attempt s curve to further reduce artefacts

app.py

@@ -245,7 +245,7 @@ def generate(audio_path, ins, speed, alpha, beta, embedding, steps=200):
         synthaud[right:] = 0
         for k in range(int(len(synthaud) * trail_percent)):
             s = s_curve(k / int(len(synthaud) * trail_percent))
-            synthaud[right - int(len(synthaud) * trail_percent) + k] /= s
+            synthaud[right - int(len(synthaud) * trail_percent) + k] *= (1 - s)
 
 
         audio = np.concatenate((audio, synthaud))