Abstract: A device that includes a first beam selection component that selects a portion of the multiple beams prior to performing adaptive noise cancellation, in addition to a second beam selection component that selects a beam after adaptive noise cancellation is performed. The device only performs adaptive noise cancellation on the portion of the multiple beams that are selected, reducing a complexity of performing adaptive noise cancellation. In addition, as the first beam selection component selects from the multiple beams before adaptive noise cancellation, the quality of the signals are not reduced and/or desired signals are not suppressed, resulting in the first beam selection component increasing a likelihood that the second beam selection component selects the desired beam. The first beam selection component may use a different algorithm and/or selection criteria than the second beam selection component in order to select beams associated with desired signals such as speech.

Abstract: A split-band compression circuit includes first stage filters, split-band limiters, and second stage filters. The first stage filters are configured to receive and filter an input signal to output first split-band signals. The split-band limiters are coupled to the first stage filters respectively, and configured to perform compression on the first split-band signals to output second split-band signals. The second stage filters are coupled to the split-band limiters respectively, and configured to filter corresponding second split-band signals to output output signals. The first stage filter and the second stage filter corresponding to the same split-band limiter have different cut-off frequencies respectively.

Abstract: Method for user micro context recognition using sound signatures. The method includes: recording an environment sound sample from a microphone into a mobile device by a trigger stimulus; simultaneous to recording an environment sound sample, collecting hardware and software macro context data from available mobile devices; extracting a sound signature from the recorded sound sample based on sound features and spectrograms; comparing for similar patterns the recorded sound signature with reference sound signatures stored in a sound database; updating the sound database; checking if the recorded sound was recognized; performing a logical association between the sound label and the available macro context data; comparing for similar patterns the recorded context with a reference context stored in a context database; updating the context database; checking if the micro context was recognized; and returning to a mobile context-aware application the micro context label.

Abstract: In a system and method for video communications, a user in an observation zone views a display image rendered on a vertically oriented screen through a two-way mirror in front of the screen. The two-way mirror is vertically angled at substantially 45 degrees, and reflects a part of a side wall in the observation zone. The backdrop for the light-emitting portion of the display image is provided by the reflection that is superimposed by the two-way mirror onto the non-light-emitting portion of the display image. The backdrop provides the light-emitting portion of the display image with a depth relationship that is observable when the user views the display image along a line of vision that extends straight through the two-way mirror to the screen behind the two-way mirror. A camera embedded in the side wall captures video of the user that is reflected by the two-way mirror from the observation zone back into the camera.

Abstract: Systems and methods to calibrate listening devices are disclosed herein. In some embodiments, a method to calibrate earphones includes determining a Head Related Transfer Functions (HRTF) corresponding to different parts of a user's anatomy (e.g., one or both of a listener's pinnae). The resulting HRTFs are combined to form a composite HRTF. In some embodiments, a first and a second HRTF are respectively determined for a first and second part of the user's anatomy. A composite HRTF of the user is generated by combining portions of the first and second HRTFs.

Abstract: A method for estimating a time at which a pressure window relevant observation occurred relating to an event that occurred in an open borehole penetrating an earth formation includes: receiving with a processor a pressure window relevant observation that provides input to adjusting a pressure window for drilling fluid for drilling the borehole; and estimating with the processor a time window in which a physical parameter, a chemical parameter, or a process that caused the pressure window relevant observation to occur, the time window having a start time and an end time.

Abstract: A microphone device including a first sound receiving module and a second sound receiving module is provided. The first sound receiving module includes a first output terminal and receives a sound signal to output a first electronic signal through the first output terminal. The second sound receiving module, which disposed adjacent to the first sound receiving module to receive the sound signal, includes a second output terminal and outputs a second electronic signal through the second output terminal accordingly. The first output terminal of the first sound receiving module is coupled to the second output terminal of the second sound receiving module, and the phase of the first electronic signal and the phase of the second electronic signal are inverse to each other.

Abstract: In some embodiments, provide apparatuses and methods to estimate unload states. Some of these embodiments include system to monitor unloading of product delivery vehicles, comprising: an audio detector; an audio evaluation circuit configured to: receive the audio signals captured by the audio detector; and identify when the audio signal includes one or more audio signatures corresponding to one or more distinct predefined audio signatures that correspond to movements of products relative to unloading products; and a control circuit coupled with the audio evaluation circuit and configured to estimate at a given time a state of unloading of a load of products intended for the shopping facility as a function of the identifying that one or more of the audio signals include one or more audio signatures corresponding to the one or more predefined audio signatures that correspond to movements of products relative to unloading.

Abstract: A device that determines an echo latency estimate by combining reference signals. The device may determine the echo latency corresponding to an amount of time between reference signals being sent to transmitters and input data corresponding to the reference signals being received. The device may generate a combined reference signal by adding (or filtering) each of the reference signals. The device may then compare the combined reference signal to input audio data received from a microphone or receiving device. The device may detect a highest peak, determine if there are any earlier significant peaks and estimate the echo latency based on the earliest significant peak. This technique is not limited to audio data and may be used for signal matching using any system that includes multiple transmitters and receivers (e.g., Radar, Sonar, etc.).

Abstract: Audio and or video data is structurally and persistently associated with auxiliary sensor data (e.g., relating to acceleration, orientation or tilt) through use of a unitary data object, such as a modified MPEG file or data stream. In this form, different rendering devices can employ co-conveyed sensor data to alter the audio or video content. Such use of the sensor data may be personalized to different users, e.g., through preference data. For example, accelerometer data can be associated with video data, allowing some users to view a shake-stabilized version of a video, and other users to view the video with such motion artifacts undisturbed. In like fashion, camera parameters, such as focal plane distance, can be co-conveyed with audio/video content—allowing the volume to be diminished (or not, again depending on user preference) when a camera captures audio/video from a distant subject. Some arrangements employ multiple image sensors and/or multiple audio sensors—each also collecting auxiliary data.

Abstract: A detection apparatus includes a first acquisition part that acquires information about a suppliable electric power of a power supply apparatus that supplies an electric power to a power reception apparatus via a transmission path; a second acquisition part that acquires information about a supply electric power output from the power supply apparatus, including information about a supply voltage output from power supply apparatus; a third acquisition part that acquires information about a voltage applied to the power reception apparatus after a voltage drop in the transmission path; and a margin information calculation part that calculates first margin information about a margin of a supply electric power, and calculates second margin information about a margin of the voltage drop.

Abstract: A method of synchronizing one or more wirelessly received audio signals with an acoustically received audio signal is provided. The method comprises: receiving an electromagnetic signal using a first wireless communication method, the electromagnetic signal comprising: the one or more wirelessly received audio signals and a wirelessly received metadata relating to a remote audio content, determining a delay between the acoustically received audio signal and the one or more wirelessly received audio signals by referring the acoustically received audio signal to the wirelessly received metadata; and delaying the one or more audio signals by the determined delay. A device and system for performing the method are also provided.

Abstract: Apparatus and methods for altering the appearance of wearable device are disclosed. The apparatus may statically or dynamically alter the appearance of the wearable.

Abstract: An audio mixing system for providing an audio processing interface at a mobile device may include a mobile device including an interface configured to present a display screen to receive user input to control a remote audio mixer that is operably coupled to at least one musical instrument, transmit, via a wireless network, a mobile device command indicating an audio setting, the command being generated in response to user input, receive, via the wireless network and in response to the mobile device command, first mixer data indicative of audio settings of the remote audio mixer, and present an updated display screen, the updated display screen reflecting the first mixer data as a result of the mobile device command to present a real-time display of the audio settings of the remote audio mixer.

Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving, at a first acoustic device, a representation of an audio signal, and amplifying the representation of the audio signal by a first gain factor to generate an amplified input signal. The method also includes processing the amplified input signal by an audio codec that includes one or more processors to generate a processed signal that represents a portion of the audio signal to be output by a second acoustic device. The processed signal includes noise originating at the audio codec. The method further includes transmitting the processed signal to the second acoustic device.

Abstract: A method and apparatus for processing audio content is described. The method and apparatus include receiving (510) audio content, the audio content including an input audio signal, a first reference audio signal, and a second reference audio signal, determining (550) a processing function for the input audio signal, the processing function determined based on a cost function between the input audio signal, the first reference audio signal and a second reference audio signal, and processing (560) the input audio signal using the determined processing function in order to produce an output audio signal.

Abstract: A system includes an encoder to monitor a machine and generate an encoder output signal indicative of at least one of the motion or position of the machine. A combiner can be configured to receive the encoder output signal from the encoder and to receive machine diagnostic data from at least one other sensor. The combiner can combine the machine diagnostic data with the encoder output signal to provide a combined signal that includes the machine diagnostic data synchronized with the at least one of the motion or position of the machine. An output stage can provide the combined signal to a remote system.

Abstract: A signal processing system and a method thereof are disclosed, using a differential amplifier to extract the sensed signals associated with the headphones wear status generated by the diaphragm of the headphone and push back to the sense ADC for digitization. Because the differential amplifier is non-ideal, certain residual music signal will exist. To exclude residual music signal for subsequent processing, a temporary memory is provided to match and synchronize the original playback signal retainment and the round-trip delay of external signal. The round-trip delay is computed to adjust the depth and clock speed of the buffer/FIFO of the temporary memory to, after synchronized with the total external propagation delay, eliminate residual music signal in a function block in order to separate the sense signal of the headphone driver unit diaphragm displacement and use the extracted sense signal for subsequent analysis and auto-control and/or signal compensation reference source.

Abstract: A MEMS microphone is disclosed. The MEMS microphone includes an encapsulation structure provided with an accommodation space; a MEMS chip for detecting sound signal accommodated in the accommodation space; an ASIC chip received in the accommodation space. The ASIC chip includes a signal processing module connected to MEMS chip for processing the sound signal detected by the MEMS chip and outputting the processed sound signal. The MEMS microphone further includes a temperature detection module for detecting temperature signal and outputting the temperature signal.

Abstract: A Pipe Mapping Probe Apparatus for Searching Pipe Route Position includes: a first disc fitted and fastened on a shaft member thread-fastened to the inner side of a connection shaft at a first side of an internal body of a first pig; a cap coupled to a side of the shaft member outside the first disc; a first pig coupled to the shaft member; elastic members composed of three flexible springs coupled to a second side of an external body of the first pig; a cable that electrically connects a battery, a sensor unit, and a control board of the first pig and an encoder of a second pig, is connected with the battery through a first cable socket coupled to the external body of the first pig, and is connected to an encoder through a second cable socket disposed at the center of the second plate coupled to a first side of the second pig and through an encoder socket on the top of the encoder disposed in an internal body of the second pig; the second pig coupled to second sides of the elastic members at the first side o