Soft-db Tenor 24bits Data User Guide Instrukcja Użytkownika Pobierz pdf (Strona 34)

Tenor Data Logger Soft dB inc.

The function Export .txt allows exporting the average power spectrum in text format.

5.2.3 Statistics

This module allows computing the standard Lx% statistics on the global level historic for

the entire framework of the selected channel. The Statistic function starts by computing the

global levels of the framework with an adjustable time resolution. The global level

calculation is done with power spectra using blocks with a number of samples adjusted to

match the requested time step. A Hanning time window is used for the FFT computation.

The power spectrum approach is used to facilitated the A-weighting and integration

options. When the global level historic is computed, the Statistics module computes the

statistics of the global levels and presents a graph of the sorted global levels.

The interface of the Statistics function is presented in the next figure.

Figure 24: Statistics interface

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