Abstract: An obstacle monitoring system includes a transducer that receives an ultrasonic echo from an obstacle and generates a signal based on the echo. The system further includes a controller coupled to the transducer that is calibrated based on a frequency response of the transducer and a coupling circuit. The system further includes circuitry generating a damping current, controlled by the controller, that reduces or eliminates reverberation of the transducer.

Abstract: For transducer connection to an integrated circuit, a silicon or other wafer-based chip is processed to provide signal routing, such as altering the pitch using wafer process deposited conductors. This chip or silicon interposer may be more simply re-designed to relate the pitch of an array to the integrated circuit I/Os, avoiding redesign of the integrated circuit.

Abstract: A method and a device perform data communication between a superordinate computer system of an ultrasonic measurement system and an associated ultrasonic sensor via a modified UART data interface. The method and device exit the UART protocol and use a special signaling protocol and a modification of the UART data interface for the duration of an ultrasonic measurement phase to transmit the arrival of echoes at the ultrasonic sensor promptly to the superordinate computer system and return to the UART protocol for the data transmission from the ultrasonic sensor to the superordinate computer system after the end of the ultrasonic measurement phase.

Abstract: A method, including receiving a first set of ultrasonic responses to first ultrasonic signals transmitted using one or more transducers; generating a confidence value based on a detection of a target value using the first set of ultrasonic responses; receiving a second set of ultrasonic responses to second ultrasonic signals transmitted using the one or more transducers; and updating the confidence value using the second set of ultrasonic responses.

Abstract: An electronic device, according to various embodiments, includes: an application processor including an audio processing module and a voice recognition module; a mic; a speaker; and a sensor hub. While the audio processing module included in the application processor is in a sleep state, the sensor hub generates an ultrasonic signal and provides the ultrasonic signal to the speaker so that the speaker outputs a first signal including the ultrasonic signal therethrough; receives, from the voice recognition module, a second signal inputted through the mic; and determines whether an object is near the electronic device, at least on the basis of the first signal and the second signal.

Abstract: Disclosed is a method comprising: receiving captured seismic data and generating first velocity and first pressure data therefrom; transforming, from a first data domain to a second data domain, the first velocity and first pressure data and thereby generate second velocity and second pressure data; mapping wavenumber gather data from the second data domain to a third data domain; determining envelope ratio scaling data and threshold value data using the second velocity and second pressure data; generating, threshold envelope data using a thresholding operator associated with the threshold value data; using coefficient data associated with the threshold envelope data to estimate vertical component data; transforming, from the third data domain to the first data domain, the vertical component data to generate temporal-spatial data; and generating, based on the temporal-spatial data, noise component data comprised in the captured seismic data.

Abstract: One or more systems, devices, computer-implemented methods and/or computer program products of use provided herein relate to ultrasound coexistence in an FMS. A system can comprise a memory that can store computer-executable components. The system can further comprise a processor that can execute the computer-executable components stored in the memory, wherein the computer-executable components can comprise a frequency generation component that can use a variable frequency generator circuitry to generate electronic signals at one or more different frequencies in at least one fetal sensor device (FSD) of a fetal monitoring system (FMS), wherein the electronic signals can cause a transducer of the at least one FSD to generate ultrasound signals at the one or more different frequencies.

Abstract: A passive compression wave imaging system for locating cavitation bubbles, the system comprising a plurality of sensor elements (202b) arranged in an array and each arranged to produce an output signal, and processing means (204a, 204b) arranged to: define a sample period, and a sample space over which the signal can be sampled at each of a plurality of sample points in the sample space; define a grid of candidate bubble positions; define a random projection identifying a respective different group of the sample points for each of the output signals; sample each of the output signals at the group of sample points defined by the random projection to generate sample data; define a dictionary which defines the sample values that would be obtained for the signal of each of the respective group of sensor elements at each of the sample points for the sample period for a bubble at each of the candidate bubble positions; define a vector the elements of which identify the candidate bubble positions; and perform a mini

Abstract: An optomechanical ultrasound detector includes: a micromirror substrate; a mechanical resonator that receives ultrasound waves, oscillates at resonator frequency fr, changes cavity length Lc, and produces intra-cavity light; and an optical microcavity between the micromirror substrate and the mechanical resonator with cavity length Lc and cavity resonance frequency fc formed by the mechanical resonator and the micromirror substrate, such that the micromirror substrate produces cavity output light from the intra-cavity light, wherein the cavity output light optically encodes information about the ultrasound waves received by the mechanical resonator.

Abstract: Certain aspects of the present disclosure provide a method for providing stacked multi-component seismic while drilling (SWD) seismic waveforms. The method includes obtaining multi-component SWD seismic pressure and shear waveforms associated with a planned well. The method includes pre-processing, at the at least one processor, the multi-component seismic SWD waveforms to generate an ordered subset of filtered SWD seismic waveforms and determining, based on a maximum eigenvalue associated with first and maximum correlation matrices of the pressure and shear waveform components, a number of the subset of filtered SWD seismic waveforms to stack. The method includes estimating a first arrival time (FAT) and sending the stacked number of filtered SWD seismic waveforms to a surface equipment, centered around the estimated FAT.

Abstract: A split aperture beamforming, reflection detection, beam segmentation, and point selection scheme for obtaining high resolution sonar images is disclosed. A sonar imaging device beamforms at a coarse horizontal and vertical resolution to create smaller signal data cuboids. Each beam is partitioned into segments based on direction of arrivals obtained through split aperture beamforming. Detected points in the cuboids are allocated to a beam segment and associated direction of arrival.

Abstract: A method of determining a rate of penetration of a drill bit using acoustic technology. The method comprises providing a drill string including a drill bit configured to drill through a subterranean formation in a wellbore and operably coupling an array of acoustic transducers to a member of the drill string. Acoustic waves are emitted toward a wall of the wellbore with at least one acoustic transducer and a frequency of the acoustic waves reflected from the wall of the wellbore are measured with at least one acoustic transducer. The array of acoustic transducers is operably coupled to a controller comprising a memory and a processor to determine a frequency shift between the emitted acoustic waves and the reflected acoustic waves. A rate of penetration of the drill bit is determined with the processor based at least in part on the frequency shift. Downhole acoustic systems for determining a rate of penetration of a drill string are also disclosed.

Abstract: The invention relates to an ultrasonic microscope for inspecting an object, comprising an object holder for holding the object in an object region; a scan head; a first transducer supported by the scan head and configured to emit first acoustic pulses along an emission direction, to focus the first acoustic pulses in a focal point, to detect second acoustic pulses emerging from the object and to output a first detection signal representing the second acoustic pulses detected by the first transducer; a first actuator configured to move the first transducer relative to the scan head along a vertical direction which is essentially parallel to the emission direction; and a controller configured to control the first actuator based on the first detection signal. Further, the invention relates to a carrier for carrying an acoustic pulse transducer of an ultrasonic microscope within an immersion liquid.

Abstract: An object detection device includes a transceiver configured to transmit/receive an ultrasonic wave; a drive signal generation unit configured to generate a drive signal for driving the transceiver; a transmitter circuit configured to cause the transceiver to transmit a probe wave, which is an ultrasonic wave, by driving the transceiver based on the drive signal; and a receiver circuit configured to generate a reception signal corresponding to a reception result of the ultrasonic wave of the transceiver, wherein the drive signal generation unit is configured to generate the drive signal so that frequency of the probe wave changes over time. The device further includes: a voltage measurement unit configured to measure a voltage signal generated in the transceiver while the transceiver transmits the probe wave with frequency changing over time; and a state determination unit configured to make a state determination regarding the transceiver based on the voltage signal.

Abstract: Systems and methods for generating low level configuration data from high level configuration data at a probe connector of an ultrasound probe are provided. The method includes receiving, from an ultrasound machine by at least one connector processor located in a probe connector of an ultrasound probe, high level configuration data. The method includes processing, by the at least one connector processor, the high level configuration data to generate low level configuration data. The method includes providing, by the at least one connector processor via a probe cable to at least one probe processor disposed in a housing of the ultrasound probe, the low level configuration data. The method includes causing, by the at least one probe processor, transducer elements of the ultrasound probe to transmit ultrasound beams and convert received echoes to ultrasound signals based on the low level configuration data.

Abstract: An ultrasonic generator and a method for repelling a mosquito in a vehicle using the same are provided. The ultrasonic generator may include a sensor device that is configured to sense a mosquito in a vehicle, an ultrasonic vibrator device that may be configured to output an ultrasonic signal for repelling the mosquito, and a controller that controls the ultrasonic vibrator device and controls a first window, chosen among a plurality of windows of the vehicle, to be opened such that the mosquito is repped out of the first window.

Abstract: Systems, devices and methods for mounting a transducer to a boat are described herein. The devices include a first mounting member that has a body and a coupling portion extending outwardly from the body. The coupling portion is configured to be directly or indirectly secured to a portion of the boat. The device also has a second mounting member movably coupled to the first mounting member. The second mounting member has a body configured to be directly or indirectly secured to the transducer. The device also includes a coupling assembly to movably couple the first mounting member to the second mounting member. The device is movable between a first operating position where the transducer is operable in a first mode when the transducer is secured to the device and a second operating position where the transducer is operable in a second mode when the transducer is secured to the device.

Abstract: A method of processing audio signals acquired by at least one microphone to locate a sound source in a space having a wall. The method includes applying a time-frequency transform to the acquired signals and expressing a general complex velocity vector with a real part and an imaginary part in the frequency domain. The vector has a denominator with a component other than an omnidirectional component and characterizes a composition between: a first acoustic path, direct between the source and the microphone, represented by a first vector, and a second acoustic path resulting from a reflection on the wall and represented by a second vector. The second path has a delay relative to the direct path. A direction of the direct path, a distance from the source to the microphone, and/or a distance from the source to the wall is determined as a function of the delay and the vectors.

Abstract: A method for determining the elevation angle and/or azimuth angle of a signal received by an ultrasound sensor includes: providing an ultrasound sensor with a frequency-dependent radiation pattern; transmitting a first ultrasound wave at a first frequency; transmitting a second ultrasound wave at a second frequency different from the first frequency; receiving reflections of the first and second waves, the reflections being caused by an object; and determining the elevation angle of the first and second reflected waves based on amplitudes of the reflections of the first and second waves. Determining the elevation angle (and/or azimuth angle includes calculating a ratio between the amplitudes of received reflections of the first and second waves and mapping a calculated ratio to an elevation angle and/or azimuth angle. The mapping is based on a predetermined ratio curve or ratio dataset which associates a certain amplitude ratio to an elevation angle and/or azimuth angle.

Abstract: A method is provided to measure the complex sensitivity of hydrophone data channels across a range of frequencies by using a water-filled tank with proximate boundaries. A hydrophone array and reference hydrophone are helically affixed to a test fixture resting on a rotation platform. When the test fixture is submerged in the tank; the platform rotates about a contour of the platform in intervals for a predetermined time interval before indexing to the next angle. Signals transmitted by an acoustic projector in the tank are received on the hydrophones of the line array and the calibrated reference hydrophone. Electrical signals from the reference hydrophone are transmitted over an electrical cable and received by the acoustic data processor for use in calibrating the hydrophone line array. Electrical signals from the hydrophones of the hydrophone line array are also transmitted to the data processor.