diff --git a/egs/librispeech/ASR/.conv_feat_vis.py.swp b/egs/librispeech/ASR/.conv_feat_vis.py.swp
index 2c31277bc..1fcf04c99 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
new file mode 100644
index 000000000..c93c739cc
--- /dev/null
+++ b/egs/librispeech/ASR/conv_feat_vis.py
@@ -0,0 +1,15 @@
+from glob import glob
+import numpy as np
+import matplotlib.pyplot as plt
+
+feats = []
+feat_list = glob('./conv_feat/*')
+for feat in feat_list:
+    feat = np.load(feat)
+    feats.append(feat)
+
+feats_all = feats[0]
+for feat in feats:
+    feats_all = np.concatenate([feats_all, feat])
+
+print(feats_all.shape)