fix augmentation

enhancer/data/dataset.py

@@ -186,12 +186,14 @@ class TaskDataset(pl.LightningDataModule):
         output["noisy"] = torch.stack(output["noisy"], dim=0)
 
         if self.augmentations is not None:
+            noise = output["noisy"] - output["clean"]
             output["clean"] = self.augmentations(
                 output["clean"], sample_rate=self.sampling_rate
             )
             self.augmentations.freeze_parameters()
-            output["noisy"] = self.augmentations(
-                output["noisy"], sample_rate=self.sampling_rate
+            output["noisy"] = (
+                self.augmentations(noise, sample_rate=self.sampling_rate)
+                + output["clean"]
             )
 
         return output