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Science > Acoustics 
length (L)
Science; Acoustics
One of the seven SI base quantities. The SI unit of length is the meter, symbol m
data logging
Science; Acoustics
On-going measurements, stored at regular intervals for downloading to a PC.
nominal frequency
Science; Acoustics
Or preferred frequency - a specified octave or fractional-octave filter as defined by the ISO and ANSI standards.
wave number
Science; Acoustics
Or wavenumber is the spatial frequency of a wave, either in cycles per distance or radians per unit distance. It can be envisaged as the number of waves that exist over a ...
order tracking
Science; Acoustics
Order tracking is a special case of FFT analysis applied to variable-speed rotating machines where the sampling frequency of the analyzer is varied to be an exact multiple of the ...
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