TempoCNN minimum expected audio length

[dbogdanov]

On very short inputs (e.g., 8 seconds) the predictions by TempoCNN are 0 BPM:

[ WARNING ] TempoCNN: On the computation of majority voting, the second candidate, 0, obtained the same number of votes as the winning candidate, 0

The minimum expected length for the the input audio should be clarified in the documentation.

Should the E_WARNING above be more explicit on the reasons for such cases? Or there can be an input length check with a separate E_WARNING (or even exception) before running the network.