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#43 Frequency scale in spectrum section is incorrect on high samplerate

v1.0 (example)
open
None
5
2020-08-13
2020-08-13
PE1PWF
No

Using wavesurfer on windows 10 to look at bat calls I noticed the frequency scale in se spectrum section does not match the actual frequency. On the lowest line we see good values but the scale bar shows 0.4Khz in stead of the 40Khz I am measuring. On other (also high) samplerates it looks different but the scale just does not match.

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