Hi,
I've noticed extremely low max frequency value for some music tracks:
Spectrum analysis looks pretty good though:
Must be a bug of some sort. I've uploaded a few such tracks, which max frequencies I believe are wrong, to the Google Drive:
https://drive.google.com/open?id=0B1qgKcXZIlhRV0JDbHplMmRJb0EHope this'll help. Needless to say, having flows in the max frequency detection algorithm leads to lower overall file ratings, and therefore - to removal of the good tracks instead of the bad ones. I hope you'll fix the algorithm in the next release.
Windows 10 (1703) x64, Similarity 2.3.1, "classic" music analysis algorithm (not the new global optimization algorithm introduced in 2.3.1) without OpenCL acceleration.