diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000000..26d33521af
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/icefall.iml b/.idea/icefall.iml
new file mode 100644
index 0000000000..5fdd65ba2a
--- /dev/null
+++ b/.idea/icefall.iml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="PyDocumentationSettings">
+    <option name="format" value="PLAIN" />
+    <option name="myDocStringFormat" value="Plain" />
+  </component>
+  <component name="TestRunnerService">
+    <option name="PROJECT_TEST_RUNNER" value="py.test" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000000..cd83845641
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="LanguageDetectionInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000000..105ce2da2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000000..b33405972e
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/icefall.iml" filepath="$PROJECT_DIR$/.idea/icefall.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000000..35eb1ddfbb
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_dev_test.py b/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_dev_test.py
index 6f75dbfa49..52be850729 100755
--- a/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_dev_test.py
+++ b/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_dev_test.py
@@ -52,7 +52,13 @@ def get_parser():
         default=80,
         help="""The number of mel bins for Fbank""",
     )
-
+    # 修改： 添加 指定参数 speed-perturb
+    parser.add_argument(
+        "--speed-perturb",
+        type=bool,
+        default=False,
+        help="Enable 0.9 and 1.1 speed perturbation for data augmentation. Default: False.",
+    )
     parser.add_argument(
         "--whisper-fbank",
         type=str2bool,
@@ -103,7 +109,11 @@ def compute_fbank_kespeech_dev_test(args):
         cut_set = cut_set.trim_to_supervisions(
             keep_overlapping=False, min_duration=None
         )
-
+        # 修改 执行 perturb操作
+        if speed_perturb:
+            cut_set = (
+                    cut_set + cut_set.perturb_speed(0.9) + cut_set.perturb_speed(1.1)
+            )
         logging.info("Computing features")
         cut_set = cut_set.compute_and_store_features_batch(
             extractor=extractor,
diff --git a/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_splits.py b/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_splits.py
index c398411f6e..1bbe68de70 100755
--- a/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_splits.py
+++ b/egs/multi_zh-hans/ASR/local/compute_fbank_kespeech_splits.py
@@ -100,6 +100,19 @@ def get_parser():
         help="""The number of mel bins for Fbank""",
     )
 
+    parser.add_argument(
+        "--whisper-fbank",
+        type=str2bool,
+        default=False,
+        help="Use WhisperFbank instead of Fbank. Default: False.",
+    )
+    #修改： 添加 指定参数 speed-perturb
+    parser.add_argument(
+        "--speed-perturb",
+        type=bool,
+        default=False,
+        help="Enable 0.9 and 1.1 speed perturbation for data augmentation. Default: False.",
+    )
     parser.add_argument(
         "--whisper-fbank",
         type=str2bool,
@@ -157,6 +170,11 @@ def compute_fbank_kespeech_splits(args):
         cut_set = cut_set.trim_to_supervisions(
             keep_overlapping=False, min_duration=None
         )
+        # 修改 执行 perturb操作
+        if speed_perturb:
+            cut_set = (
+                    cut_set + cut_set.perturb_speed(0.9) + cut_set.perturb_speed(1.1)
+            )
 
         logging.info("Computing features")
         cut_set = cut_set.compute_and_store_features_batch(