diff --git a/egs/librispeech/ASR/.conv_feat_vis.py.swp b/egs/librispeech/ASR/.conv_feat_vis.py.swp
index a40e4d2cf..cf2b27318 100644
Binary files a/egs/librispeech/ASR/.conv_feat_vis.py.swp and b/egs/librispeech/ASR/.conv_feat_vis.py.swp differ
diff --git a/egs/librispeech/ASR/conv_feat_vis.py b/egs/librispeech/ASR/conv_feat_vis.py
index 7bf54188c..2d135ab0f 100644
--- a/egs/librispeech/ASR/conv_feat_vis.py
+++ b/egs/librispeech/ASR/conv_feat_vis.py
@@ -22,7 +22,7 @@ for spk in spk_list:
     for i in range(512):
         mean = feats_all[i].mean()
         std = feats_all[i].std()
-        print(mean, std)
+        statistic_file.write(f'{mean} {std}')
     '''
     for i in range(512):
         plt.hist(feats_all[i], bins=500)