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SASLab Manual

Main window : Edit > Format > Change Fileheader Sampling Frequency / Time Expansion

This tool allows modifying the sampling frequency (fs) attribute stored in the header of the sound file.

In addition to that, a time expansion factor can be specified. This factor is multiplied with the sampling frequency of the sound file in order to compensate the slowed-down time scale of recordings made using traditional time-expansion bat detectors.

Note that the time expansion factor does not affect the playback speed of the sound file.

The resulting sampling frequency (fr = fs * time expansion factor) shown at the bottom of the dialog box is used for all measurements and time and frequency axis labels of waveforms, spectra and spectrograms.

Avisoft Bioacoustics last modified on 09 September 2019