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NTi Audio AG is a manufacturer of test and measurement instruments for acoustics, audio and vibration applications. With headquarters in Schaan, Liechtenstein, the company specializes in end-of-line audio testing for manufacturing quality control purposes, [1] provides instruments for testing public address systems in safety-critical environments [2] and also produces handheld Audio Analyzers ...
A shaker is a device used in vibration testing to excite the structure, either for endurance testing or modal testing. Sample layout of a modal testing system.
In contrast to contact measuring methods, the test object is unaffected by the vibration measuring process. Vibrometry covers a huge range of applications such as the study of microstructures moving only a few pm at frequencies up to 2.5 GHz, all the way up to the intense dynamics occurring in Formula 1 engines with vibration velocities ...
Biothesiometry is a noninvasive medical test used to quantify the perception of vibration by measuring its threshold. [1] It is used in neurology and electrophysiology to diagnose a number of conditions, like diabetic neuropathy and erectile dysfunction , where the vibration perception threshold (VPT) would be higher than average.
A vibrometer is generally a two beam laser interferometer that measures the frequency (or phase) difference between an internal reference beam and a test beam. The most common type of laser in an LDV is the helium–neon laser, although laser diodes, fiber lasers, and Nd:YAG lasers are also used.
Brüel & Kjær supplies systems for occupational health, helmet/cabin/cockpit noise assessment, acoustic and human vibration monitoring, urban noise monitoring and noise-mapping of vehicles in order to test and monitor the environmental noise impact, and to look for ways of reducing environmental noise impact on armed forces personnel and local ...
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