update

toolbox/torchaudio/losses/perceptual.py

@@ -85,7 +85,12 @@ class PesqLoss(nn.Module):
         )
 
     def forward(self, denoise: torch.Tensor, clean: torch.Tensor):
-
+        max_val = torch.max(
+            torch.amax(denoise.abs(), dim=1, keepdim=True),
+            torch.amax(clean.abs(), dim=1, keepdim=True),
+        )
+        if max_val == 0:
+            raise AssertionError
         batch_loss = self.loss_fn.forward(clean, denoise)
 
         mask = ~(torch.isnan(batch_loss) | torch.isinf(batch_loss))