Vibration spectrum analysis chart4/7/2024 If, however, the sampling frequency is less than twice as high as the highest frequency to be sampled, the sampled waveform will contain extraneous components called “aliases.” The generation of aliases is called aliasing.Īn example of aliasing sometimes occurs in motion pictures, as for instance when the wagon wheels in a Western seem to be going backward. As long as the sampling frequency is more than twice as high as the highest frequency in the signal, the sampled wave will be a proper representation of the analog waveform. To digitize an analog signal for processing in digital instruments such as an FFT analyzer, it first must be periodically sampled, the sampling process occurring at a specific rate called the sampling frequency. 2021 Hydraulic Institute Fall Conference.Vibration Institute Annual Training Conference.Current Vibration Institute Certified Vibration Analysts.Society for Machinery Failure Prevention Technology. Vibration Diagnostics Using Case Studies.Cat I – Introduction to Machinery Vibrations.Directory of Certified Vibration Analysts.
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