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| Number | Title | Issue Date |
| 8176789 | Three-microphone sound-intensity probe Method and apparatus for measuring sound intensity emitted by a vibrating surface (10). The apparatus includes a probe (25) with three miniature microphones in the side-by-side arrangement, attached to a straight supporting tube (23). The three ... | 05/15/2012 |
| 8082795 | 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. ... | 12/27/2011 |
| 7574917 | Method for in-situ measuring of acoustic attenuation and system therefor There is provided a method for measuring in-situ the acoustic attenuation obtained by a hearing protection device worn by a user, comprising: positioning the hearing protection device comprising a microphone oriented towards the user's ear canal at the user's ear; | 08/18/2009 |
| 7437935 | Continuous chatter boundary criteria for manufactured parts A chatter boundary system includes a measuring module, a comparison module, and a boundary module. The measuring module measures and collects samples of undulations in a manufactured part. The comparison module classifies a sound signal generated by the undulations ... | 10/21/2008 |
| 7401519 | System for monitoring exposure to impulse noise In one embodiment, a system for monitoring exposure to impulse noise includes a sound-sensing device, such as a microphone or other type of pressure transducer, operable to sense impulse noise, and a storage module operable to store the waveform of the impulse noise... | 07/22/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7316162 | Method of determining the sound pressure resulting from a surface element of a sound emitting device A three-dimensional array (10) of microphones (M) is used to determine the three-dimensional sound field above a surface element (ΔS) of a sound emitting surface (S), and the air-particle velocity (un) at the surface element (ΔS) is determined us... | 01/08/2008 |
| 7315244 | Excessive noise level alerting device A sound-detection and alerting system (SDAS) is designed for use in hospitals, offices, or other environments where excessive noise levels are of concern. The SDAS depends on several variables to trigger an alarm so that false alarms are kept to a minimum. A microph... | 01/01/2008 |
| 7305886 | Noise detecting apparatus An accurate measure of normally operating noise is required for a useful noise measurement system. A device is needed to make a representative measure of the boat's acoustic power using measured boat sound level with integrated corrections for sensed distance to the... | 12/11/2007 |
| 7287637 | Conveyor system for minimizing product damage during collection A conveyor system is provided to limit the vertical fall experienced by a product transported along the conveyor and falling into a collection bin. A sensor in a fixed position relative to the product conveying plane of the conveyor measures product collection heigh... | 10/30/2007 |
| 7272976 | Pressure sensor A pressure gauge includes a diaphragm having a substantially rigid outer portion and a displaceable inner portion that displaces in response to a pressure difference between first and second sides of the diaphragm. The pressure gauge further includes a sensor locate... | 09/25/2007 |
| 7270006 | Single button operating sound level meter and method therefor A sound level monitor device has a microphone. A sound level measurement circuit is coupled to the microphone. The sound level measurement circuit takes sound signals monitored by the microphone and converts the sound signals to digital signals. A display is coupled... | 09/18/2007 |
| 7260482 | Ultrasonic characterization of high concentration particles A method for characterizing a suspension with particles floating therein, which method comprises the steps of generating an acoustic actuation signal and registering an acoustic reflected signal. Further, a first dataset is calculated on the basis of the reflected s... | 08/21/2007 |
| 7228740 | Noninvasive characterization of a flowing multiphase fluid using ultrasonic interferometry An apparatus for noninvasively monitoring the flow and/or the composition of a flowing liquid using ultrasound is described. The position of the resonance peaks for a fluid excited by a swept-frequency ultrasonic signal have been found to change frequency both in re... | 06/12/2007 |
| 7199720 | Hearing protection warning device An apparatus for hearing protection comprising: a body having coupling means, said coupling means configured to attach to a body part; a sound sensor disposed in said body, said sound sensor configured to sense ambient sound; a sound processor coupled to said sound ... | 04/03/2007 |
| 7188053 | Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (als... | 03/06/2007 |
| 7165456 | Measuring method to determine the noise emission of an electric motor and measuring device A measuring method to determine the noise emission of an electric motor is proposed in which the vibrational excitation of the running electric motor is measured by a laser vibrometer device and this measured vibrational excitation is correlated with a noise level. | 01/23/2007 |
| 7151835 | Personal noise monitoring apparatus and method The present invention relates to a method, system and device for monitoring noise received by individuals operating in noisy environments. The device comprises a substantially credit card size housing and can be worn as a “badge”. The device includes a mo... | 12/19/2006 |
| 7121142 | Installation and method for acoustic measurement with marker microphone in space An acoustic measurement installation including acoustic measurement instrumentation, in particular an acoustic measurement antenna fitted with at least one microphone; a positioning system for positioning the antenna by ultrasound and including at least one ultrasou... | 10/17/2006 |
| 7117134 | Method to optimize generation of ultrasound using mathematical modeling for laser ultrasound inspection The invention is directed to a laser ultrasound testing system with adaptive generation of sonic energy signals. The system may detect or test features of the manufactured object such as defects and layer properties. A laser generator initiates a sonic energy signal... | 10/03/2006 |
| 7103454 | Process for recognizing the movement of a motor vehicle A process and system are provided for recognizing the movement of a motor vehicle as well as a process for using an acceleration sensor in a device for blocking the starting of a motor vehicle. Reliable information is obtained on whether or not the motor vehicle was... | 09/05/2006 |
| 7098844 | Acceleration detector with integral vehicle parameter display using a vehicle interface Calibration of an acceleration detector is initiated by a user depressable button such as a button indicating a vehicle is at rest and/or by the detector reading an OBDII vehicle communication protocol to determine the condition of the vehicle. Calibration permits m... | 08/29/2006 |
| 7092853 | Environmental noise monitoring system A continuous environmental noise level recording and analysis system is provided. The system is capable of sampling, processing and storing Equivalent Sound Level values over a period of about two weeks. The recorded data is downloaded and analyzed to show graphs, a... | 08/15/2006 |
| 7073379 | Arrangement and procedure for the measuring of liquid level An arrangement for fill level measurement is provided, with which accurate fill level measurement on a continuing basis is possible, including a container (3) containing a fill substance (1) whose fill level is to be measured, a fill level measuring de... | 07/11/2006 |
| 7058184 | Acoustic measurement method and apparatus Method and apparatus for simultaneous acoustic measurement at a point (M) in space of the three components of the sound intensity vector. A preferred omnidirectional vector probe (40) includes a central ring (42) with four small, microphones on tubes a... | 06/06/2006 |
| 7054228 | Sound source location and quantification using arrays of vector probes Method and apparatus for locating and quantifying sound sources using an array of acoustic vector probes (200). Signals received at the probes are converted to digital form and fed into a digital signal processor (400) which computes the sound pressure... | 05/30/2006 |
| 7040170 | Methods for measuring strength of film and determining quality of object having the film A method for measuring a film strength of a film on an object. An incident angle of pressure waves with respect to an object to be measured, the object including a base coated with a film, is set for applying the pressure waves to the object. The incident angle is v... | 05/09/2006 |
| 6978677 | Apparatus for measuring ultrasonic power An ultrasonic power meter is provided for measuring ultrasonic power emitted by a device (18) under test. The meter includes a casing forming a chamber (16) within which an ultrasonic absorber (14) formed from polyurethane material is located. O... | 12/27/2005 |
| 6919865 | Display device for work machine A display device for displaying information toward outside of a work machine is installed in the work machine. ... | 07/19/2005 |
| 6904390 | Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (als... | 06/07/2005 |
| 6874365 | Method, system, and means for ultrasound inspection A method of ultrasound inspection is provided. The method includes providing a composite first part, introducing ultrasound to the part, receiving reflections of the ultrasound introduced in the first part, and predicting a residual strength of the first part using ... | 04/05/2005 |
| 6748803 | Liquid measurement system and shared interface apparatus for use therein A liquid measurement system including interface apparatus for sharing the excitation and signal processing of an ultrasonic transonic transducer and temperature measuring device remotely located at a liquid container is disclosed. The interface apparatus includes a ... | 06/15/2004 |
| 6684703 | Method for measuring adherence of a coating on a substrate A process for measuring the bond of a coating on a substrate. Ultrasound echoes through the substrate of a test piece are collected and their amplitudes are measured, their decay being a function of the bond of a coating deposited on the opposite face of ... | 02/03/2004 |
| 6681890 | Sound barrier layer for insulated heat shield An improved heat shield provides thermal insulation and reduced noise transmission of vehicular engine components, including exhaust manifolds. The structure has three layers; an outer structural metal layer, a center insulation layer to isolate heat and ... | 01/27/2004 |
| 6655212 | Sound field measuring apparatus and method A sound field measuring apparatus has: an exponential pulse generator 11 which outputs a pulse signal to speakers 4a, 4b, . . . ; a microphone 6 which is disposed in an acoustic space 5 where the speakers 4a, 4b, . . . are disposed, and which detects a pu... | 12/02/2003 |
| 6609425 | Ultrasonic probe and ultrasonic diagnosis apparatus using the same A two-dimensional ultrasonic probe has a transmitting function of an ultrasonic signal without electric interconnection of a numerous number of microcomponents and without increase in crosstalk and electric impedance. This probe includes an optical fiber ... | 08/26/2003 |
| 6591682 | Device and process for signal analysis A device for detecting or analyzing machinery damage is used preferably in the determination of defects in roller bearings. Pulse-like machinery or bearing noise acquired by a sensor is converted into special time signals. These time signals correspond to... | 07/15/2003 |
| 6481268 | Particle measurement by acoustic speckle The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal of the particles and relating these characteristics to th... | 11/19/2002 |
| 6422082 | Laser shock peening quality assurance by ultrasonic analysis A method for quality control testing of a laser shock peening process of a production workpiece includes (a) ultrasonically scanning at least a portion of a laser shock peened surface on the workpiece wherein a region having deep compressive residual stre... | 07/23/2002 |
| 6349936 | Device for measuring the height of a sheet pile by using a reflectively operating radiation detector A device for measuring the height of a sheet pile by using a reflectively operating radiation detector, a sheet separating device and a device for conveying separated sheets to a printing machine being assigned to the pile, comprising a system for measuri... | 02/26/2002 |
