fix ds2 config

deepspeech/training/gradclip.py

@@ -46,7 +46,8 @@ class ClipGradByGlobalNormWithLog(paddle.nn.ClipGradByGlobalNorm):
 
             # debug log
             if i < 10:
-                logger.debug(f"Grad Before Clip: {p.name}: {float(sum_square.sqrt()) }")
+                logger.debug(
+                    f"Grad Before Clip: {p.name}: {float(sum_square.sqrt()) }")
 
         # all parameters have been filterd out
         if len(sum_square_list) == 0:

examples/aishell/s0/README.md

 # Aishell-1
 
 ## CTC
-| Model | Config | Test set |  CER |
-| --- | --- | --- | --- |
-| DeepSpeech2 | conf/deepspeech2.yaml | test | 0.078977 |
-| DeepSpeech2 | release 1.8.5 | test | 0.080447 |
+| Model | release | Config | Test set |  CER |
+| --- | --- | --- | --- | --- |
+| DeepSpeech2 | 2.1 | conf/deepspeech2.yaml | test | 0.080428 |
+| DeepSpeech2 | 2.0 | conf/deepspeech2.yaml | test | 0.078977 |
+| DeepSpeech2 | 1.8.5 | - | test | 0.080447 |

examples/aishell/s0/conf/augmentation.json

 [
+  {
+    "type": "speed",
+    "params": {
+      "min_speed_rate": 0.9,
+      "max_speed_rate": 1.1,
+      "num_rates": 3
+    },
+    "prob": 0.0
+  },
   {
     "type": "shift",
     "params": {

examples/tiny/s1/conf/augmentation.json

 [
-  {
-    "type": "shift",
-    "params": {
-      "min_shift_ms": -5,
-      "max_shift_ms": 5
-    },
-    "prob": 1.0
-  },
   {
     "type": "speed",
     "params": {
@@ -16,6 +8,14 @@
     },
     "prob": 0.0
   },
+  {
+    "type": "shift",
+    "params": {
+      "min_shift_ms": -5,
+      "max_shift_ms": 5
+    },
+    "prob": 1.0
+  },
   {
     "type": "specaug",
     "params": {