|| List of recent Acoustic Wave-related patents
|Method and device for non-invasive acoustic stimulation of stem cells and progenitor cells in a patient|
The present invention provides a method for non-invasive acoustic stimulation of stem cells and/or progenitor cells in a patient. The invention also provides a device for non-invasive stimulation of stem cells and/or progenitor cells in the patient by generating and delivering acoustic waves of a suitable frequency and intensity to the stem cells and/or progenitor cells.
|Object information acquisition apparatus, object information acquisition system, display control method, display method, and program|
In a known apparatus, when a user defines a specified region in which characteristic information is to be acquired, it may be difficult for the user to easily recognize a corresponding scanning region that is to be actually scanned with a receiver. An embodiment of the invention provides an object information acquisition apparatus including a receiver configured to receive an acoustic wave and convert it into an electric signal, a scan control unit configured to scan the receiver at least in one direction, and a display control unit.
|Acoustic transducer apparatus, systems, and methods|
In some embodiments, apparatus and systems, as well as method and articles, may operate to launch acoustic waves along a first acoustic path length from an acoustic transducer toward an axis of rotation, to impinge on a first front surface of a target substantially fixed with respect to the axis, and to receive a reflection of the acoustic waves from the first front surface at the acoustic transducer. After rotating the acoustic transducer about the axis along a substantially circular path, additional activities may include launching acoustic waves along a second acoustic path length, different from the first acoustic path length, from the acoustic transducer toward the axis to impinge on a second front surface of the target, and receiving a reflection of the acoustic waves from the second front surface at the acoustic transducer.
|Full-parallax acousto-optic/electro-optic holographic video display|
A full-parallax acousto-optic/electro-optic holographic video display includes a control layer and a piezo-electric layer, which includes a substrate and an array of anisotropic waveguide elements. Each waveguide element guides light into a single polarization and includes a horizontal grating, which diffracts light horizontally and comprises surface acoustic waves, and vertical grating, which diffracts light vertically and includes an electro-optic phased array.
|Anisotropic leaky-mode modulator for holographic video displays|
An anisotropic spatial acousto-optic modulator for a holographic display system includes a substrate, an anisotropic waveguide that guides light into a single polarization, and a transducer that generates surface acoustic waves that propagate linearly with the guided, polarized light, converting at least some of the polarized light into a leaky mode of orthogonally polarized light. The acoustic waves may be encoded with holographic information.
|Volume wave resonator using excitation/detection of vibrations|
The resonating substrate is configured to generate, between its first surface and its second surface, longitudinal mode acoustic waves vibrating at the work frequency of the resonator, when an electrostatic field having a sinusoidal component at the work frequency is generated in the gap area by applying a differential voltage between the diaphragm or the first surface of the resonating substrate on the one hand and the internal electrode on the other hand.. .
|Object information acquiring apparatus and object information acquiring method|
An object information acquiring apparatus comprises a light source; an acoustic detecting unit configured to detect an acoustic wave generated from an object to which light from the light source is irradiated; and a processing unit configured to acquire characteristic information on the inside of the object based on the acoustic wave and correct the characteristic information using an absorption coefficient of a background region inside the object.. .
|Object information acquiring apparatus and method of controlling same|
Provided is an object information acquiring apparatus including a probe having a plurality of receiving elements that are arrayed along a first direction and receive an acoustic wave generated from an object irradiated with light from a light source and converting the acoustic wave into an electrical signal, a scanner that moves the probe in the first direction, a controller, and a generator that generates image data of inside of the object based on the electrical signal. The controller controls the apparatus such that light is emitted each time the probe is moved by a distance that is either (n+1/k) times or (n−1/k) times an array pitch between the receiving elements, where n is an integer of 1 or more and k is an integer of 2 or more..
|Sound discrimination method and apparatus|
A method of distinguishing sound sources includes the step of transforming data, collected by at least two transducers which each react to a characteristic of an acoustic wave, into signals for each transducer location. The transducers are separated by a distance of less than about 70 mm or greater than about 90 mm.
|Acousto-optic image capture device|
An acousto-optic image capture device includes: an acoustic wave source to irradiating an object with an acoustic wave; an acoustic lens system which transforms a scattered wave from the object into a plane acoustic wave; an acousto-optic medium portion which is arranged so that the scattered wave transmitted through the acoustic lens system is incident there; a light source to emit a light beam in which monochromatic rays of light with different traveling directions are superposed and which is incident on the acousto-optic medium portion; an imaging lens system which condenses diffracted rays of light of the plane wave monochromatic rays of light produced by the acousto-optic medium portion; and an image receiving member which detects the rays of light condensed by the imaging lens system to output an electrical signal. The acoustic lens system includes at least two reflecting mirrors..
|Hydraulic fracture monitoring using active seismic sources with receivers in the treatment well|
A method for obtaining information about a hydraulic fracturing operation in a fracture zone in a well, comprises a) providing at least one acoustic sensor in the well and at least one acoustic source, b) injecting fracturing fluid into the well so as to cause fractures in a fracture zone in the surrounding formation, c) using the acoustic source to send an acoustic signal and using the acoustic receiver to receive the signal, d) repeating step c) at least once, and e) processing the received signals using a microprocessor so as to obtain information about the fractures. The source may be at the earth's surface or in a second well.
|Object information acquiring apparatus and control method thereof|
Provided is an object information acquiring apparatus having: a light source; a probe that converts an acoustic wave generated from an object, onto which light is irradiated from the light source, into a detection signal; and a signal processor that obtains characteristic information inside the object based on the detection signal, wherein the signal processor obtains the characteristic information using information regarding a characteristic structure of a measurement target inside the object.. .
|Acoustic wave device|
An acoustic wave device includes a piezoelectric substrate, an interdigital transducer (idt) electrode provided on an upper surface of the piezoelectric substrate, a first dielectric film covering the upper surface of the piezoelectric substrate to cover the idt electrode, and a second dielectric film covering an upper surface of the first dielectric film. The second dielectric film includes a thin portion positioned in a tip region of electrode fingers of the idt electrode and a thick portion which is positioned in a middle region of the idt electrode and is thicker than the thin portion.
|Surface acoustic wave device, electronic apparatus, and sensor apparatus|
A saw device includes an idt which is provided on the principal surface of a quartz crystal substrate having euler angles (−1.5°≦φ≦1.5°, 117°≦θ≦142°, . .
|Network synthesis design of microwave acoustic wave filters|
A method of designing an acoustic microwave filter in accordance with frequency response requirements. The method comprises selecting an initial filter circuit structure including a plurality of circuit elements comprising at least one resonant element and at least one other reactive circuit element, selecting lossless circuit response variables based on the frequency response requirements, selecting a value for each of the circuit elements based on the selected circuit response variables to create an initial filter circuit design, transforming the resonant element(s) and the other reactive circuit element(s) of the initial filter circuit design into at least one acoustic resonator model to create an acoustic filter circuit design, adding parasitic effects to the acoustic filter circuit design to create a pre-optimized filter circuit design, optimizing the pre-optimized filter circuit design to create a final filter circuit design, and constructing the acoustic microwave filter based on the final filter circuit design..
|Methodology for the analysis of mslb and tsv acoustic transients in bwrs|
This invention relates to a new methodology to analyze the effects of the acoustic waves generated during accident or operational transients occurring in boiling water reactors (bwrs). These transients include the main steam line break (mslb) event and the turbine stop valve (tsv) operational transient.
|Ultrasonic surgical shears with clamping feature|
An apparatus for operating on tissue comprises a shaft, an acoustic waveguide, and an end effector. The acoustic waveguide extends along the shaft and is configured to transmit ultrasonic vibration.
|Photoacoustic monitoring technique|
Various methods and systems for photoacoustic patient monitoring are provided. A photoacoustic system includes a light emitting component that emits one or more wavelengths of light into an interrogation region of a patient and an acoustic detector that detects acoustic energy generated by the interrogation region of the patient in response to the emitted light.
|Imaging device for biomedical use|
An imaging system that includes a light source configured to project a beam of light within a determined range of wavelengths onto an illumination area of a patient's skin and a detector configured to detect acoustic waves within a scan area of the patient's skin without contacting the patient's skin, wherein the scan area does not overlap the illumination area. In certain embodiments, the beam of light is a series of pulses of coherent light and the detector is an interferometer..
|Border ring mode suppression in solidly-mounted bulk acoustic wave resonator|
Embodiments provide a solidly-mounted bulk acoustic wave (baw) resonator and method of making same. In embodiments, the baw resonator may include one or more extensions that are acoustical similar to active region components of the baw resonator.
|Method of making a cemented carbide or cermet body|
The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation.
|Acoustic waveguide for conference phone realtime communications|
In one embodiment, an apparatus includes a network interface, an acoustic waveguide, and an arrangement. The network interface is arranged to communicate on a network, and is further configured to obtain a signal from the network.
|Equal expansion rate symmetric acoustic transformer|
An acoustic transformer includes at least one outer boundary wall. A plurality of inner walls are disposed within the outer boundary wall.
|Multichannel audio calibration method and apparatus|
A method comprising: generating at least one audio signal to be output by at least one speaker for a multi-speaker system; receiving at least two output signals, the at least two output signals provided by at least two microphones and based on the at least one acoustic wave output by the at least one speaker in response to the at least one audio signal; determining a directional component associated with the at least two output signals; and comparing the directional component with an expected location of the at least one speaker.. .
|Transducer for acoustic communications|
There is disclosed herein a transducer for acoustic communications through a series arrangement of fluid and solid media, the transducer comprising: a signal processor configured to implement a communications scheme at and around a centre frequency of at least 1 mhz; a piezoelectric element for activation in accord with the communications scheme; an electrode electrically connected to the signal processor, and being attached to the piezoelectric element; and a substrate, having the piezoelectric element mounted thereon, wherein an aspect of the electrode at the piezoelectric element is approximately equal to the acoustic wavelength of an acoustic wave in the substrate at the centre frequency. There is further disclosed a remote monitoring device employing at least one of the transducers described, in concert with a further transducer.
|Three dimensional touch by acoustic waves|
The three-dimensional touch system by acoustic waves comprises of a plurality of sensors and their controllers. The three-dimensional touch system implements the any or a combination of three different sensing methods.
|Object information acquiring apparatus|
An object information acquiring apparatus including: a plurality of receiving elements receiving an acoustic wave propagating from an object and converting the acoustic wave into an electrical signal; a delaying unit aligning phases of electrical signals of m number of channels outputted from the plurality of receiving elements; an eliminator reducing the electrical signals of m number of channels to electrical signals of l number of channels; a calculator calculating nb number of output signals corresponding to low-frequency components of a complex signal based on the electrical signals outputted from the eliminator; and a signal processor performing beam formation according to adaptive signal processing using output signals outputted from the calculator, wherein positive integers m, l, and nb satisfy m>l>=2(nb−1).. .
|Seismic acquisition in marine environments using survey paths following a series of linked deviated paths and methods of use|
Methods and systems are provided for acquiring seismic data in a marine environment using survey paths following a series of linked curved paths so as to obtain multi-azimuthal data over a sub-surface target. Marine vessels towing multiple seismic streamers may be configured to travel substantially along a series of linked deviated paths or a series of linked curved paths.
|Carrier for mounting a piezoelectric device on a circuit board and method for mounting a piezoelectric device on a circuit board|
A carrier for mounting a piezoelectric device, e.g., a surface acoustic wave (saw) device, on a circuit board and a method of mounting a piezoelectric device on a circuit board using such a carrier are disclosed. The carrier includes a carrier bottom, a plurality of metal contacts, and a carrier lid attached to the carrier bottom.
|Acoustic touch apparatus and methods using touch sensitive lamb waves|
Systems and related methods providing for touch sensors using high sensitivity lamb waves are disclosed herein. A touch apparatus may include a substrate having a front surface and a back surface, where the touch region is on the front surface.
|Network synthesis design of microwave acoustic wave filters|
Methods for the design of microwave filters comprises comprising preferably the steps of inputting a first set of filter requirements, inputting a selection of circuit element types, inputting a selection of lossless circuit response variables, calculating normalized circuit element values based on the input parameters, and generate a first circuit, insert parasitic effects to the normalized circuit element values of the first circuit, and output at least the first circuit including the post-parasitic effect circuit values. Additional optional steps include: requirements to a normalized design space, performing an equivalent circuit transformation, unmapping the circuit to a real design space, performing a survey, and element removal optimization.
|Microwave acoustic wave filters|
An acoustic microwave filter comprises an input and an output, and a plurality of acoustic resonators coupled between the input and the output. The difference between the lowest resonant frequency and the highest resonant frequency of a plurality of resonators in the filter is at least 1.25 times the frequency separation of the resonator with the highest resonant frequency in the plurality of resonators.
|Acoustic artificial lift system for gas production well deliquification|
An acoustic artificial lift system and method for deliquification of gas production wells is provided. The artificial lift system comprises a down-hole acoustic tool suspended by a power conductive cable that converts electrical power to acoustic energy, thereby generating an acoustic wave.
|Portable sonic particle removal tool with a chemically controlled working fluid|
A particle removal tool having a sound field transducer, a cleaning chamber, and an open sealing face. The cleaning chamber having a cleaning fluid guiding chamber extending from the sound field transducer to the open sealing face, a cleaning fluid delivery channel in fluid communication with the cleaning fluid guiding chamber, and a cleaning fluid return channel.
|Ultrasonic flowmeter with integrally formed acoustic noise attenuating feature|
A flowmeter has a one-piece conduit with an outer surface and an inner surface that define a wall thickness therebetween, and first and second transducers, where each transducer is disposed external of or integral with the one-piece conduit, in signal communication with an interior volume of the one-piece conduit, and relative to each other such that each transducer can send and receive an acoustic signal to the other transducer. The one-piece conduit includes a plurality of acoustic noise attenuating features integrally formed with at least one of the outer surface and the inner surface and disposed between the first and second transducers, each of the features being configured and oriented to disturb a propagation direction of a parasitic acoustic wave that will propagate in the wall of the one-piece conduit in response to activation of at least one of the transducers..
|Object information acquiring apparatus and control method for the object information acquiring apparatus|
An object information acquiring apparatus that transmits an acoustic wave to an object, and receives and analyzes the reflected acoustic wave to acquire internal information of the object, comprises a probe that transmits and receives the acoustic wave; a holding member disposed between the object and the probe to hold the object; and an air bubble detection unit that detects an air bubble present between the object and the holding member on the basis of an intensity of the acoustic wave received after a first time from the transmission by the probe, the first time being calculated on the basis of a time when the acoustic wave reaches a predetermined distance.. .
|Method and system for structural integrity assessment|
The method includes dispensing an object at a portion of concrete, determining an impact time of the object on the portion of concrete, detecting at least one acoustic wave reflected from the portion of concrete, filtering the at least one acoustic wave, and identifying a defect in the portion of concrete based on the filtering.. .
|Method and apparatus for determining biofouling of a membrane|
A method of determining a state of biofouling of a membrane is provided. The membrane is contained within a flow cell and the flow cell has an outer surface coupled to a tranducer, the method comprises introducing inorganic particles into the flow cell such that the inorganic particles form a part of a top surface of a foulant layer on the membrane.
|Acoustic signal receiving apparatus and photo-acoustic tomography|
An acoustic signal receiving apparatus including: a fabry-perot sensor including a fabry-perot interferometer configured to convert an acoustic wave into a light intensity signal; a control unit configured to set a first wavelength and a second wavelength; a detecting unit configured to convert light intensities obtained by irradiation of the fabry-perot sensor with light from the first light source and the second light source into electric signals; and a signal processing unit configured to acquire a difference between an electric signal corresponding to the first wavelength and an electric signal corresponding to the second wavelength, wherein the control unit is configured to set the first wavelength and the second wavelength so that differential values of reflectivity spectrum of the fabry-perot sensor are different at the first wavelength and the second wavelength.. .
|Acoustic touch apparatus|
An improved acoustic touch apparatus that has a logo or application icon applied on the back surface of a propagating substrate which can be viewed through the substrate and an acoustic element situated adjacent the logo or application icon that can compensate for phase velocity shifts of surface acoustic waves in propagating over the logo or application icon.. .
|Method for the rapid interrogation of a passive sensor, in particular of the surface acoustic waves type, and system for measuring the unique frequency of such a sensor|
For passive sensor with resonator having a natural frequency, a method comprises: a first phase emission of an electromagnetic signal toward the passive sensor at an emission frequency, the resonator oscillating in a forced regime at the emission frequency and then oscillating at its natural frequency when the emission is cut off; a first phase reception of the damped signal oscillating at natural frequency emitted by passive sensor, a measurement of the frequency being performed; a second phase emission of an electromagnetic signal at the measured frequency toward the passive sensor, the resonator oscillating in a forced regime at the measured frequency and then oscillating at its natural frequency when the emission is cut off; a second phase reception of the damped signal oscillating at natural frequency, a measurement of the frequency being performed, determination of the natural frequency being stopped due to measurement performed in this second reception phase.. .
|Acoustic wave device|
Embodiments described herein may provide an acoustic wave device, a method of fabricating an acoustic wave device, and a system incorporating an acoustic wave device. The acoustic wave device may include a transducer disposed on a substrate, with a contact coupled with the transducer.
|Lids for spillproof container assemblies|
A spillproof container assembly includes a container body and a lid body that is adapted to be fastened onto the container body by screwing. Both the container body and the lid body are advantageously provided with outwardly extending wing portions for enhancing the grippability of and properly orienting the container assembly for small children.
|Detection circuit, driving method, probe, and subject information acquiring apparatus|
A detection circuit detects a signal output from an element that receives an acoustic wave. The detection circuit is configured so as not to conduct a detection operation during a period in which the element does not receive the acoustic wave..
|Detection of bioagents using a shear horizontal surface acoustic wave biosensor|
Viruses and other bioagents are of high medical and biodefense concern and their detection at concentrations well below the threshold necessary to cause health hazards continues to be a challenge with respect to sensitivity, specificity, and selectivity. Ideally, assays for accurate and real time detection of viral agents and other bioagents would not necessitate any pre-processing of the analyte, which would make them applicable for example to bodily fluids (blood, sputum) and man-made as well as naturally occurring bodies of water (pools, rivers).
|Device for repelling animals using acoustic waves|
A device for repelling animals using acoustic waves, comprising an acoustic wave generation unit (11); first and second frequency adjusting units (12, 13) to induce the generation of resonance of the pulse signal generated from the acoustic wave generation unit (11); an acoustic wave output unit (14) to output the acoustic wave; a resonance generation-type acoustic wave output unit (15) to output the acoustic wave; a resonance generation unit (16) which forms a space in which the acoustic wave outputted from the acoustic wave output unit (14) and the acoustic wave outputted from the resonance generation-type acoustic wave output unit (15) stay at the same time, and amplifies the volume and the frequencies by inducing resonance to be generated by mutual interference; and an acoustic wave diffusing unit (17) which diffuses the acoustic waves expanded by the resonance to a free space via an induction pathway.. .
|Subcutaneous dialysis catheter with ultrasound agitation|
A subcutaneous, venous catheter is provided in conjunction with a method of installation in hemodialysis treatments. The catheter has an implantable hub attached to a first end of the primary lumen.
|Medical vaporizer and method of monitoring of a medical vaporizer|
The present application includes an independent and redundant measurement of anesthetic concentration, based on acoustic time-of-flight measurements, added to an anesthetic vaporizer. The redundant anesthetic concentration measurement is used to make the vaporizer inherently safe by design and monitor true vaporizer empty.
|Self-powered slip plate to reduce skin-friction drag on a marine vessel|
An anti-friction slip plate for mounting on a hull of a marine vessel to reduce skin friction drag by acoustically generating microcavitation bubbles at a wetted area of the hull. The slip plate comprises a plate-like enclosure, an energy extraction mechanism to extract power from water current flowing along the hull when underway, a power generator driven by the energy extraction mechanism to produce electrical power, an acoustic signal generator powered by the power generator to produce an acoustic signal, and a series of transducers excited by the acoustic signal to effect emission of acoustic waves that produce cavitation bubbles in the wetted area.
|Object information acquiring apparatus and control method therefor|
An object information acquiring apparatus includes a probe configured to detect a photoacoustic wave generated from an object irradiated with light, a signal collector configured to generate a first detection signal from the photoacoustic wave, a signal processor configured to generate, from the first detection signal, a second detection signal in which a component having a phase inverted from the phase of a component deriving from the photoacoustic wave is reduced, by using a differential signal of an impulse response of the probe, and an image generator configured to generate image data on the inside of the object using the second detection signal.. .
|Method and device for well communication|
The present invention concerns a method and a well string element for transmitting data in a well. The well string element (20c) includes an elongated body (80) that defines a through channel (110) and also includes a side pocket (92) that is open to ambient (91); and an acoustic modem (60) provided in the pocket (92) and configured to emit acoustic waves.
|Temperature controlled acoustic resonator comprising heater and sense resistors|
A bulk acoustic wave (baw) resonator device comprises a heating cod disposed over a first side of the piezoelectric layer and substantially around a perimeter adjacent to the active area of the acoustic resonator, the heating coil comprising a resistor configured to receive a heater current; and a heat sensor disposed over a second side of the piezoelectric layer and opposing the first side, the heat sensor configured to adjust the heater current in response to a temperature of the heating coil.. .
|Acoustic wave device and electronic apparatus including same|
An acoustic wave device includes a piezoelectric substrate, an idt electrode including plural electrode fingers disposed above an upper surface of the piezoelectric substrate, a first dielectric film made of oxide disposed above the upper surface of the substrate for covering the electrode fingers, and a second dielectric film made of non-oxide disposed on upper surfaces of the electrode fingers and between the first dielectric film and each of the electrode fingers. The first dielectric film contacts the upper surface of the piezoelectric substrate at a position between electrode fingers out of the plural electrode fingers adjacent to each other.
|Device for handling objects, using acoustic force fields|
The invention relates to a device (1) intended for handling objects (o) present in a channel (2) within a fluid (f), in particular a liquid. The device comprises: a channel (2) extending along a longitudinal axis (x), said channel (2) having a transverse section with a width (_) measured along a first transverse axis (y) and a thickness measured along a second transverse axis (z) perpendicular to the first, said width (_) being greater than or equal to the thickness, and said channel comprising first (3) and second (4) walls along the second transverse axis (z); and an acoustic wave generator (10) generating acoustic waves in the channel from at least one of the walls (3; 4), said acoustic wave generator (10) operating at a frequency f that is different from a resonant frequency f0 of the channel (2) along the second transverse axis (z)..
|Microelectromechanical bulk acoustic wave devices and methods|
Micromachined gyroscopes, such as those based upon microelectromechanical systems (mems) have the potential to dominate the rate-sensor market mainly due to their small size, low power and low cost. As mems gyroscopes are resonant devices requiring active excitation it would be beneficial to improve the resonator q-factor reducing the electrical drive power requirements for the excitation circuitry.
|Directional ultrasound transmitting stylus|
A stylus that includes a tip portion that has a cavity. The cavity has a plurality of holes at a first end and a transmitter of acoustic, e.g., ultrasound waves at the end longitudinally opposite the first end.
|Surface acoustic wave device|
In a surface acoustic wave device, a plurality of surface acoustic wave elements include piezoelectric bodies having the same cut-angle. A propagation azimuth of a surface acoustic wave in at least one of surface acoustic wave elements is different from a propagation azimuth of a surface acoustic wave in at least another one of the surface acoustic wave elements.
|Acoustic resonator having temperature compensation|
An acoustic resonator structure comprises a substrate having an air cavity, an acoustic stack disposed over the substrate and comprising a piezoelectric material disposed between a first electrode and a second electrode, and an acoustic reflector disposed over the substrate and comprising a single pair of acoustic impedance layers configured to reflect acoustic waves produced by vibration of the acoustic stack, wherein at least one of the acoustic impedance layers comprises a temperature compensating material.. .
To provide a biosensor including a suctioning mechanism while using a detection element such as a surface acoustic wave device, included are: a first cover member 1 including an element-accommodating recess 5 on an upper face thereof; a detection element 3 including an element substrate 10, and at least one detection unit 13 located on the upper face of the element substrate 10 to perform detection of an analyte; and a second cover member 2 joined to the first cover member 1 and covering the detection element 3, and including an inflow port 14 from which the analyte flows in and a groove 15 extending from the inflow port 14 to at least above the detection unit.. .
|Analytic estimation apparatus, methods, and systems|
In some embodiments, apparatus and systems, as well as methods, may operate to record a plurality of acoustic waveforms corresponding to acoustic waves received at azimuthally orthogonal dipole receiver arrays surrounded by a geological formation, the waves being generated by azimuthally orthogonal transmitter arrays. Further activity may include analytically estimating a global minimum of a predefined objective function with respect to an azimuth angle at a point in an auxiliary parameter space associated with a set of auxiliary parameters, minimizing the objective function at the analytically estimated angle with respect to the auxiliary parameters, removing existing ambiguities associated with the fast and slow principal flexural wave axes, and determining at least one property of the geological formation based on the global minimum.
|Acoustic sensor apparatus, systems, and methods|
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to acquire multiple output values provided by at least one elongated, unitary acoustic sensor operating as a secondary propagation medium. The sensor has multiple mechanical-to-electrical conversion probe points along its length, to provide corresponding multiple output values proportional to mechanical movement along the length of the sensor, the mechanical movement being induced by acoustic waves in a primary propagation medium comprising a geological formation and borehole fluid.
|Acoustic layer in media device providing enhanced audio performance|
An acoustic layer is added to a laptop-type personal computing device, comprising: enclosing walls, optionally—one or more microphones, a signal processing device, at least one audio transducer, and an acoustic waveguide. The acoustic layer adjoins one or more internal areas of a laptop-type device.
|System and device for acoustic measuring in a medium|
A device for acoustic measuring in a medium in a borehole such as velocity of sound in the medium or velocity of the medium, includes at least a first acoustic array situated in a first, slanted sidewall of a measuring area and operating to emit a series of acoustic waveforms across a measuring area. In one form, the device includes a second acoustic array situated in a second, slanted sidewall of the measuring area and operating to receive an acoustic signal resulting from the emitted series of acoustic waveforms or to receive said acoustic signal and emit a second series of acoustic waveforms.
|Flip chip type saw band reject filter design|
A method and system for providing a surface acoustic wave band reject filter are disclosed. According to one aspect, a surface acoustic wave band reject filter includes a substrate having electrode bars and bonding pads formed on the substrate.
|Elastic wave splitter|
An elastic wave splitter includes an antenna terminal, a transmission terminal and reception terminals. A transmission filter is connected between the antenna terminal and the transmission terminal.
|Method for manufacturing a high-temperature ultrasonic transducer using a lithium niobate crystal brazed with gold and indium|
A process for manufacturing a high-temperature ultrasonic transducer, said transducer comprising a steel or metal top electrode, a piezoelectric converter, a steel or metal support ensuring the interface between the converter and the propagation medium of the acoustic waves, a first joint between the support and the piezoelectric crystal, and a second joint between the converter and the top electrode, comprises, to produce said gold-and-indium-based joints, a brazing and diffusing operation comprising the following steps: a first step of increasing temperature to a first temperature comprised between about 150° c. And about 400° c.
|System and method for detecting and locating a disturbance in a medium|
A system for detecting and locating a disturbance of a medium includes a medium for propagating bulk acoustic waves, a mechanism for emitting bulk acoustic waves in the medium, a mechanism for receiving the bulk acoustic waves after propagation thereof in the medium, configured to supply a reception signal from the acoustic waves received, and a mechanism for detecting and locating the disturbance in the medium from the reception signal. The medium includes a dermis layer of elastic material with a thickness locally deformable by the disturbance..
|Acoustic wave device and method of fabricating the same|
An acoustic wave device includes: a substrate; a functional element formed on the substrate and including an excitation electrode that excites an acoustic wave; a columnar electrode formed on the substrate and electrically connected to the excitation electrode; a metal frame body formed on the substrate and surrounding the functional element and the columnar electrode; and a ceramic substrate sealing the functional element in combination with the metal frame body, a first metal layer bonded to the columnar electrode and a second metal layer bonded to the metal frame body being formed on a surface of the ceramic substrate.. .