract: A method includes a computing system associated with a first artificial-reality device accessing sensor data of a real environment, generating a first plurality of feature descriptors for the real environment, and generating a second plurality of feature descriptors for the real environment based on the first plurality of feature descriptors, wherein the second plurality of feature descriptors have lower detail than the first plurality of feature descriptors. The computing system may further cause the first plurality of feature descriptors to be transmitted using a wireless connection, wherein the transmitted first plurality of feature descriptors are configured to be converted into a third plurality of feature descriptors different from the second plurality of feature descriptors. The third plurality of feature descriptors are configured to be used by a second artificial-reality device for tracking the real environment.

Abstract: Encryption engines shuffle data segments during encryption and/or decryption, thereby obtaining a random permutation of the data segments to be used during encryption and/or decryption. By shuffling the data during encryption/decryption and using the resulting random permutation for encryption/decryption, the encryption engines obfuscate the power consumption information that attackers might access as part of an SCA. In some examples, the encryption engines perform intra-round shuffling of the input data within a reduced-sized encryption datapath configured to iteratively compute a portion of an encrypted block of data.

Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.

Abstract: Systems may include a watch band, a watch body comprising at least one image sensor configured to capture a wide-angle image, a coupling mechanism configured to detachably couple the watch body to the watch band, and at least one biometric sensor on at least one of the watch band or the watch body.

Abstract: A communication system provides audio content to one or more client devices capable of playing spatialized audio content. For example, the communication system receives audio content from a client device and transmits the audio content to other client devices to be played for users. The communication system dynamically modifies audio content transmitted to different client devices based on a payload including audio parameters (e.g., local area acoustic properties, an audiogram for a user, a head related transfer function for a user, etc.) received from a client device.

Abstract: According to examples, a depth sensing apparatus may include an illumination source to output a light beam onto a polarizing beam separation element (PBSE). The PBSE may generate a right hand circularly polarized (RCP) beam and a left hand circularly polarized (LCP) beam to be projected onto a target area, in which the RCP beam and the LCP beam may create an interference with respect to each other. The depth sensing apparatus also includes an imaging component to capture an image of the target area with the RCP beam and the LCP beam projected on the target area, in which the captured image is to be analyzed for depth sensing of the target area. The depth sensing apparatus further includes a polarizer that may increase an intensity of the interference pattern.

Abstract: Disclosed herein includes a wireless electronic device, including an outer casing, an antenna, and a metallic sheet. The outer casing may be electrically non-conductive. The antenna may be disposed within the outer casing and configured to perform wireless communication of signals at an operating wavelength of ? unit length. The metallic sheet may be disposed on a portion of the outer casing and placed at a distance of at least ?/25 unit length apart from the antenna. The metallic sheet may be configured to shield a subject exposed to energy radiated by the antenna to limit the specific absorption rate (SAR) of the subject to less than 1.6 W/kg.

Abstract: An arm-wearable device for sensing neuromuscular signals using a shared reference electrode that is shared between two or more electrodes is provided. The arm-wearable device includes a structure configured to be worn by a user, the structure having an interior surface configured to contact a user's skin when the arm-wearable device is donned by the user. The arm-wearable device includes a first electrode, a second electrode, and a shared reference electrode, each electrode contacts the user's skin above respective neuromuscular pathways of the user when the wearable structure is worn by the user. The first and second electrodes detect neuromuscular signals and the shared reference electrode detects a reference neuromuscular signal. The arm-wearable device includes circuitry configured to compare the neuromuscular signals and the reference neuromuscular signal to determine a motor action that the user intends to perform with their hand.

Abstract: Systems and methods for ultra-wideband (UWB) in-band discovery may include a first UWB device which determines an availability for associations with potential controlees, and which generates and transmits an application control (AC) information element (IE) indicating the availability. A second UWB device may receive the AC IE, select an available slot for transmitting an association request to the first UWB device, and transmit the association request in the available slot. The first UWB device may receive the association request, generate an association response, and transmit the association response to the second UWB device.

Abstract: Described embodiments provide systems and methods for adjusting a radio usage of a wireless link according to a time-averaged specific absorption rate (SAR). A first device configured to concurrently maintain a first wireless link with a second device and a second wireless link with an access point of a network may determine a proposed radio usage of the first wireless link and the second wireless link. The first device may determine a state of the first device according to the proposed radio usage and sensor information from at least one sensor of the first device. The first device may determine a time-averaged SAR of a user due to the first device, according to a defined time window and the determined state of the first device, to adjust the proposed radio usage of the first wireless link and the second wireless link to satisfy a threshold level of the time-averaged SAR.

Abstract: A mechanically and piezoelectrically anisotropic polymer thin film is formed from a crystallizable polymer and an additive configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film and its method of manufacture may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example polymers may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. Example additives may occupy up to approximately 60 wt. % of the polymer thin film. The polymer thin film may be characterized by a piezoelectric coefficient (d31) of at least approximately 5 pC/N or an electromechanical coupling factor (k31) of at least approximately 0.1.

Abstract: A method for training a real-time, modeling for animating an avatar for a subject is provided. The method includes collecting multiple images of a subject. The method also includes selecting a plurality of vertex positions in a guide mesh, indicative of a volumetric primitive enveloping the subject, determining a geometric attribute for the volumetric primitive including a position, a rotation, and a scale factor of the volumetric primitive, determining a payload attribute for each of the volumetric primitive, the payload attribute including a color value and an opacity value for each voxel in a voxel grid defining the volumetric primitive, determining a loss factor for each point in the volumetric primitive based on the geometric attribute, the payload attribute and a ground truth value, and updating a three-dimensional model for the subject. A system and a non-transitory, computer-readable medium storing instructions to perform the above method are also provided.

Abstract: In one embodiment, a method includes rendering, for a VR display device and based on a field of view of a user in a real-world environment, a first output image of a VR environment comprising a virtual boundary corresponding to a real-world environment; determining a pose of one or more real-world objects in the real-world environment relative to the user; and rendering, for the VR display device, a second output image comprising the VR environment comprising one or more outline rendered views of the one or more real-world objects, wherein a pose of the one or more outline rendered views of the one or more real-world objects relative to the user corresponds to the pose of the one or more real-world objects.

Abstract: An electronic device includes an electronic component, a thermal ground, and a thermal interface material having a first side coupled to the electronic component and a second side coupled to the thermal ground, such that the thermal interface material draws thermal energy from the electronic component and transfers thermal energy to the thermal ground. The thermal interface material includes a body comprising thermally conductive silicone, the body disposed in thermal contact with the electrical component, and the thermally conductive silicone having a first thermal conductivity, and a plurality of thermally conductive fibers disposed within the body of the thermal interface material, the thermally conductive fibers having a second thermal conductivity greater than the first thermal conductivity.

Abstract: The disclosed system may include an enclosure that is configured to house internal electrical components disposed on a printed circuit board (PCB). The system may also include a first antenna feed that is electrically connected to the PCB, to the enclosure, and to a radiating coupling arm configured for wireless communication in a first wireless communication band. The system may further include a second antenna feed that is electrically connected to the PCB and to an antenna configured for wireless communication in a second, different wireless communication band. The system may also include a first grounding leg that forms an electrical ground between the PCB and the enclosure, and a second, switchable grounding leg positioned away from the first grounding leg. This switchable grounding leg may provide a controllable electrical ground between the PCB and the enclosure. Various other methods and apparatuses are also disclosed.

Abstract: Aspects of the present disclosure relate to orchestrating calls with an “active call bar” for an artificial reality (XR) environment displayed on an XR device, with a control bar for voice calls that persists across XR experiences. From the active call bar, a user can create a voice call with other users on XR devices, end the call, manage participants of the call, adjust the volume of the call, etc. The user can further see which XR experiences the other users within the party are accessing, and can invite them to join their XR experience. As the user moves between experiences and applications, the active call bar can persist on the user interface. Further, the user can continue the voice call across different experiences regardless of where other users are, i.e., users do not have to be co-located in the same experience to participate in the voice call.

Abstract: An eye-tracking system may include a light source to emit infrared (IR) light. A waveguide may include an input coupler. A scanner may be to direct the infrared (IR) light to the input coupler, which may be configured to direct the infrared (IR) light to exit the waveguide toward an eyebox region for eye-tracking. The scanner may be to direct visible light to the input coupler. The input coupler may be to direct the visible light toward the eyebox region for display as a virtual image. A sensor may be to generate an imaging signal when infrared (IR) light impinges upon the sensor via the scanner and the input coupler.

Abstract: A display element of an optical stack assembly in an augmented reality (AR) near-eye display device may be protected against ultraviolet (UV) and/or infrared (IR) exposure through one or more protective coatings on various surfaces of the elements of the optical stack assembly. A photochromic coating on one of the surfaces of the elements of the optical stack assembly may also be used instead of or in addition to the protective coatings.