Abstract: Systems, devices, and methods for localizing magnets are useful for biological tissue analysis and other applications. Tissue analysis systems for use with a tissue analysis device may include a storage medium storing computer readable instructions that cause the execution of magnet localization methods. The system may include the tissue analysis device, which includes a magnet and a magnetometer array disposed adjacent to the magnet. When executed by a processor, the instructions cause operations, including recording a magnetic field of the magnet with the magnetometer array, simulating a simulated magnetic field at each magnetometer of the magnetometer array, and estimating positional information of the magnet based upon iterating simulated positional information of the simulated magnet.

Abstract: Methods and systems for generating three-dimensional (3D) engineered tissues (ETs), and for electrical stimulation of same, are provided. Provided is an ET assembly comprising an ET lid with first post and second post assemblies coupled thereto. Provided is a casting assembly comprising the ET assembly and a casting plate. Provided are stimulation methods and systems for stimulating tissue constructs.

Abstract: An eyeglass headphone with a frame that is constructed and arranged to be carried by the head of a wearer, the frame comprising a bridge that is adapted to be supported by the wearer's nose, and a left temple and a right temple that extend rearwardly from the bridge, toward the left and right ears of the wearer, respectively, and a dipole loudspeaker built into the frame, where the dipole loudspeaker comprises a driver that emits front-side acoustic radiation from its front side, and emits rear-side acoustic radiation from its rear side. The frame comprises at least first and second sound-emitting openings, wherein the first sound-emitting opening is constructed and arranged to emit front-side acoustic radiation and the second sound-emitting opening is constructed and arranged to emit rear-side acoustic radiation.

Abstract: A microphone assembly for providing improved directivity at high and low frequencies is disclosed. The microphone assemblies comprise two waveguides each having a microphone, a high-frequency port, and a low-frequency port. The two waveguides are arranged adjacent to each other so that the two low-frequency ports are arranged at a first distance apart from each other and so that the two high-frequency ports are arranged at a second distance apart from each other. The microphone assemblies may comprise two additional waveguides of different length than the first two waveguides, where the two additional waveguides also have low frequency ports and high frequency ports. When the four waveguides are arranged adjacent to each other, all the low-frequency ports are at one distance from each other and all the high-frequency ports are at another distance from each other.

Abstract: An eyeglass headphone with a frame that is constructed and arranged to be carried by the head of a wearer, the frame comprising a bridge that is adapted to be supported by the wearer's nose, and a left temple and a right temple that extend rearwardly from the bridge, toward the left and right ears of the wearer, respectively, and a dipole loudspeaker built into the frame, where the dipole loudspeaker comprises a driver that emits front-side acoustic radiation from its front side, and emits rear-side acoustic radiation from its rear side. The frame comprises at least first and second sound-emitting openings, wherein the first sound-emitting opening is constructed and arranged to emit front-side acoustic radiation and the second sound-emitting opening is constructed and arranged to emit rear-side acoustic radiation.

Abstract: A microphone assembly for providing improved directivity at high and low frequencies is disclosed. The microphone assemblies comprise two waveguides each having a microphone, a high-frequency port, and a low-frequency port. The two waveguides are arranged adjacent to each other so that the two low-frequency ports are arranged at a first distance apart from each other and so that the two high-frequency ports are arranged at a second distance apart from each other. The microphone assemblies may comprise two additional waveguides of different length than the first two waveguides, where the two additional waveguides also have low frequency ports and high frequency ports. When the four waveguides are arranged adjacent to each other, all the low-frequency ports are at one distance from each other and all the high-frequency ports are at another distance from each other.

Abstract: An acoustic transducer with an acoustic element that emits or receives front-side acoustic radiation from its front side, and emits or receives rear-side acoustic radiation from its rear side. A housing directs the front-side acoustic radiation and the rear-side acoustic radiation. A plurality of sound-conducting vents in the housing allow sound to enter the housing or allow sound to leave the housing. A distance between vents defines an effective length of an acoustic dipole. The housing and its vents are constructed and arranged such that the effective dipole length is frequency dependent.

Abstract: An audio device with an acoustic radiator that emits acoustic radiation from a first side, a housing that defines an acoustic cavity that receives the acoustic radiation emitted from the first side of the acoustic radiator, and first and second sound-emitting outlets in the housing and acoustically coupled to the acoustic cavity such that the outlets emit sound from the acoustic cavity. The second sound-emitting outlet has a greater equivalent acoustic impedance than the first sound-emitting outlet.

Abstract: An acoustic transducer with an acoustic element that emits or receives front-side acoustic radiation from its front side, and emits or receives rear-side acoustic radiation from its rear side. A housing directs the front-side acoustic radiation and the rear-side acoustic radiation. A plurality of sound-conducting vents in the housing allow sound to enter the housing or allow sound to leave the housing. A distance between vents defines an effective length of an acoustic dipole. The housing and its vents are constructed and arranged such that the effective dipole length is frequency dependent.

Abstract: The system described herein can generate a vehicle token identified by the vehicle's vehicle identification number (VIN) upon manufacture of a vehicle and record the creation of the vehicle token on a distributed ledger. Throughout the life of the vehicle, the vehicle token can be updated with information regarding the vehicle (e.g., maintenance records, accidents, upgrades, owners, locations) and such information can be recorded on the distributed ledger. The system can mine and analyze the information recorded on the distributed ledger to determine a valuation or score of the vehicle, to advertise, and to connect potential buyers and sellers.

Abstract: An acoustic transducer with an acoustic element that emits or receives front-side acoustic radiation from its front side, and emits or receives rear-side acoustic radiation from its rear side. A housing directs the front-side acoustic radiation and the rear-side acoustic radiation. A plurality of sound-conducting vents in the housing allow sound to enter the housing or allow sound to leave the housing. A distance between vents defines an effective length of an acoustic dipole. The housing and its vents are constructed and arranged such that the effective dipole length is frequency dependent.

Abstract: An audio device with an acoustic radiator that emits acoustic radiation from a first side, a housing that defines an acoustic cavity that receives the acoustic radiation emitted from the first side of the acoustic radiator, and first and second sound-emitting outlets in the housing and acoustically coupled to the acoustic cavity such that the outlets emit sound from the acoustic cavity. The second sound-emitting outlet has a greater equivalent acoustic impedance than the first sound-emitting outlet.

Abstract: This disclosure is generally directed to a system and method for diagnosing display capabilities, such as resolution, frame rate, and content protection, of display devices and improving the performance of the display devices by optimizing the display settings based on the results of the diagnosing. Display diagnostics receives information from display devices in response to tests performed on the display devices. The display diagnostics analyzes the information and provides recommended display settings related to the display device for optimizing the display of video content on the display device.

Abstract: This disclosure is generally directed to a system and method for diagnosing display capabilities, such as resolution, frame rate, and content protection, of display devices and improving the performance of the display devices by optimizing the display settings based on the results of the diagnosing. Display diagnostics receives information from display devices in response to tests performed on the display devices. The display diagnostics analyzes the information and provides recommended display settings related to the display device for optimizing the display of video content on the display device.

Abstract: An acoustic transducer with an acoustic element that emits or receives front-side acoustic radiation from its front side, and emits or receives rear-side acoustic radiation from its rear side. A housing directs the front-side acoustic radiation and the rear-side acoustic radiation. A plurality of sound-conducting vents in the housing allow sound to enter the housing or allow sound to leave the housing. A distance between vents defines an effective length of an acoustic dipole. The housing and its vents are constructed and arranged such that the effective dipole length is frequency dependent.

Abstract: A waveguide for conducting sound that is generated by a loudspeaker that is acoustically coupled to the waveguide. There is a duct with an external wall, an interior opening circumscribed by the wall, and an outlet, and an air-adsorbent structure coupled to an inside of the external wall of the duct such that the air adsorbent structure lines at least a portion of the wall. The apparent volume ratio of the air adsorbent structure is at least about 1.5.

Abstract: Various embodiments of systems and methods are described herein for obtaining wide field OCT images and other types of image data from at least one portion of a sample. Various embodiments of systems and methods are described herein for assessing a degree of differentiation for a second region of an OCT image of a tissue sample with respect to another first. Various embodiments of a sample container are also described herein for containing a tissue sample and maintaining the tissue sample in a defined orientation during imaging or handling.

Abstract: Various embodiments of systems and methods are described herein for obtaining wide field OCT images and other types of image data from at least one portion of a sample. Various embodiments of systems, and methods are described herein for assessing a degree of differentiation for a second region of an OCT image of a tissue sample with respect to another first. Various embodiments of a sample container are also described herein for containing a tissue sample and maintaining the tissue sample in a defined orientation during imaging or handling.

Abstract: Various embodiments of systems and methods are described herein for obtaining wide field OCT images and other types of image data from at least one portion of a sample. Various embodiments of systems, and methods are described herein for assessing a degree of differentiation for a second region of an OCT image of a tissue sample with respect to another first. Various embodiments of a sample container are also described herein for containing a tissue sample and maintaining the tissue sample in a defined orientation during imaging or handling.

Abstract: In an aspect, in general, a loudspeaker element includes an enclosure, a cone diaphragm of a driver element located within the enclosure, a first cavity wall extending from the cone diaphragm of the driver element to a throat opening which has an area less than an area of the cone diaphragm and forming a first cavity within the enclosure, an exit element extending from the throat opening to an environment outside of the enclosure, and an impedance compensation element extending from the first cavity wall, the impedance compensation element including a second cavity wall which forms a second cavity within the enclosure and a resistance element separating the second cavity from the first cavity.