add print

app.py

@@ -36,6 +36,7 @@ def mix_at_snr(clean, noise, snr, eps=1e-10):
         noise = noise.repeat((1, int(math.ceil(clean.shape[1] / noise.shape[1]))))
     max_start = int(noise.shape[1] - clean.shape[1])
     start = torch.randint(0, max_start, ()).item()
+    print("start:", start, clean.shape)
     noise = noise[:, start : start + clean.shape[1]]
     E_speech = torch.mean(clean.pow(2)) + eps
     E_noise = torch.mean(noise.pow(2))