diff --git a/funasr/frontends/default.py b/funasr/frontends/default.py
index 364c8bbb9..c4bdbd774 100644
--- a/funasr/frontends/default.py
+++ b/funasr/frontends/default.py
@@ -85,8 +85,12 @@ class DefaultFrontend(nn.Module):
         return self.n_mels
 
     def forward(
-            self, input: torch.Tensor, input_lengths: torch.Tensor
+            self, input: torch.Tensor, input_lengths:  Union[torch.Tensor, list]
     ) -> Tuple[torch.Tensor, torch.Tensor]:
+        if isinstance(input_lengths, list):
+            input_lengths = torch.tensor(input_lengths)
+        if  input.dtype == torch.float64:
+            input = input.float()
         # 1. Domain-conversion: e.g. Stft: time -> time-freq
         if self.stft is not None:
             input_stft, feats_lens = self._compute_stft(input, input_lengths)