correct create_spectrogram function

utils.py

@@ -100,7 +100,7 @@ def create_spectrogram(sig, directory, names, cmap, minimum, window_size=1024, o
     :param overlap (float): Ratio of overlapping samples between each window (default 50%).
     """
     if overlap >= 1:
-        hop = window - overlap
+        hop = window_size - overlap
         print(f'You put a hop value over 1. This has been corrected to have {overlap} as overlap size between window')
     else:
         hop = window_size * (1-overlap) # As hop length is the number of audio samples between adjacent STFT columns