add clipping detection

app.py

@@ -44,6 +44,10 @@ def mix_at_snr(clean, noise, snr, eps=1e-10):
     noise = noise / K
     mixture = clean + noise
     assert torch.isfinite(mixture).all()
+    max_m = mixture.abs().max()
+    if max_m > 1:
+        print(f"Clipping detected during mixing. Reducing gain by {1/max_m}")
+        clean, noise, mixture = clean / max_m, noise / max_m, mixture / max_m
     return clean, noise, mixture