Rummler, Felix

A network configuration method performed by a user device and a network configuration method performed by a speaker device are provided. In this method, a Wi-Fi Direct connection is used for direct communication between speaker devices to form a Wi-Fi Direct group composed of all speaker devices, and a first speaker device is configured in the Wi-Fi Direct group as a group owner (GO) device to perform direct communication with the user device, where the direct communication employs a Bluetooth connection. Based on such a system design, the user device transmits network configuration information via the GO speaker device to other speaker devices for which network setup needs to be performed, for the other speaker devices to connect to a Wi-Fi network based on the network configuration information, thereby implementing a network configuration process for a plurality of speaker devices. The method can significantly improve the speaker network configuration efficiency, while the speaker devices further enjoy the convenience of joining or leaving the Wi-Fi Direct network at any time.

There is provided an electrical circuit that can serve as a building block for an impedance converter amplifier, particularly advantageous for use in a condenser microphone. The circuit topology comprises: a pair of transistors comprising a first transistor and a second transistor, wherein a first terminal of the first transistor is configured to connect to a first terminal of a third transistor and a first terminal of the second transistor is configured to connect to a first terminal of the fourth transistor, wherein the third and fourth transistors form a differential input pair, wherein a second terminal of the first transistor is connected to a second terminal of the second transistor; a first current source for providing a constant current stream, wherein the first current source is connected to the second terminal of the first transistor and the second terminal of the second transistor; a voltage follower, wherein an output terminal of the voltage follower is connected to the constant current stream, wherein a second terminal of the voltage follower is connected to a second terminal of the third transistor and a second terminal of the fourth transistor; and a voltage source for providing a voltage drop in the constant current stream, wherein the voltage source is connected between the output terminal of the voltage follower and the second terminals of the first and second transistors.

A computer-implemented method of determining a position, in particular a pose, of a platform, preferably an aircraft, the method comprising: receiving an input image of a portion of a surface, preferably the surface of the earth, the input image captured from a position of the platform; receiving a georeferenced reference representation of the portion; based on the reference representation, generating a synthetic image of the portion; determining a homography matrix between the synthetic image and the input image; and determining the position, in particular the pose of the platform based on the homography matrix.

An apparatus and a method for audio applications. The apparatus comprising a memory and a processor, the processor is configured to receive a first audio signal, receive metadata associated with the first audio signal, create a first profile associated with the first audio signal, the first profile comprising a plurality of adjustable audio parameters, and process the first audio signal with the plurality of adjustable audio parameters of the first profile. The processor is further configured to send the processed first audio signal with the first profile to one or more playback devices. The processor is further configured to receive, from one or more sensors, one or more first user inputs, analyse the one or more first user inputs, and adjust one or more of the plurality of audio parameters of the first profile based on the analysis, the metadata, or a combination of the analysis and the metadata. The processor is further configured to process the first audio signal with the adjusted first profile, and send the processed first audio signal with the adjusted first profile to the one or more channels.

In at least one embodiment, an audio system (100) including an audio arrangement (110), a power management circuit (106), and at least one controller (104) is provided. The audio arrangement (110) is programmed to transmit an audio output signal via at least one loudspeaker (130) in response to an audio input signal. The power management circuit (106) includes at least one first switch (107) being operably coupled to at least one battery (112). The power management circuit (106) is configured to transmit a voltage from the at least one battery (112) to the audio arrangement (110) to power the audio arrangement (110) to transmit the audio output signal. The at least one controller (104) is programmed to selectively activate the at least one first switch (107) to charge a capacitor (108) to a predetermined charge level to prevent an in-rush of current from being delivered to the electronics of the audio arrangement (110) while the at least one battery (112) experiences a fault condition.

Systems, apparatus, articles of manufacture, and methods to enable attachment of surface mounting technology (SMT) components of different sizes to an underlying substrate are disclosed. An example apparatus includes a circuit board; a first pad on the circuit board, the first pad to be electrically coupled to a first terminal of a surface mounting technology (SMT) component, the first pad having a first edge and a second edge opposite the first edge, the first edge shorter than the second edge; and a second pad on the circuit board, the second pad to be electrically coupled to a second terminal of the SMT component, the second pad having a third edge and a fourth edge opposite the third edge, the third edge shorter than the fourth edge.

A method of modifying an audio signal, a system comprising a processor operable to carry out the method, and a vehicle comprising a processor operable to carry out the method. The method comprising receiving an audio signal and extracting reverberation characteristics from the audio signal, the reverberation characteristics comprising a plurality of parameters. The method further comprising generating an artificial reverberation, the artificial reverberation comprising at least one of the parameters and applying the artificial reverberation to the audio signal. The method further comprising sending a modified audio signal to a plurality of speakers, the modified audio signal comprising the artificial reverberation applied to the audio signal.

A computer-implemented method of determining a position, in particular a pose, of a platform, preferably an aircraft, the method comprising: receiving an input image of a portion of a surface, preferably the surface of the earth, the input image captured from a position of the platform; receiving a georeferenced reference representation of the portion; based on the reference representation, generating a synthetic image of the portion; determining a homography matrix between the synthetic image and the input image; and determining the position, in particular the pose of the platform based on the homography matrix.

According to the present disclosure, there is provided a computer-implemented method for annotating an image for object detection, the method comprising: obtaining information indicative of a geographic, in particular geodetic position of at least one object; obtaining, from a camera, at least one image, wherein the image represents the object; determining a first position of the object in the image, based on the geographic position of the object; outputting, based on the determined first position, an image portion or a reference to an image portion representing the object; obtaining an input to generate, in the image portion, an annotation of the image, in particular a bounding box, wherein the annotation of the image is indicative of a second position of the object in the image; and matching the annotation to the geographic position of the object in the image.

A microphone hub and a method of operating one or more microphone hubs, The microphone hub including an input operable to receive one or more analog audio signals from one or more microphones, an audio network interface (ANIF), at least one analogue to digital converter (ADC) coupled to the input and to the ANIF, and a power system operable to provide power to the microphone hub. The ADC is operable to convert each of the one or more analog audio signals to one or more digital audio signals. The ADC is further operable to send the one or more digital audio signals to the ANIF.