Page 14 - Vibrations 4
P. 14

Waterfall analysis



        Use waterfall displays of octave data for an overview of

        device noise versus time or RPM.



        Display individual frequency bands as a function of RPM


        or time using the slice marker function.


        Alternatively, use trace markers to select individual traces


        for display.

























        Inputs from four acoustic sources.


























                Waterfall display of an acoustic flyover test can be


           analysed trace-by-trace or by selecting time slices along


                                                    the z-axis.

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