![]() "Power": Here the FFT results are summed up and averaged energetically.This type is well suited for the visual representation of FFTs "MaxPeak": Here the maximum value of the FFT results is used.The value chosen for each FFT bin can be defined in two ways: Thus, for example, with a 2MB block length it is no longer necessary to measure and represent more than 1 Million points (bins), but only the number necessary for the display, e.g. This results in an increase in measurement performance time, especially for high-resolution FFTs. Modern high-resolution FFT analyzers offer the possibility to decouple the number of measurement results from the FFT block length. ![]() This exponential average is used when the spectrum is continuously monitored over a long period of time. The oldest of the measurements is taken the least into account, the most recent measurement contributes most effectively to the averaged result. However, the weighting is inversely proportional to the 'age' of the result. Here, too, a fixed number of results of the continuous measurements are considered. The exponential mean: FFTs are continuously measured. ![]() This method is suitable for measurements with a defined duration. Each result is considered in equal parts in the averaged final result.
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