Abstract: Embodiments of systems and methods are described for determining which of a plurality of beamformed audio signals to select for signal processing. In some embodiments, a plurality of audio input signals are received from a microphone array comprising a plurality of microphones. A plurality of beamformed audio signals are determined based on the plurality of input audio signals, the beamformed audio signals comprising a direction. A plurality of signal features may be determined for each beamformed audio signal. Smoothed features may be determined for each beamformed audio signal based on at least a portion of the plurality of signal features. The beamformed audio signal corresponding to the maximum smoothed feature may be selected for further processing.

Abstract: A computer-implemented method and computer system are proposed which suggest a multi-destination travel itinerary to a user, who is typically a payment card holder. The itinerary is generated using information about earlier multi-destination journeys made by the user and other payment card holders, as identified based on payment transaction data relating to payment transactions made by the card holders. The other payment card holders may be ones having payment transaction characteristics similar to the user, and the suggested travel itinerary may be selected to have properties consistent with previous journeys the user has made.

Abstract: Sound is banked laterally over an array of microphones arranged on a rear surface of a device. Sound enters a duct behind the device from different directions via inlets along the sides of the device. The duct directs the sound waves across the microphone array. An effective direction from which the banked sounds originated is determined, relative to a front of the device. Based on the determined effective direction, the device applies spatial filtering to isolate the received sound waves, selectively increasing a signal-to-noise ratio of sound from the selected source and at least partially occluding sounds from other sources.

Abstract: The present disclosure relates to solid dispersion of amorphous empagliflozin and its process thereof.

Abstract: A system with at least one device including a hardware processor, performs the steps of receiving, by the system, a packet from a second system to be transmitted to a third system, forwarding, by the system to the third system, the packet received from the second system; modifying a portion of the packet to obtain a modified packet that falsely identifies a fourth system as a source of the modified packet, and transmitting, by the system to the third system, the modified packet identifying the fourth system as the source of the modified packet.

Abstract: A multi-channel acoustic echo cancellation (AEC) system that includes a step-size controller that dynamically determines a step-size value for each channel and each tone index on a frame-by-frame basis. The system determines the step-size value based on a normalized squared cross-correlation (NSCC) between an estimated echo signal and an error signal, allowing the AEC system to converge quickly when an acoustic room response changes while providing stable steady-state error by avoiding misadjustments due to noise sensitivity and/or near-end speech. The step-size value can be determined using fractional weighting that takes into account a signal strength of each channel.

Abstract: In a speech-based system, a wake word or other trigger expression is used to preface user speech that is intended as a command. The system receives multiple directional audio signals, each of which emphasizes sound from a different direction. The signals are monitored and analyzed to detect the directions of interfering audio sources such as televisions or other types of electronic audio players. One of the directional signals having the strongest presence of speech is selected to be monitored for the trigger expression. If the directional signal corresponds to the direction of an interfering audio source, a more strict standard is used to detect the trigger expression. In addition, the directional audio signal having the second strongest presence of speech may also be monitored to detect the trigger expression.

Abstract: A switch module and optoelectronic switch incorporating the same. The optoelectronic switch includes an N-dimensional array of switch modules arranged in a topology in which each switch module is a member of N sub-arrays, the sub-arrays defined with reference to the coordinates of the constituent switch modules, and wherein all of the members of each sub-array are connected by an active switch, which in some embodiments may be an optical active switch or an electronic active switch.

Abstract: Features are disclosed for filtering portions of an output audio signal in order to improve automatic speech recognition on an input signal which may include a representation of the output signal. A signal that includes audio content can be received, and a frequency or band of frequencies can be selected to be filtered from the signal. The frequency band may correspond to a desired frequency band for speech recognition. An input signal can be obtained comprising audio data corresponding to a user utterance and presentation of the output signal. Automatic speech recognition can be performed on the input signal. In some cases, an acoustic model trained for use with such frequency band filtering may be used to perform speech recognition.

Abstract: The systems, devices, and processes described herein may identify a beam of a voice-controlled device that is directed toward a reflective surface, such as a wall. The beams may be created by a beamformer. An acoustic echo canceller (AEC) may create filter coefficients for a reference sound. The filter coefficients may be analyzed to identify beams that include multiple peaks. The multiple peaks may indicate presence of one or more reflective surfaces. Using the amplitude and the time delay between the peaks, the device may determine that it is close to a reflective surface in a direction of the beam.

Abstract: A decision engine executing on an electronic device may determine, using sensor data captured by multiple sensors of the device, whether a user is present in an environment that includes the device. If the user is determined to be present in the environment, the device may transition from a first state to a second state. The first state may be a first power state of the device in which the device is powered off or an idle or dormant state in which the device is powered on but a display of the device is powered off. Correspondingly, the second state may be a second power state of the device in which the device and the display are powered on and content is being rendered on the display. If the decision engine cannot make a determination based on the sensor data, a context engine may adjudicate the user presence determination.

Abstract: An optoelectronic device. The optoelectronic device operable to provide a PAM-N modulated output, the device comprising: M optical modulators, M being an integer greater than 1, the M optical modulators being arranged in a cascade, the device being configured to operate in N distinct transmittance states, as a PAM-N modulator, wherein, in each transmittance state of the N distinct transmittance states, each of the M optical modulators has applied to it a respective control voltage equal to one of: a first voltage or a second voltage.

Abstract: An L-dimensional optoelectronic switch for transferring an optical signal from an input device to an output device, the optoelectronic switch includes: a plurality of leaf switches, each having a radix R, and arranged in an L-dimensional array, in which each dimension has a respective size R, (1=1, 2, . . . , L), each leaf switch having an associated L-tuple of co-ordinates (x1, . . .

Abstract: Method and system for providing a housing recommendation to a user. The method comprising: determining, using a recommendation module, a spending behaviour of the user based on transaction data relating to electronic payment transactions involving the user; dividing, using the recommendation module communicatively coupled with a geographic information system (GIS), a geographical area into a plurality of localities based on geographic information from the GIS; determining, using the recommendation module, an average spending behaviour of residents in each locality based on transaction data relating to electronic payment transactions involving the residents; assigning, using the recommendation module, a base score to each locality based on a presence of residents in the locality with similar spending behaviour to the user; and transmitting, to a user output module communicatively coupled with the recommendation module, the housing recommendation that is based on the base score of each locality.

Abstract: Techniques described herein may be used to expeditiously provide web content to user devices. A web server may provide a first webpage to a user device. Prior to the user device requesting another webpage (e.g., while the user of the user device is viewing the first webpage), the server device may identify a second webpage that the user device is likely to request next and obtain content corresponding to the second webpage. The web server may receive a request for the second webpage, and in response to the request, may provide the second webpage, along with the content, to the user device. The content may include information that is not typically cached by the web server. Additionally, the web server may verify that there are adequate system resources available (e.g., processing capacity, memory capacity, etc.) prior to obtaining the content.

Abstract: The embodiments relate to an automatic capacity detection system and methods thereof. The system includes a capacity detector for continuously monitoring an area to track an available amount of capacity; a location sensor for automatically identifying a current location at which the available amount of capacity is available; a processor in remote communication with the capacity detector and the location sensor to: compare the current location of the available amount of capacity with a destination of the available amount of capacity; estimate a remaining value of the available amount of capacity based on the comparison; and assign at least some of the available amount of capacity at the remaining value to an offering party.

Abstract: Embodiments of systems and methods are described for determining weighting coefficients based at least in part on using convex optimization subject to one or more constraints to approximate a three-dimensional beampattern. In some implementations, the approximated three-dimensional beampattern comprises a main lobe that includes a look direction for which waveforms detected by a sensor array are not suppressed and a side lobe that includes other directions for which waveforms detected by the microphone array are suppressed. The one or more constraints can include a constraint that suppression of waveforms received by the sensor array from the side lobe are greater than a threshold. In some implementations, the threshold can be dependent on at least one of an angular direction of the waveform and a frequency of the waveform.

Abstract: A switch module and optoelectronic switch incorporating the same. The optoelectronic switch includes an N-dimensional array of switch modules arranged in a topology in which each switch module is a member of N sub-arrays, the sub-arrays defined with reference to the coordinates of the constituent switch modules, and wherein all of the members of each sub-array are connected by an active switch, which in some embodiments may be an optical active switch or an electronic active switch.

Abstract: Disclosed is method that includes processing the past registered interest data against the past purchase data to identify past purchases resulting from registered past interest so as to determine a period between each of the identified past purchases and the registered past interest; deriving parameters, from one or more of the determined periods, for a prediction algorithm configured to forecast the interval between the interest registered for the particular good or service and purchase of the particular good or service; processing, using the prediction algorithm, present data of interest registered on one or more goods or services that are related to the particular good or service to calculate an estimate of the interval between the registered present interest and the purchase of the particular good or service; and planning the product related activities in response to the estimated interval. Related apparatus and a non-transitory computer readable medium are also disclosed.

Abstract: An echo path change detector may be used to control the rate of adaptation in an acoustic echo canceller. When echo path change is declared, the rate of adaptation may be increased. However, echo path change should not be declared in the presence of double talk, because rapid adaptation during double talk is undesirable. Accordingly, various features are disclosed for detecting echo path changes while avoiding the declaration of such changes in the presence of double talk.