| Patents for G01H 3 - Measuring vibrations by using a detector in a fluid (2,243) |
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| 09/21/1994 | CN1025973C 超声功率计 Ultrasonic Power Meter |
| 09/15/1994 | DE4307758A1 Method and device for pressure measurement and/or detection of air bubbles in flowing media |
| 09/13/1994 | US5347586 Adaptive system for controlling noise generated by or emanating from a primary noise source |
| 09/07/1994 | EP0613556A1 Ultrasonic holography imaging method and apparatus. |
| 08/30/1994 | US5341808 Doppler ultrasound clutter and sensitivity phantom |
| 08/24/1994 | EP0498793B1 Process for manufacturing an acoustic sensor with an essentially non-detachable protective layer, and acoustic sensor so obtained |
| 08/18/1994 | DE4304814A1 Method of influencing transport speed |
| 08/18/1994 | DE4304139A1 Measurement arrangement for calibrating ultrasonic shock wave sensors |
| 07/19/1994 | US5329817 Ultrasonic holography imaging method and apparatus |
| 07/12/1994 | US5327771 Loading probe for use in testing transducers |
| 06/28/1994 | US5325339 Absolute calibration technique for broadband ultrasonic transducers |
| 06/14/1994 | US5321636 Method and arrangement for determining signal pitch |
| 06/14/1994 | US5321357 Three-dimensional detection, dosimetry and imaging of an energy field by formation of a polymer in a gel |
| 04/28/1994 | DE4237140A1 Video camera for detection of electric fields, power, heat and press. distributions - contains CCD with pyroelectric film causing electric field distribution corresp. to local distribution of heat or heat generating radiation |
| 04/27/1994 | EP0594098A1 Method for the location of a speaker and the acquisition of a voice message, and related system |
| 04/06/1994 | CN1024152C Hydroacoustic telemetering frequency meter |
| 03/15/1994 | US5295192 Electronic noise attenuation method and apparatus for use in effecting such method |
| 03/15/1994 | US5295087 Method of simulating tire tread noise and simulator therefor |
| 03/08/1994 | US5293353 Method for manufacturing an acoustic sensor, and acoustic sensor obtained thereby, having a substantially non-detachable protective layer |
| 02/17/1994 | WO1994004009A1 Microphone mounting device |
| 02/17/1994 | WO1994003826A1 Dosimetry and imaging of radiant energy by formation of a polymer in a gel |
| 02/15/1994 | US5285772 Therapy apparatus for treating a patient with focused acoustic waves |
| 01/18/1994 | CA1326298C Automatic musical instrument tuning system |
| 01/05/1994 | EP0426761B1 Acoustic field transducers |
| 01/05/1994 | DE4220429A1 Detection and=or classification of noise from propeller-driven vessel - filtering, band-limiting, envelope demodulating and using FFT and fuzzy logic to evaluate fundamental frequencies of spectral lines or harmonics by associating with correspondence functions to produce reliability values. |
| 01/04/1994 | US5276629 Method and apparatus for wave analysis and event recognition |
| 01/04/1994 | CA1325841C Monitoring equipment for the safety devices used in vehicles when driving in reverse |
| 12/16/1993 | DE4219372A1 Full signal decomposition for technical diagnosis - decomposing input signal into regular deterministic and stochastic components, narrow band digital filtering, demodulating, Fourier transforming to determine amplitude, phase and frequency. |
| 12/14/1993 | US5269292 Pressure pulse source having a positive lens with a pressure sensor |
| 12/07/1993 | US5268876 Method of estimating near field aberrating delays |
| 11/25/1993 | DE4216924A1 Carcass cutter - has an electromagnetic converter to convert cutting sound for an evaluator to stop the cutter on a faulty cutting action |
| 11/18/1993 | DE4215455A1 Measuring filling state of pebble mill - analysing noise produced by mill using sound sensors and Fast Fourier Transform spectrum analyser and interpolation for unknown filling state. |
| 11/18/1993 | DE4215363A1 Measuring level of horizontal boundary layer for level control of multiple phase mixture in flotation cell - directing ultrasound at predetermined angle in defined region and sensing components reflected from boundary between phases. |
| 11/03/1993 | EP0568282A2 Noise control system |
| 10/29/1993 | CA2094984A1 Noise control system |
| 10/12/1993 | US5251469 Calibration system |
| 09/21/1993 | US5247302 Entropy-based signal receiver |
| 09/02/1993 | WO1993017356A1 Hydrophone arrangement |
| 09/02/1993 | CA2130430A1 Hydrophone arrangement |
| 08/24/1993 | CA1321636C Rigid foraminous microphone probe for acoustic measurement in turbulent flow |
| 08/19/1993 | DE4204385A1 Regulation of noise in passenger compartment in motor vehicle - subtracting integrated loudspeaker and microphone signals and detecting lowest value using comparator for regulation of audio end stage amplifier |
| 08/17/1993 | US5237562 Echo path transition detection |
| 08/03/1993 | US5233661 Sound field variable apparatus |
| 07/20/1993 | US5229973 Method of selecting ultrasonic transducers for use in ultrasonic inspection apparatus |
| 07/20/1993 | US5228329 Leak detector for fluid distribution systems serving intermittent loads |
| 07/06/1993 | US5224382 Transmission type scanning acoustic microscope |
| 06/29/1993 | US5224170 Time domain compensation for transducer mismatch |
| 05/27/1993 | WO1993010446A1 Ultrasonic holography imaging method and apparatus |
| 05/25/1993 | US5214232 Electric stringed musical instrument equipped with detector optically detecting string vibrations |
| 05/25/1993 | US5212987 Acoustic screen scan microscope for the examination of an object in the short-range field of a resonant acoustic oscillator |
| 05/13/1993 | DE4221359C1 Detecting periodically varying, pulse-like noise strengths - forming correlation function from signals produced by frequency filtering and threshold value |
| 05/12/1993 | CN1072018A Underwater noise wide frequency range transient acquisition, storage and processing system |
| 05/11/1993 | US5210718 Calibration of seismic streamers in a helmholz resonator |
| 04/29/1993 | DE4135177A1 Therapeutic assembly for treatment by acoustic irradiation - has acoustic source aligned by X=ray beam with focus of ultrasonic radiation accurately determined and displayed |
| 04/15/1993 | DE4234366A1 Cooking control for microwave oven - + with automatic regulation of cooking process dependent on noise level of escaping steam |
| 03/09/1993 | US5193077 Method and apparatus for improved seismic prospecting |
| 02/11/1993 | DE4209525C1 Restoring output signal of diaphragm hydrophone - removing artifacts by subtracting correction signal derived from output signal |
| 02/10/1993 | EP0372060B1 An acoustic screen scan microscope for the examination of an object in the short-range field of a resonant acoustic oscillator |
| 02/03/1993 | EP0525155A1 Apparatus for testing a phased array of transducers |
| 01/21/1993 | DE4123749A1 Sync. triggering circuit for laryngostroboscope flash tube - extracts first harmonic of signal not limited in bandwidth and contg. high harmonics and noise, using low pass filter with limit frequency controlled by microprocessor |
| 01/14/1993 | DE4222050A1 Sound field analysis realistic in terms of human perception - analysing multiple channel microphone system signals as individual components associated with single sources and separately psycho-acoustically analysed |
| 01/13/1993 | EP0522705A2 A loading probe for use in testing transducers |
| 01/07/1993 | DE4228934A1 Determining confidence interval of acoustic noise percentile measurements - measuring signal time and amplitude variations and deriving instantaneous value distribution, variance and confidence interval |
| 12/22/1992 | US5172597 Method and application for measuring sound power emitted by a source in a background of ambient noise |
| 12/15/1992 | US5171930 Electroglottograph-driven controller for a MIDI-compatible electronic music synthesizer device |
| 11/17/1992 | US5164919 Fluidic sonar sensor |
| 11/04/1992 | EP0511553A1 Calibration system |
| 10/21/1992 | EP0509800A2 A pressure measurement apparatus for inspecting therapeutic energy waves |
| 10/21/1992 | EP0509654A2 Time domain compensation for transducer mismatch |
| 10/14/1992 | EP0508888A1 Method of selecting ultrasonic transducers |
| 10/13/1992 | US5155708 Acoustic wave sensor and method of making same |
| 09/29/1992 | US5150618 Acoustic bearing defect detector |
| 09/23/1992 | CN1064744A Underwater noise measuring system with submersible flag |
| 09/15/1992 | US5146780 Vacuum-isolation vessel and method for measurement of thermal noise in microphones |
| 09/15/1992 | US5146776 Method for continuously calibrating an optical vibration sensor |
| 09/03/1992 | WO1992015027A1 Apparatus for testing a phased array of transducers |
| 08/25/1992 | US5142233 Tuning device with battery condition display |
| 08/05/1992 | EP0497261A2 Apparatus for determining the acoustic intensity of focussing electroacoustic transducers |
| 07/30/1992 | DE4132964C1 Registering acoustic near field of marine vessel - using platform for hydrophones and distance sensors at set spacing to locate dominant sources e.g. engine, generator |
| 07/07/1992 | US5128905 Acoustic field transducers |
| 06/24/1992 | EP0491373A2 Method of, and device for reducing noises generated at an indoor unit of a separate type room air conditioner package |
| 06/23/1992 | US5123418 Micro-echographic probe for ultrasound collimation through a deformable surface |
| 06/16/1992 | US5121634 Ultrasonic microscope |
| 05/27/1992 | CN1016818B Cartography instrument for measurement of sound |
| 05/26/1992 | US5117461 Electroacoustic device for hearing needs including noise cancellation |
| 05/19/1992 | US5113680 Apparatus for detecting intensity and/or density of shot blasting |
| 05/14/1992 | WO1992008292A1 Ultrasonic energy detector with frequency and amplitude indications and background noise reduction |
| 05/06/1992 | EP0483603A2 Pressure pulse source |
| 04/29/1992 | CN2103131U Water-sound telemeter frequency instrument |
| 04/15/1992 | EP0480425A1 Method of simulating tire tread noise and simulator therefor |
| 04/14/1992 | US5103675 Signal detector and method for detecting signals having selected frequency characteristics |
| 03/31/1992 | US5101162 Method and apparatus for testing the response of a stress wave sensor |
| 03/17/1992 | US5097512 Transducer testing |
| 03/17/1992 | US5095909 Ultrasound diagnostic equipment |
| 03/17/1992 | CA1297576C Ultrasonic transducer and current loop transmitter |
| 03/11/1992 | EP0473664A1 Analysis of waveforms. |
| 03/04/1992 | EP0472578A1 Apparatus and methods for the generation of stabilised images from waveforms. |
| 03/04/1992 | CN1059202A Hydroacoustic telemetering frequency meter |
| 02/18/1992 | US5089997 Ultrasonic energy detector with frequency and amplitude indications and background noise reduction |
| 02/18/1992 | US5089988 Method and apparatus for compensating sensitivity fluctuations in a hydrophone transducer array |