From 219c2482ab755fbd4e49dfbdee91bf1a8a4ec49a Mon Sep 17 00:00:00 2001
From: 游雁 <zhifu.gzf@alibaba-inc.com>
Date: 星期五, 19 五月 2023 11:33:27 +0800
Subject: [PATCH] websocket 2pass bugfix

---
 funasr/models/frontend/default.py |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/funasr/models/frontend/default.py b/funasr/models/frontend/default.py
index 2e1b0c4..19994f0 100644
--- a/funasr/models/frontend/default.py
+++ b/funasr/models/frontend/default.py
@@ -18,7 +18,6 @@
 
 class DefaultFrontend(AbsFrontend):
     """Conventional frontend structure for ASR.
-
     Stft -> WPE -> MVDR-Beamformer -> Power-spec -> Mel-Fbank -> CMVN
     """
 
@@ -102,8 +101,8 @@
         if input_stft.dim() == 4:
             # h: (B, T, C, F) -> h: (B, T, F)
             if self.training:
-                if self.use_channel == None:
-                    input_stft = input_stft[:, :, 0, :]
+                if self.use_channel is not None:
+                    input_stft = input_stft[:, :, self.use_channel, :]
                 else:
                     # Select 1ch randomly
                     ch = np.random.randint(input_stft.size(2))
@@ -142,7 +141,6 @@
 
 class MultiChannelFrontend(AbsFrontend):
     """Conventional frontend structure for ASR.
-
     Stft -> WPE -> MVDR-Beamformer -> Power-spec -> Mel-Fbank -> CMVN
     """
 
@@ -260,4 +258,4 @@
         # Change torch.Tensor to ComplexTensor
         # input_stft: (..., F, 2) -> (..., F)
         input_stft = ComplexTensor(input_stft[..., 0], input_stft[..., 1])
-        return input_stft, feats_lens
+        return input_stft, feats_lens
\ No newline at end of file

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