| Patents for G01H 3 - Measuring vibrations by using a detector in a fluid (2,243) |
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| 09/19/1989 | US4866986 Method and system for dual phase scanning acoustic microscopy |
| 09/06/1989 | EP0331548A1 Checking method and apparatus for ultrasonic transducers |
| 08/31/1989 | DE3805778A1 Method and device for the detection and monitoring of the meteorologically-conditioned transmission behaviour of sound |
| 08/30/1989 | EP0329927A2 Method for improving tread noise of a tire by relative rotation of a rib, and simulating the tread noise effected thereof |
| 07/04/1989 | US4843866 Ultrasound phantom |
| 06/29/1989 | DE3742478A1 Vibration meter |
| 06/28/1989 | EP0322375A2 Method and micro-processor-based apparatus for measuring environmental noise pollution |
| 06/13/1989 | US4838070 Method and apparatus for dry testing water-immersible acoustic transducers |
| 06/07/1989 | EP0319022A2 Automatic musical instrument tuning system |
| 05/30/1989 | US4834074 Safety system for a shock wave generator |
| 05/24/1989 | EP0317322A2 Method for monitoring acoustic emissions |
| 05/10/1989 | EP0315199A2 Ultrasonic transducer and current loop transmitter |
| 05/03/1989 | EP0175737B1 Finding the direction of a sound |
| 04/26/1989 | EP0312845A1 Monitoring device for reversing vehicles |
| 04/25/1989 | US4825423 Method of measuring microcrack depth |
| 04/25/1989 | US4823600 Ultrasonic transducer and current loop transmitter |
| 04/25/1989 | CA1253247A1 Ultrasonic image camera using arrays of acoustic waveguides |
| 04/11/1989 | US4819638 Apparatus for non-contacting disintegration of calculi |
| 04/05/1989 | EP0309829A1 Procedure and device for monitoring the mechanical integrity of a component |
| 03/29/1989 | EP0308526A1 Noise assessment of vehicle pumps |
| 03/28/1989 | CA1251859A1 Signal representation generator |
| 03/23/1989 | DE3743560C1 Method for testing the noise development of safety belt retractors of motor vehicles and device for carrying out the method |
| 03/21/1989 | US4813415 Sensor for evaluation of shock wave pulses |
| 03/21/1989 | US4813402 Coupling member for a shock wave therapy device |
| 02/14/1989 | US4803908 Automatic musical instrument tuning system |
| 02/07/1989 | US4803671 Sensor for acoustic shockwave pulses |
| 01/31/1989 | CA1249655A1 Method and device for detecting a specific acoustic spectral feature |
| 01/10/1989 | US4796509 Electronic tuning apparatus |
| 01/10/1989 | CA1248620A1 Scanning acoustic microscope |
| 01/05/1989 | DE3720882A1 Verfahren und schaltungsanordnung zum automatischen wiedererkennen von signalfolgen Method and circuit arrangement for automatically recognize of signal follow |
| 01/04/1989 | EP0298046A2 Device for measuring, indicating and controlling sound pressure (or sound levels) in an environment |
| 12/28/1988 | EP0296588A2 Method and circuit arrangement for the automatic recognition of signal sequences |
| 12/27/1988 | US4794552 Signal synthesizer |
| 11/29/1988 | US4788651 Method for improving tread noise by relative rotation of a rib and simulating the effect thereof |
| 11/01/1988 | US4782469 Ultra-sound sensor |
| 10/11/1988 | US4777650 Dual cavity pressure microphones |
| 09/28/1988 | EP0284077A1 Process and device for determining linear deformations in an electro acoustic transfer system |
| 09/07/1988 | EP0280827A1 Pitch detection process and speech coder using said process |
| 08/16/1988 | US4764905 Ultrasonic transducer for the determination of the acoustic power of a focused ultrasonic field |
| 08/16/1988 | CA1240785A1 Method and apparatus for very low temperature acoustic microscopy |
| 07/19/1988 | US4759067 Acoustic regenerator |
| 06/30/1988 | DE3643736A1 Stationary measuring device for measuring flow noise at acoustic underwater trailing (drag) antennas |
| 06/08/1988 | EP0269652A1 Tuning aid for musical instruments |
| 06/01/1988 | EP0268788A2 Method and device for testing the operation of a microphone |
| 05/31/1988 | US4748598 Audiometer apparatus having a tone generator |
| 05/18/1988 | EP0267475A1 Ultrasonic sensor |
| 05/17/1988 | US4744242 Method for monitoring cutting tool wear during a machining operation |
| 05/03/1988 | US4741212 Method for determining structural defects in semiconductor wafers by ultrasonic microscopy |
| 03/24/1988 | WO1987007068A3 Tuning aid for musical instruments |
| 03/24/1988 | DE3631101A1 Transmission medium for acoustic waves and use thereof |
| 03/22/1988 | US4732071 Tuning indicator for musical instruments |
| 03/15/1988 | US4730494 Method for examining a surface of a sample by means of ultrasound |
| 02/24/1988 | EP0256438A1 Sensor for recording shock wave impulses |
| 02/24/1988 | EP0256436A1 Concretion smashing device |
| 02/24/1988 | EP0256202A2 Coupling body for a shockwave-therapeutic apparatus |
| 02/16/1988 | US4725989 Method controlling the focusing of an ultrasonic field and apparatus for performing said method |
| 02/10/1988 | EP0255636A1 Acoustic shock wave sensor |
| 01/13/1988 | EP0252764A2 Method and apparatus for testing transducers |
| 01/13/1988 | CN87202332U Liquid surface-wave interferometer |
| 01/07/1988 | DE3621921A1 Device for transmitting and receiving ultrasonic pulses |
| 12/29/1987 | US4715219 Acoustic calibration device |
| 12/15/1987 | US4712429 Windscreen and two microphone configuration for blast noise detection |
| 12/09/1987 | CN87102276A Apparatus for ultrasonically inspecting large shaft from luquid-filled bose |
| 12/08/1987 | US4712093 Audible audio level indicator |
| 11/19/1987 | WO1987007068A2 Tuning aid for musical instruments |
| 11/04/1987 | CN86102695A Node for towed acoustic array |
| 10/31/1987 | CN86210266U Sectioned electrode circular pipe hydrophone |
| 10/13/1987 | US4699008 Apparatus for ultrasonically inspecting a large shaft from a liquid-filled bore |
| 09/30/1987 | EP0239371A2 Apparatus for ultrasonically inspecting a large shaft from a liquid-filled bore |
| 09/30/1987 | CN87102652A Apparatus and method for ultrasound detection |
| 09/24/1987 | DE3609822A1 Electronic stethoscope for safety vibration analyses |
| 09/23/1987 | EP0237563A1 Apparatus for inspection and/or positioning objects with wave energy using wave guides |
| 09/22/1987 | CA1227058A1 Mesuring instrument |
| 09/08/1987 | US4691569 Apparatus for observing sound field of ultrasonic wave |
| 09/08/1987 | CA1226663A1 Ultrasonic diagnostic device |
| 08/26/1987 | EP0233676A1 Apparatus for ultrasound detection |
| 08/25/1987 | CA1226059A1 Gas turbine rub detector |
| 08/13/1987 | DE3603866A1 Method for calibrating and balancing vibration measuring and testing devices |
| 08/04/1987 | US4683750 Thermal acoustic probe |
| 07/29/1987 | EP0229981A1 Method for controlling the focussing characteristics of an ultrasonic field and device for carrying out said method |
| 07/07/1987 | US4677852 Method of and apparatus for inspecting and/or positioning objects with wave energy using wave guides |
| 06/30/1987 | US4676111 Method and apparatus for sound testing mufflers |
| 06/25/1987 | DE3545379A1 Method for controlling the properties of the focus of an ultrasonic field and device for carrying out the method |
| 06/25/1987 | DE3545351A1 Method for controlling the position of the focus of an ultrasonic field and device for carrying out the method |
| 06/23/1987 | US4674333 Multi-color displaying ultrasonic microscope |
| 06/16/1987 | US4673871 Digital noise generator |
| 06/16/1987 | CA1223074A1 Method of and system for determining the pitch in human speech |
| 06/10/1987 | CN86107241A Cartography instrument for measurement of sound |
| 05/27/1987 | EP0223682A1 Sound mapping device |
| 05/26/1987 | US4668941 Method and apparatus for discriminating sounds due to the breakage or glass |
| 05/20/1987 | EP0222503A1 Transducers |
| 05/12/1987 | US4665494 Spectrum display device for audio signals |
| 05/05/1987 | US4663745 Circuit arrangement for separating high-frequency pulses generated by an acoustic reflecting lens arrangement |
| 04/15/1987 | CN86200213U Portable vibration detector |
| 04/09/1987 | WO1987002136A1 Method of an apparatus for inspection and/or positioning objects with wave energy using wave guides |
| 04/07/1987 | US4655086 Method and means for measuring sound intensity |
| 03/31/1987 | US4654642 Tamperproof classroom noise alarm |
| 03/17/1987 | US4649743 Abnormal noise detector for gear units |
| 03/11/1987 | EP0213695A2 Digital noise generator |
| 03/10/1987 | US4649528 Optical pin apparatus for measuring the arrival time and velocity of shock waves and particles |