diff --git a/audio_embedding_vggish.yaml b/audio_embedding_vggish.yaml
index 85b426b..0b33eeb 100644
--- a/audio_embedding_vggish.yaml
+++ b/audio_embedding_vggish.yaml
@@ -1,4 +1,4 @@
-name: 'audio_embedding_vggish'
+name: 'audio_decode'
 operators:
     -
         name: '_start_op'
@@ -11,31 +11,52 @@ operators:
                 col: 0
         outputs:
             -
-                df: 'audio'
+                df: 'input_df'
         iter_info:
             type: map
+    -
+        name: 'audio_decoder'
+        function: 'towhee/audio-decoder'
+        init_args:
+        inputs:
+            -
+                df: 'input_df'
+                name: 'audio_path'
+                col: 0
+        outputs:
+            -
+                df: 'audio_df'
+        iter_info:
+            type: generator
     -
         name: 'embedding_model'
         function: 'towhee/torch-vggish'
         init_args:
         inputs:
             -
-                df: 'audio'
-                name: 'audio_path'
+                df: 'audio_df'
+                name: 'audio'
                 col: 0
+            -
+                df: 'audio_df'
+                name: 'sample_rate'
+                col: 1
         outputs:
             -
-                df: 'emb'
+                df: 'output_df'
         iter_info:
-            type: map
+            type: time_window
+            params:
+              time_range_sec: 3
+              time_step_sec: 3
     -
         name: '_end_op'
         function: '_end_op'
         init_args:
         inputs:
             -
-                df: 'emb'
-                name: 'embs'
+                df: 'output_df'
+                name: 'vec'
                 col: 0
         outputs:
             -
@@ -50,20 +71,29 @@ dataframes:
                 name: 'audio_path'
                 vtype: 'str'
     -
-        name: 'audio'
+        name: 'input_df'
         columns:
             -
                 name: 'audio_path'
                 vtype: 'str'
     -
-        name: 'emb'
+        name: 'audio_df'
+        columns:
+            -
+                name: 'audio_frame'
+                vtype: 'numpy.ndarray'
+            -
+                name: 'sample_rate'
+                vtype: 'numpy.ndarray'
+    -
+        name: 'output_df'
         columns:
             -
-                name: 'embs'
+                name: 'vec'
                 vtype: 'numpy.ndarray'
     -
         name: '_end_df'
         columns:
             -
-                name: 'embs'
+                name: 'vec'
                 vtype: 'numpy.ndarray'