Abstract: Systems and methods for noise reduction are provided including operations for noisy speech signals, such as speech signals that are subject to speech processing, speech recognition and speech transmission for voice communication purposes. In one embodiment, a system for noise suppression includes an input smoothing filter to smooth magnitudes of the input spectrum, a desired noise shape determination block configured to determine a desired noise shape of the noise spectrum dependent on the smoothed-magnitude input spectrum, and a suppression factors determination block configured to determine a set of suppression factors based on the desired noise shape and the smoothed-magnitude input spectrum. In one embodiment, a filter coefficient determination block is configured to determine noise suppression filter coefficients from the desired noise shape of the noise spectrum. Embodiments are also directed to systems and methods for noise reduction.

Abstract: Embodiments are disclosed for systems for a vehicle. An example system for a vehicle includes a central unit and an input device, wherein the central unit has a first interface for connecting to a first mobile device and a second interface for connecting to a second mobile device, wherein the central unit is configured to assign the first mobile device to a driver and the second mobile device to a passenger in the vehicle, wherein the central unit is configured to output information on a call directed to the first mobile device, wherein the central unit is configured to detect an input by means of the input device during the outputting of information, and wherein the central unit is configured, based on the detection of the input, to redirect the call to the second mobile device.

Abstract: In one embodiment, a layer application generates navigation-related data based on observations associated with vehicles. In operation, the layer application generates an attribute based on a first observation associated with a vehicle and an observation type. The layer application then compares the attribute to an existing road database to generate a dynamic layer. Subsequently, the layer application causes the dynamic layer to be transmitted to a navigation subsystem. After receiving the dynamic layer, the navigation subsystem performs navigation operation(s) based on the road database and the dynamic layer. Because the layer application may receive and operate on real-time observations, providers of road databases may produce dynamic layers at a frequency that enables navigation applications to continually provide accurate navigation data.

Abstract: The present invention provides a method and system with a plurality of voice command devices, wherein each of the voice command devices comprises a processor unit, a transceiver coupled to the processor unit and configured to couple to a network, one or more microphones, each configured to capture an audio signal, and at least one loudspeaker, and wherein the processor unit is configured to detect a speech signal in the captured audio signals; upon detection of a speech signal, transmit directivity information with respect to the one or more microphones to a software as a service, SaaS, provider via the network using the transceiver; and receive directivity information with respect to the plurality of voice command devices from the SaaS provider via the network using the transceiver.

Abstract: Multi-channel audio signal processing includes receiving a left stereo audio signal from a first channel and a right stereo audio signal from a second channel; up-mixing the left and the right stereo audio signals to generate an up-mixed audio signal for a third channel; de-correlating the up-mixed audio signal from the left and the right stereo audio signals to generate a de-correlated up-mixed audio signal; providing the left and right stereo signals and the de-correlated up-mixed audio signal to first, second, and third loudspeakers respectively to generate first, second, and third sound signals, respectively; picking up the first, second and third sound signals with a microphone to generate a microphone output signal; and adaptively filtering the microphone output signal with an acoustic echo canceller based on the left, the right, and the de-correlated up-mixed audio signal to generate an echo compensated microphone signal.

Abstract: A band steering method for a wireless network comprising access points, for example legacy access points, is disclosed. The network comprises a first and second radio bands, the wireless access point, and one or more client devices. The method comprises receiving an open authentication request at the wireless access point from the client device on one or more of its radio bands. If the open authentication request is received on the second radio band, the method comprises generating an open authentication response, whereas if the open authentication request is received only on the first radio band, the method comprises generating a delayed open authentication response.

Abstract: A method and a system for reducing the environmental pollution due to a transport route, wherein the transport route contains at least one transport means, a transport material, and a route, is characterized in that an environmental account is provided, on which environmental units are managed, in that a transport route causes costs in the form of a number of environmental units and these costs are deducted from the environmental account, and in that a transport route is selected in dependence on the costs.

Abstract: A loudspeaker assembly includes L loudspeakers, each being substantially the same size and having a peripheral front surface, and an enclosure having a hollow cylindrical body and end closures, the cylindrical body and end closures being made of material that is impervious to air. The cylindrical body comprises L openings therein. The L openings are sized and shaped to correspond with the peripheral front surfaces of the L loudspeakers, and have central axes. The central axes of the L openings are contained in a radial plane, and the angles between adjacent axes are identical. The L loudspeakers are disposed in the L openings and hermetically secured to the cylindrical body. L is equal to or greater than 2. A higher-order loudspeaker system comprising such a loudspeaker assembly and a beamforming module.

Abstract: A microphone assembly includes a printed circuit board that defines a tab that is configured to extend into an opening defined by a substrate layer of a headliner. The microphone assembly includes a microphone element mounted on the tab. The microphone assembly includes a sealing element that surrounds the tab and the microphone element and is configured to fill the opening and define an air path from a cabin side of the substrate layer to the printed circuit board or the microphone element.

Abstract: A headphone arrangement includes an ear cup configured to be arranged to at least partly surround an ear of a user to define an at least partly enclosed volume about the ear of the user. The ear cup includes an at least partially hollow frame configured to at least partially enframe the ear of the user when the ear cup is arranged to surround the ear of the user. The frame includes a first cavity, the first cavity being formed by wall portions of the frame. The headphone arrangement includes at least one loudspeaker arranged within wall portions of the first cavity. The wall portions of the first cavity form a first waveguide configured to guide sound radiated from the loudspeaker through a waveguide output of the first waveguide. The waveguide output of the first waveguide includes one or more openings in the first cavity.

Abstract: Exemplary engine order and road noise control systems and methods include directly picking up road noise from a structural element of a vehicle to generate a first sense signal representative of the road noise, detecting harmonics of an engine of the vehicle to generate a second sense signal representative of the engine harmonics, and combining the first sense signal and the second sense signal to provide a combination signal representing the combination of the first sense signal and the second sense signal. The systems and methods further include broadband active noise control filtering to generate a filtered combination signal, and converting the filtered combination signal from the active noise control filtering into anti-noise and radiating the anti-noise to a listening position in an interior of the vehicle. The filtered combination signal is configured so that the anti-noise reduces the road noise and engine sound at the listening position.

Abstract: Canceling acoustic echoes includes picking up with a microphone sound generated by a sound source and transferred from the sound source to the microphone via an unknown transfer path having an unknown transfer function, and providing an electrical microphone signal therefrom. It further includes approximating the unknown transfer function with an estimated transfer function of an adaptive filter and filtering an electrical signal representative of the sound generated by the sound source with the estimated transfer function to provide an estimated signal therefrom, the adaptive filter having an adaptive adaptation step size. It further includes filtering a difference signal, which is the difference between the microphone signal and the estimated signal, with a post filter transfer function of an adaptive post filter.

Abstract: A map fusing method includes receiving a source graph and a target graph. The source graph is representative of a source map and the target graph is representative of a target map and includes nodes and edges that connect the nodes. The method further includes processing each of the source graph and the target graph in a graph convolutional layer to provide graph convolutional layer outputs related to the source graph and to the target graph, processing each of the graph convolutional layer outputs for the source graph and the target graph in a linear rectifying layer to output node feature maps related to the source graph and the target graph. The method further includes selecting pairs of node representations from the node feature maps related to the source graph and the target graph and concatenating the selected pairs to output selected and concatenated pairs of node representations.

Abstract: Active noise control systems and methods are disclosed that include generating with a first sub-system, anti-noise that is configured to reduce or cancel noise occurring at a listening position. Generating with a second sub-system, anti-noise that is configured to reduce or cancel noise occurring at the listening position. The first active noise control sub-system has a higher robustness than the second active noise control sub-system.

Abstract: The present disclosure provides methods and systems for homogenizing a low frequency listening experience for users in a plurality of locations, such as a plurality of seat positions in a vehicle. An example audio system includes a plurality of woofers configured to output low frequency sound into a listening environment to yield a homogeneous low frequency sound field. Homogeneity of the low frequency sound field in this case is for example spectrally uniform throughout an extended listening space.

Abstract: Sound capturing which includes applying a far-field microphone functionality to a multiplicity of first microphone signals to provide a first output signal, and applying a less directional microphone functionality to one or more second microphone signals to provide a second output signal.

Abstract: A method for adapting a gain of at least one channel audio input signal in order to generate an N channel audio output signal, wherein at least one channel audio input signal includes a speech input channel, in which speech signal components, if present in the at least one channel audio input signal, are present, and comprising other audio input channels. A perceived loudness of the at least one channel audio input signal is dynamically determined and it is determined whether speech signal components are present in the speech input channel. If this is the case the gain of the speech input channel is adapted differently compared to the gain of the other audio input channels.

Abstract: Sound reduction includes producing an error signal representative of sound present in a target space, producing a reference signal corresponding to undesired sound present in the target space, and producing, based on the reference signal and the error signal a cancelling signal representative of the undesired sound present in the target space. Sound reduction further includes producing, based on the cancelling signal, sound to destructively interfere with the undesired sound present in the target space, producing sound based on an audio signal in the target space, and removing from the reference signal, based on the audio signal, a reference signal component representative of audio signal components transferred via a feedback path from the transducer to the reference sensor.

Abstract: A loudspeaker assembly for a vehicle includes an enclosure arranged to be positioned outside of a passenger compartment of the vehicle adjacent a first vehicle body panel. The enclosure has a front side, a rear side, a top portion and a substantially enclosed bottom portion, where the top portion includes an outer wall structure. A loudspeaker is mounted in the enclosure and configured to generate an acoustic signal to be radiated into the passenger compartment through an opening in a second vehicle body panel. The enclosure may include a plurality of ribs extending between the loudspeaker and the outer wall structure. A barrier may be disposed within the top portion inward of the outer wall structure and substantially surrounding the loudspeaker. The ribs and the barrier damp high frequencies to reduce propagation of high-frequency noise toward the passenger compartment.

Abstract: A system and method for adaptive beamforming, which is configured to process at least two input signals and to provide an output signal, wherein a first input signal of the at least two input signals includes a desired signal as a main component and a second input signal of the at least two input signals, include an undesired signal as main component, includes adaptive error processing the second input signal and at least one of the first input signal and the output signal to provide an estimated undesired signal representative of an estimate of undesired signal components included in the first input signal, and taking the difference between the estimated undesired signal and the first input signal to provide the output signal.