| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073645000 | Acoustic parameter | 44 |
| 20100154550 | Railroad locomotive horn testing system and method - A system and method of testing the horn of a railroad locomotive wherein a fixed sensing station and a movable sensing station are provided adjacent a railroad track such that front and rear sensing of the horn decibels occurs simultaneously. | 06-24-2010 |
| 20110265573 | APPARATUS FOR DETERMINING AND/OR MONITORING ( ) PRESSURE - An apparatus for determining and/or monitoring pressure. The apparatus comprises at least one pressure transducer, which transduces pressure into an electrical signal. The invention includes the features that at least one acoustic sensor is provided, that the acoustic sensor registers acoustic signals and transduces such into electrical signals, and that the acoustic sensor is mechanically and/or acoustically coupled with the pressure transducer. | 11-03-2011 |
| 20120090396 | ACOUSTIC SENSOR SYSTEM, ACOUSTIC SIGNATURE SIMULATOR, AND ELECTRICAL DISTRIBUTION SYSTEM - An acoustic sensor system includes a first plurality of acoustic sensors, and an acoustic transmitter structured to generate acoustic noise to mimic acoustic noise induced by an electrical conductivity fault. A smaller second number of acoustic sensors of the first plurality of acoustic sensors are structured to identify a plurality of locations in an electrical distribution system having a plurality of electrical joints, in order that the smaller second number of acoustic sensors can monitor the plurality of electrical joints of the electrical distribution system. | 04-19-2012 |
| 20120167691 | METHOD FOR RECORDING AND REPRODUCING PRESSURE WAVES COMPRISING DIRECT QUANTIFICATION - In a method for recording and reproducing pressure wave signals, a wave pressure recording and an analog digital converter are to be linked. Higher dynamics are to be effected at identical bit depths and lower bit depths are to be required for identical dynamics. All information provided by the pressure wave signal is calculated and stored on the basis of detected and directly quantified wave pressure differences of the pressure wave signal. In addition, coefficients can be stored and, if necessary, retransformed into absolute wave pressures. In this way, the pressure wave signal can be reproduced. | 07-05-2012 |
| 20120216619 | DEVICE FOR MEASURING SOUND SOURCE DISTRIBUTION IN THREE-DIMENSIONAL SPACE - A device for measuring a sound source distribution in three-dimensional space is provided in which tracer particles included in a steady flow around an object ( | 08-30-2012 |
| 20120234096 | METHOD AND APPARATUS FOR CHECKING AN ACOUSTIC TEST FIXTURE - A body has a first portion whose exterior surface is similar to that of a corresponding, first portion of a portable media device. An acoustic aperture is formed at a location that is similar to that of a built-in earpiece, speaker, or microphone aperture in the media device. An acoustic port is formed in the exterior surface of the body, and is adapted to be coupled to a sound test tool. An internal cavity acoustically couples the acoustic port to the acoustic aperture. Other embodiments are also described and claimed. | 09-20-2012 |
| 20120291556 | Long Baseline Navigation System - An acoustic navigation system includes a vessel and an interrogation unit towed behind the vessel below the surface of the water, a tail acoustic transponder trailing behind the interrogation unit, and a pair of surface acoustic transponders towed behind the vessel on the surface of the body of water. The interrogation unit generates an acoustic interrogation signal and receives responses from each of the tail acoustic transponder and the surface acoustic transponders from which it triangulates its position. The surface acoustic transponders may further include GPS receivers for receiving positioning information from GPS satellites. Additional acoustic transponders on instruments located on the floor of the body of water respond to the interrogation signal to allow triangulation of the location of the instruments. | 11-22-2012 |
| 20130036823 | DIGITAL SAMPLING AND ZERO CROSSING OF ACOUSTIC SIGNALS OF ANIMALS - A method and apparatus for measuring frequency and amplitude of an input signal representative of an echolocation call. In one example, a system includes a combination of a digital sampling channel and a zero crossing measurement channel that are configured to simultaneously measure the echolocation call and produce a combined, time-synchronous data set representative of the echolocation call. | 02-14-2013 |
| 20130118261 | ACOUSTIC STRUCTURAL INTEGRITY MONITORING SYSTEM AND METHOD - Each of a plurality of acoustic sensors (acoustically coupled to a structure for monitoring) is connected to a network bus system via a preamplifier for capturing, processing and reporting acoustic events in a structure, for example aircraft structures. Each of the preamplifiers processes the acoustic event signals received from the sensors when an acoustic emission resulting from an acoustic event (defect in a structure, impact on the structure etc), and passes digital processed signal data relating to the detected acoustic event to a Remote Data Concentrator over the network for collation. The collated data is then stored and/or further processed (at a later time or in near real-time) to determine the source and/or location of detected acoustic emissions in the structure. | 05-16-2013 |
| 20130160556 | ACOUSTIC SENSORS FOR DETECTING SHOOTER LOCATIONS FROM AN AIRCRAFT - The systems and methods described herein include an acoustic sensor having piezoelectric material housed in a cartridge and sealed with a solid nonporous stainless steel cover. The systems include additional elements to tune the performance of the acoustic sensor for measuring shockwaves on the surface of an aircraft, such as a helicopter. In particular, the system includes several vibration isolating elements including foam pads and O-rings disposed between the cartridge and the cover for isolating the piezoelectric material from aircraft vibration and turbulence. Additionally, the systems and methods include circuitry for converting analog electrical signals generated by the piezoelectric material, in response to acoustic signals, to digital electrical signals. | 06-27-2013 |
| 20130319121 | Distributed Acoustic Sensing - This application describes methods and apparatus for distributed acoustic sensing providing enhanced sensitivity for certain acoustic signals. The method uses a fibre optic distributed acoustic sensing (DAS) apparatus ( | 12-05-2013 |
| 20140020470 | TIGHTNESS MEASURING APPARATUS AND MEASURING METHOD - According to a method by a frequency analysis of tap tones at the time when a tightness of a ripple member fixed by an elastic force has been tapped by a hammer or a method of detecting a response at the time when the ripple member has been vibrated, an enough precision cannot be obtained for a tightness estimation. A tapping force is applied to a plurality of positions on the member surface, thereby allowing a plurality of tap tones to be generated. Feature amounts are obtained from the plurality of tap tones. An average feature amount is obtained by averaging the feature amounts. The tightness of the ripple member is estimated from the average feature amount by using a correlation between the tightness of the ripple member and the average feature amount. | 01-23-2014 |
| 20140053650 | ACOUSTIC SENSOR - A method of designing and manufacturing an acoustic sensor having a high degree of directivity is disclosed. The sensor includes a rotatable plate that is attached to a substrate with mounts. In one aspect the mounts are freely rotatable and the torque on the plate is measured using detectors disposed on springs that provide a resistance to rotation of the plate. In another aspect the plate is mounted to the substrate with mounts that torsionally deform during rotation of the plate. These detectors measure the torque on the plate according to the torsional deformation of the mounts. Methods of improving the signal to noise ratio of acoustic sensors having multiple detectors are also disclosed. | 02-27-2014 |
| 20140230557 | SENSOR WITH VACUUM-SEALED CAVITY - A method and apparatus for detecting underwater sounds is disclosed. An embodiment of the apparatus includes a substrate with a vacuum-sealed cavity. A support structure and an acoustic pressure sensor are situated on the substrate. The support structure of the apparatus may include a first oxide layer situated on the substrate, a silicon layer situated on the first oxide layer, and a second oxide layer situated on the silicon layer. The acoustic pressure sensor of the apparatus includes a first electrode layer situated on the substrate, a piezoelectric layer situated on the first electrode layer, and a second electrode layer situated on the piezoelectric layer. In one embodiment, the surface area of the second electrode layer is between about 70 to 90 percent of the surface area of the piezoelectric layer. In various embodiments, the support structure is thicker than the piezoelectric layer. | 08-21-2014 |
| 20140260634 | METHOD AND APPARATUS FOR MONITORING WIND TURBINE BLADES DURING OPERATION - A wind power turbine blade inspection system includes a sensor positioned on the blade root end bulkhead to receive airborne acoustic signals emanating from anomalies in rotating turbine blades during cyclic stress loading, a three axis accelerometer to determine the gravity vector and other sources of cyclic acceleration with respect to the acoustic signals and a signal analysis system configured to analyze the sensor and accelerometer signals to provide data for wind power asset management. | 09-18-2014 |
| 20140260635 | Impact and Sound Analysis for Golf Equipment - Golf performance and equipment characteristics may be determined by analyzing the impact between a golf ball and an impacting surface. In some examples, the impacting surface may be a golf club face. The impact between the golf ball and the surface may be measured based on sound and/or motion sensors (e.g., gyroscopes, accelerometers, etc.). Based on motion and/or sound data, various equipment-related information including golf ball compression, club head speed and impact location may be derived. Such information and/or other types of data may be conveyed to a user to help improve performance, aid in selecting golf equipment and/or to insure quality of golfing products. | 09-18-2014 |
| 20140305221 | Surface Acoustic Wave Sensor - A surface acoustic wave sensor of the invention includes: a piezo element that propagates a surface acoustic wave; an electrode that carries out conversion of an electrical signal and a surface acoustic wave; and a porous base member into which liquid infiltrates and which comes into contact with the piezo element. | 10-16-2014 |
| 20150047433 | PHOTOACOUSTIC WAVE MEASUREMENT DEVICE, METHOD, PROGRAM, AND RECORDING MEDIUM - A photoacoustic wave measurement device includes: (a) a pulsed-light outputter that outputs a pulsed light; (b) an arrangement member disposed between a pulsed-light output end of the pulsed-light outputter and a measurement object, the arrangement member being adapted to allow the pulsed light to pass therethrough; and (c) a photoacoustic wave detector that receives a photoacoustic wave generated by the measurement object by the pulsed light and that converts the photoacoustic wave into an electric signal, the photoacoustic wave measurement device being adapted to receive the electric signal from a photoacoustic wave sensor in which the photoacoustic wave detector is farther from the measurement object than the pulsed-light output end. The photoacoustic wave measurement device further includes: an electric signal recording section that receives and records the electric signal from the photoacoustic wave sensor; a noise timing estimation section that estimates timing of occurrence of noise in the electric signal, from a thickness of the arrangement member; and a noise removal section that removes the electric signal at the timing estimated, from contents recorded by the electric signal recording section. | 02-19-2015 |
| 20150362362 | MICROELECTROMECHANICAL SYSTEMS SENSOR CONTROL INTERFACE - Microelectromechanical (MEMS) sensors and control interfaces, control, interface components, protocols, systems, and methods are described. An exemplary control interface can comprise one or more predefined symbols that facilitate control of a MEMS sensor over an existing pin of a package comprising one or more MEMS sensors. Provided implementations described read/write protocols that enable reading and/or writing internal registers associated with MEMS sensors and/or other electronic components or portions thereof. Embodiments of the subject disclosure can provide flexible and reusable control interfaces for MEMS sensors and associated protocols. | 12-17-2015 |
| 20160025592 | BEARING TEST APPARATUS FOR TESTING DURABILITY OF BEARING - A bearing test apparatus has a bearing cap coupled to an outer ring of a bearing to be tested (a “test bearing”), a driving rotary shaft coupled to an inner ring of the test bearing to rotate the inner ring, and a bearing torque meter for measuring a single torque of the test bearing, wherein an extension bar is formed at the bearing cap to protrude thereon, wherein the bearing torque meter includes a measurement rod configured to contact the extension bar and be fixed to support the extension bar in a direction opposite to a rotating direction of the driving rotary shaft, and a power sensor for measuring a force applied to the measurement rod, wherein the single torque of the test bearing is calculated based on a distance from the driving rotary shaft to the measurement rod and a force applied to the measurement rod. | 01-28-2016 |
| 20160069840 | METHODS AND SYSTEMS TO IDENTIFY AND MANAGE RECYCLABLE MATERIALS - A method to identify and manage recyclable materials provides a recyclable material with a quartz crystal identification element configured to oscillate at a predetermined frequency associated with the recyclable material. A mobile device detects the oscillation frequency of the quartz crystal, identifies the recyclable material based on the detected oscillation frequency, and sends that information to a controller. | 03-10-2016 |
| 20160091362 | AIRCRAFT FLIGHT CHARACTERISTIC MEASUREMENT - A method and device of measuring external flight characteristics of aircraft, including fixed-wing, rotorcraft, and Unmanned Aerial Vehicles, utilizes one or more floating platforms, each supporting one or more measuring instruments. The floating platform may be a hot air balloon, dirigible or other quasi-neutrally-buoyant airship, untethered to avoid interference between the aircraft being measured and any tether. Measurement of rotorcraft acoustic characteristics is particularly enhanced by permitting measurements that account for directionality of noise sources and are not affected by wind or reflected noise. | 03-31-2016 |
| 20160103039 | SINGLE DYNAMIC PRESSURE SENSOR BASED FLAME MONITORING OF A GAS TURBINE COMBUSTOR - The state of a flame in a gas turbine combustor is acoustically monitored using a single dynamic pressure sensor within the combustor. A dynamic pressure sensor output signal is received from the single sensor and is processed to determine a flame status. The signal is processed by performing an autocorrelation operation to identify time-separated portions of the signal and to determine that the time-separated portions of the signal include portions indicative of acoustic oscillations emitted by the flame in the gas turbine engine combustor and received directly by the single acoustic sensor, and portions indicative of reflections. | 04-14-2016 |
| 20160138967 | METHOD OF DETERMINING NOISE SOUND CONTRIBUTIONS OF NOISE SOURCES OF A MOTORIZED VEHICLE - The present invention relates to a method and an acoustic measurement system for determining individual noise sound contributions of a plurality of physical noise sources of a motorized vehicle at a target or reference location. The method comprises steps of placing a plurality of reference microphones at respective reference positions adjacent to respective ones of the physical noise sources, placing a measurement microphone at the target location, recording a plurality of noise sound signals and recording a target noise signal. The plurality of noise sound signals are adaptively separated using blind source separation to produce a plurality of mutually independent noise sound signals representing respective estimated noise sound signals of the plurality of physical noise sources. Each of the mutually independent noise sound signals is correlated with the recorded target noise signal to determine time domain or frequency domain characteristics of a plurality of linear transfer path filters representing respective transfer functions between the plurality of independent noise sound signals and the measurement microphone at the target location. At least one of the independent noise sound signals, representing one of the physical noise sources, may be applied to the corresponding linear transfer path filter to generate at least one target noise signal component representing the individual noise sound contribution of the physical noise source at the target location. | 05-19-2016 |
| 073646000 | Amplitude, power, or intensity | 20 |
| 20090188322 | Sound Measuring Device - A device for measuring, documenting, and issuing citations for noise violations comprises a mobile device for measuring the decibel sound level from a sound source, for measuring the distance from the device to the source, for capturing an image or video of the sound source, and determining whether the sound source exceeds a user-predetermined level. The device may be in the form of a hand-held gun-shaped device wherein the user actuates the trigger to record an image or video of the sound source, the decibel sound level, and the distance between the device and the source. After the data is collected, the sound-measuring device is attached to a download component. The download component accepts data from the sound-measuring component and allows the user to input additional data regarding the noise violation. The user may then use the download component to print a citation, which may include an image of the sound source. | 07-30-2009 |
| 20100170345 | Elastic wave measurement apparatus and method - The elastic wave measurement apparatus, when a high-frequency burst signal is input to the first ball SAW device, an input destination of the high-frequency burst signal is switched in sequence to another one of the ball SAW devices before a detection time at which an output signal from the first ball SAW device is detected, and at and after the detection time, output signals of the response characteristics of those ball SAW devices from the first ball SAW device to the last ball SAW device are detected in sequence. | 07-08-2010 |
| 20120036935 | METHOD OF ESTIMATING ACOUSTIC OR THERMAL LEAKGE OF AN OBJECT AND METHOD OF ESTIMATING TRANSMISSION LOSS OF AN OBJECT, USING A SOUND FOCUSING MECHANISM - A sound focusing mechanism for generating a focused source of sound, which can be used to identify the transmission loss of an object or identify areas of acoustic or thermal leakage is disclosed. The sound focusing mechanism includes a housing having at least one wall formed from a material having high sound insulating properties. A sound generating device for generating a sound is located with a central cavity within the housing. An actuator assembly is operatively connected to the sound generating device for selectively operating the sound generating device for selectively operating the sound generating device. The wall is configured to limit the transmission of the sound there through such that a focused beam or pulse sound is emitted from the mechanism through the opening. | 02-16-2012 |
| 20120167692 | ENERGY INTENSITY TRANSFORMATION - Apparatus, systems, and methods may operate to receive incident energy within a chamber defining a first part of an interaction volume that attenuates the incident energy as a function of path length to provide attenuated energy. Additional activity may include simultaneously transforming the attenuated energy characterized by a substantially exponential intensity function into resultant energy characterized by a substantially polynomial intensity function. The transformation may be accomplished using an interacted energy transformation element that defines a second part of the interaction volume, the transformation element operating to intercept the attenuated energy along a plurality of path lengths. Other activity may include transmitting the resultant energy to a receiver. Additional apparatus, systems, and methods are disclosed. | 07-05-2012 |
| 20130025373 | Method And Apparatus For Measuring Amount Of Material Removed From Target In Pulsed Laser Ablation - A method for measuring the amount of material removed from a target in pulsed laser ablation is provided. The method includes generating a laser beam with a laser generator for ablating the target; driving the laser generator with a delay generator; acquiring the acoustic signal generated when the target is being ablated by the laser beam and generating an electrical signal accordingly with a microphone; amplifying the electrical signal generated by the microphone with a pre-amplifier; displaying an acoustic waveform indicating the intensity of the acoustic signal generated when the target is being ablated by the laser beam with a digital oscilloscope connected to the delay generator and the pre-amplifier; and deducing the amount of material removed from the target in the pulsed laser ablation according to the acoustic waveform in real time. An apparatus for performing the method is also provided. | 01-31-2013 |
| 20140251016 | AUDIO DETECTION OF MEDIUM JAM - A method of indicating a medium jam along a medium transport path comprising one or more rollers for use in conveying the medium along the medium transport path; a microphone for detecting the sound of the medium being conveyed and producing a signal representing the sound; a processor for producing sound values from the signal and computing a moving window sum responsive to the sound values; computing a high amplitude count responsive to the sound values; and computing a post roller sum responsive to the sound values; and indicating the medium jam responsive to the moving window sum, high amplitude count, or post roller sum. | 09-11-2014 |
| 20140260636 | Impact and Sound Analysis for Golf Equipment - Golf performance and equipment characteristics may be determined by analyzing the impact between a golf ball and an impacting surface. In some examples, the impacting surface may be a golf club face. The impact between the golf ball and the surface may be measured based on sound and/or motion sensors (e.g., gyroscopes, accelerometers, etc.). Based on motion and/or sound data, various equipment-related information including golf ball compression, club head speed and impact location may be derived. Such information and/or other types of data may be conveyed to a user to help improve performance, aid in selecting golf equipment and/or to insure quality of golfing products. | 09-18-2014 |
| 20140260637 | Impact and Sound Analysis for Golf Equipment - Golf performance and equipment characteristics may be determined by analyzing the impact between a golf ball and an impacting surface. In some examples, the impacting surface may be a golf club face. The impact between the golf ball and the surface may be measured based on sound and/or motion sensors (e.g., gyroscopes, accelerometers, etc.). Based on motion and/or sound data, various equipment-related information including golf ball compression, club head speed and impact location may be derived. Such information and/or other types of data may be conveyed to a user to help improve performance, aid in selecting golf equipment and/or to insure quality of golfing products. | 09-18-2014 |
| 20140360275 | SELF-ADJUSTING AUDIO DETECTION OF MEDIUM JAM - A method of indicating a medium misfeed along a medium transport path comprising one or more rollers for conveying the medium along the medium transport path; a microphone for detecting the sound of the conveyed medium and producing a signal representing the sound; a processor for producing sound values from the signal; providing a sensitivity setting responsive to the sound values; and indicating the medium misfeed responsive to the sound values and the sensitivity setting. | 12-11-2014 |
| 20150143912 | APPARATUS FOR NONDESTRUCTIVE CRACK INSPECTION - According to the present invention, it is possible to determine a defect on a product caused in a pressing process by applying a predetermined acoustic signal to an object to be inspected and then sensing propagation of the applied signal, and it is possible to improve inspection performance, using an acoustic sensor capable of sensing sounds in an audible band and a sound collector that collects sounds and prevents noise. Further, it is possible to prevent defective panels from being put into the following process line by inspecting panels produced in a panel production line. | 05-28-2015 |
| 20150362361 | METHOD OF ESTIMATING PATH(S) OF ACOUSTIC OR THERMAL LEAKAGE OF AN OBJECT AND METHOD OF ESTIMATING PATH(S) OF TRANSMISSION LOSS OF AN OBJECT, USING A SOUND FOCUSING MECHANISM - A sound focusing mechanism for generating a focused source of sound provides for identifying a transmission loss of an object, areas of acoustic or thermal leakage within or acoustic flanking paths associated with the object. The sound focusing mechanism includes a housing having at least one wall formed from a material having high sound transmission loss properties. A sound generating device for generating a sound is located with a central cavity within the housing. An actuator assembly is operatively connected to the sound generating device for selectively operating the sound generating. The sound focusing mechanism is used in a method of determining the sound transmission loss and flanking paths of an object, as well as thermal loss. | 12-17-2015 |
| 073647000 | Current generating or modifying | 9 |
| 20090272192 | METHOD AND SYSTEM FOR PREDICTING LONG-TERM EXPOSURE TO A HAZARDOUS ENVIRONMENT - Certain embodiments of the present invention provide a system and method for predicting long-term exposure to a hazardous environment based on a user-controllable measurement interval of short duration. In an embodiment, the system includes an electronic circuit for receiving one or more signals representative of the level of a hazard in an environment using one or more of a hazard level sensor and a direct input jack. The system further includes a processor within the electronic circuit for determining an accumulated dose over a user-controllable measurement interval. In addition, the processor predicts hazardous exposure for a user-settable extended period greater than the user-controllable measurement interval and based on the accumulated dose. The dosimeter also includes a user-operable switch within the electronic circuit and in communication with the processor for controlling the user-controllable measurement interval to be less than a nominal measurement interval. | 11-05-2009 |
| 20110056299 | Method and System for an Ultra Low Power Dosimeter - Certain embodiments of the invention may be found in an ultra low power dosimeter assembly. The ultra low power dosimeter assembly may comprise a low power voltage source and a table circuit. The table circuit may be adapted to convert an input voltage to a second voltage level. The second voltage level may correspond to noise dose. The ultra low power dosimeter assembly may also comprise a switch adapted to trigger a control circuit. The control circuit may provide progressive attenuation of an output signal as the second voltage level increases. In certain embodiments, the control circuit may also be adapted to send one or more warning signals to a user of the ultra low power dosimeter. The one or more warning signals may be sent when the control circuit determines the second voltage level has reached one or more pre-determined threshold voltage levels. | 03-10-2011 |
| 20110283800 | Method for determining porosity, pore size and zeta potential of porous bodies - Propagation of ultrasound through a porous body saturated with liquid generates electric response. This electro-acoustic effect is called “seismoelectric current”, whereas reverse version, when electric field is driving force, is “electroseismic current”. It is possible to measure seismoelectric current with existing electro-acoustic devices, which had been designed for characterizing liquid dispersions. Such versatility allows calibration of said devise using dispersion and then applying it for characterizing porous body. In general, magnitude of seismoelectric current depends on porosity, pore size, zeta potential of pore surfaces and elastic properties of matrix. It is possible to adjust conductivity of liquid for simplifying these dependences. For instance, liquid with high ionic strength causes double layers become thin comparing to the pore size, which eliminates dependence of said currents on pore size. We suggest using such case for characterizing porosity. Magnitude of the said currents is proportional to zeta potential. This parameter can be calculated when porosity is known. In contrary, saturation of porous body with low conducting liquid leads to complete overlap of double layers, which can be used for characterizing pore size. Phase of the said currents can be used for determining iso-electric point because it rotates 180 degrees when liquid composition varies through this point. | 11-24-2011 |
| 20120174676 | Systems and Methods for Acquiring and Characterizing Time Varying Signals of Interest - A sensor system responsive to acoustic or seismic signals. One system includes a frame and a piezo-electric sensor element. The sensor element, responsive to a wavefield of seismic or acoustic energy, is positioned about the frame. Coupling between the sensor element and the frame is so limited as to render direct coupling of the sensor element with the wavefield the predominant means for stimulating the sensor element with seismic energy. Another system includes a frame and a cable element, responsive to a seismic or acoustic wavefield, extending about the frame. Coupling between the cable element and frame is so limited as to render direct coupling of the sensor element with the wavefield the predominant means for stimulating the sensor element with acoustic or seismic energy. The element may be coaxial cable or have piezo-electric properties to generate a charge differential measurable as a voltage between conductors. | 07-12-2012 |
| 20130263668 | ACOUSTIC PROBE AND ACOUSTIC DIAGNOSTIC SYSTEM INCLUDING THE SAME - An acoustic probe and an acoustic diagnostic system. The acoustic probe includes a housing; a transducer, which is arranged inside the housing, transmits an acoustic wave to a target object, and receives an acoustic echo signal from the target object; and a magnetic field generator, which is arranged inside the housing and generates a magnetic field to the target object. | 10-10-2013 |
| 20130269442 | Method for Determining Pore Size and Pore Size Distribution of Porous Material Using Phase of Electro-Acoustic Signal - A method of determining pore size of a porous material. The method includes saturating the porous material with a conducting liquid. Measuring, with an electro-acoustic device, a phase of the seismo-electric or electro-seismic signal at a single frequency or multiple frequencies. Calculating an average pore size from the measured phase of the seismo-electric or electro-seismic signal at single frequency using a theory that takes into account the hydrodynamic relaxation of the conducting liquid inside of the pores of the porous material. Calculating pore size distribution from the similar measurement conducted at multiple frequencies using the same theory. | 10-17-2013 |
| 20140260638 | AUTOMATED FAULT LOCALIZATION IN PIPELINES AND ELECTRICAL POWER TRANSMISSION LINES - Methods and apparatus for determining an estimated physical location of a fault in a pipeline or electrical transmission line using localization devices coupled thereto. In an embodiment, a first and second localization device each generate time values representing times when the respective localization device detected the fault. The estimated fault location is calculated, by one of the localization devices or a separate computing device, based upon the reported time values. In some embodiments, the calculation is further based upon characteristics of the pipeline or electrical transmission line, or based upon characteristics of matter transported through the pipeline. In some embodiments, the localization devices transmit time or sequence values to the other device, and the values received by the devices just before the detection of the fault may additionally be utilized to calculate the estimated physical location of the fault. | 09-18-2014 |
| 073648000 | Frequency sensitive | 2 |
| 20100199772 | SEISMIC VIBRATORY ACQUISITION METHOD AND APPARATUS - A method and related apparatus are described for generating acoustic signals for use in a vibratory seismic survey, including at least two different sweep signals for the control of at least two different types of vibrators; and matching the phases of the different sweep signals at a transition frequency from one sweep signal to another. | 08-12-2010 |
| 20150309478 | A METHOD FOR AUTHENTICATING A TIMEPIECE - A method of authenticating a timepiece, such as a watch, comprising at least two procedures. A procedure may comprise analysing vibrations of the timepiece. A procedure may comprise analysing characteristics of a gemstone or gemstones of the timepiece. A procedure may comprise comparing measured or detected characteristics with reference information for the timepiece, and authenticating the timepiece based on the results of the comparison. | 10-29-2015 |
