diff --git a/python/paddle/audio/__init__.py b/python/paddle/audio/__init__.py
index a9e7419492f3a..4e97f51693cd9 100644
--- a/python/paddle/audio/__init__.py
+++ b/python/paddle/audio/__init__.py
@@ -16,10 +16,6 @@
 from . import features
 from . import functional
 from . import utils
+from . import backends
 
-__all__ = [
-    "compliance",
-    "functional",
-    "features",
-    "utils",
-]
+__all__ = ["compliance", "functional", "features", "utils", "backends"]
diff --git a/python/paddle/audio/features/__init__.py b/python/paddle/audio/features/__init__.py
index 00781397f3d35..e6b005e501988 100644
--- a/python/paddle/audio/features/__init__.py
+++ b/python/paddle/audio/features/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/python/paddle/audio/features/layers.py b/python/paddle/audio/features/layers.py
index 6ad1f79cf335c..fe0fcb9684a04 100644
--- a/python/paddle/audio/features/layers.py
+++ b/python/paddle/audio/features/layers.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/python/paddle/audio/functional/functional.py b/python/paddle/audio/functional/functional.py
index 7e08d38af71bc..2406698bcde3e 100644
--- a/python/paddle/audio/functional/functional.py
+++ b/python/paddle/audio/functional/functional.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/python/paddle/audio/functional/window.py b/python/paddle/audio/functional/window.py
index a079351992911..a4692dbc962df 100644
--- a/python/paddle/audio/functional/window.py
+++ b/python/paddle/audio/functional/window.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/python/paddle/audio/utils/__init__.py b/python/paddle/audio/utils/__init__.py
index e3ef7ec88533b..b3502b76cce25 100644
--- a/python/paddle/audio/utils/__init__.py
+++ b/python/paddle/audio/utils/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"
 # you may not use this file except in compliance with the License.
diff --git a/python/paddle/audio/utils/error.py b/python/paddle/audio/utils/error.py
index f39774892d776..ab239a24970ad 100644
--- a/python/paddle/audio/utils/error.py
+++ b/python/paddle/audio/utils/error.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.