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The Realwave Pocket Analyser is a handheld, PDA-based analyser that addresses many applications including realtime FFT analysis, spectrograms, octave analysis, vibration level meter with human vibration filter, sound level meter & FFT based RPM meter. And prices start from just £1385. Click here to find out more.
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The refinement of vehicles and rotating machines with respect to Noise and Vibration is central to creating a successful product. Not just making less noise, but also making the "right" noise can be important in the overall success of any manufacturing endeavor.
A color or intensity map of a waterfall plot. Different noise or vibration levels are shown in different colors. In this example the intensity scale is shown in dBs. This has the effect of boosting the lower values.

Note that the above image is not shown full size.