diff --git a/examples/librispeech/s1/conf/augmentation.json b/examples/librispeech/s1/conf/augmentation.json
index 8e6e9704..40a5b790 100644
--- a/examples/librispeech/s1/conf/augmentation.json
+++ b/examples/librispeech/s1/conf/augmentation.json
@@ -19,17 +19,17 @@
   {
     "type": "specaug",
     "params": {
+      "W": 0,
+      "warp_mode": "PIL",
       "F": 10,
-      "T": 50,
       "n_freq_masks": 2,
+      "T": 50,
       "n_time_masks": 2,
       "p": 1.0,
-      "W": 80,
       "adaptive_number_ratio": 0,
       "adaptive_size_ratio": 0,
       "max_n_time_masks": 20,
-      "replace_with_zero": true,
-      "warp_mode": "PIL"
+      "replace_with_zero": true
     },
     "prob": 1.0
   }
diff --git a/examples/librispeech/s1/conf/transformer.yaml b/examples/librispeech/s1/conf/transformer.yaml
index 4aa7b915..fe9cab06 100644
--- a/examples/librispeech/s1/conf/transformer.yaml
+++ b/examples/librispeech/s1/conf/transformer.yaml
@@ -33,7 +33,7 @@ collator:
   keep_transcription_text: False
   sortagrad: True 
   shuffle_method: batch_shuffle
-  num_workers: 0
+  num_workers: 2
 
 
 # network architecture
@@ -74,7 +74,7 @@ model:
 
 
 training:
-  n_epoch: 120
+  n_epoch: 120 
   accum_grad: 2
   global_grad_clip: 5.0
   optim: adam