@@ -99,7 +99,7 @@ class SpecAug(AbsSpecAug):
x, x_lengths = self.time_mask(x, x_lengths)
return x, x_lengths
-class SpecAugLFR(torch.nn.Module):
+class SpecAugLFR(AbsSpecAug):
"""Implementation of SpecAug.
lfr_rate:low frame rate
"""