diff --git a/playground/freerun.py b/playground/freerun.py
index d290ccb6..4f88f1ae 100644
--- a/playground/freerun.py
+++ b/playground/freerun.py
@@ -7,7 +7,7 @@ import torch
 from TTS_infer_pack.TextPreprocessor_onnx import TextPreprocessorOnnx
 
 
-MODEL_PATH = "onnx/v2proplus_export/v2proplus"
+MODEL_PATH = "onnx/v2_export/v2"
 
 def audio_postprocess(
     audios,
@@ -135,7 +135,7 @@ vtis = ort.InferenceSession(MODEL_PATH+"_export_vits.onnx")
     "input_text_phones": input_phones,
     "pred_semantic": pred_semantic,
     "spectrum": spectrum.astype(np.float32),
-    "sv_emb": sv_emb.astype(np.float32)
+    # "sv_emb": sv_emb.astype(np.float32)
 })
 
 audio_postprocess([audio])
diff --git a/playground/onnx_if_node_test.py b/playground/onnx_if_node_test.py
deleted file mode 100644
index 0497f1a5..00000000
--- a/playground/onnx_if_node_test.py
+++ /dev/null
@@ -1,214 +0,0 @@
-import torch
-import torch.nn as nn
-import onnx
-import onnxruntime as ort
-from onnx import helper, TensorProto
-import numpy as np
-import os
-
-# Define file paths
-PLAYGROUND_DIR = "playground"
-MODEL_A_PATH = os.path.join(PLAYGROUND_DIR, "a.onnx")
-MODEL_B_PATH = os.path.join(PLAYGROUND_DIR, "b.onnx")
-MODEL_C_PATH = os.path.join(PLAYGROUND_DIR, "c.onnx")
-
-# --- 1. Create two simple PyTorch modules ---
-
-class ModelA(nn.Module):
-    """This model adds 1 to the input."""
-    def forward(self, x):
-        return x + 1.0
-
-class ModelB(nn.Module):
-    """This model multiplies the input by 2."""
-    def forward(self, x):
-        return x * 2.0
-
-def create_and_export_models():
-    """Creates two nn.Modules and exports them to ONNX."""
-    print("Step 1: Creating and exporting PyTorch models A and B...")
-    os.makedirs(PLAYGROUND_DIR, exist_ok=True)
-
-    # Define a dummy input with a dynamic axis
-    batch_size = 1
-    sequence_length = 10  # This dimension will be dynamic
-    features = 4
-    dummy_input = torch.randn(batch_size, sequence_length, features)
-
-    # Export Model A
-    print(f"Exporting Model A to {MODEL_A_PATH}")
-    torch.onnx.export(
-        ModelA(),
-        dummy_input,
-        MODEL_A_PATH,
-        input_names=['inputA'],
-        output_names=['output'],
-        dynamic_axes={'inputA': {1: 'sequenceA'}, 'output': {1: 'sequence'}},
-        opset_version=11 # If node requires opset >= 11
-    )
-
-    # Export Model B
-    print(f"Exporting Model B to {MODEL_B_PATH}")
-    torch.onnx.export(
-        ModelB(),
-        dummy_input,
-        MODEL_B_PATH,
-        input_names=['inputB'],
-        output_names=['output'],
-        dynamic_axes={'inputB': {1: 'sequenceB'}, 'output': {1: 'sequence'}},
-        opset_version=11
-    )
-    print("Models A and B exported successfully.")
-
-def combine_models_with_if():
-    """
-    Reads two ONNX models and combines them into a third model
-    using an 'If' operator.
-    """
-    print("\nStep 2: Combining models A and B into C with an 'If' node...")
-
-    # Load the two exported ONNX models
-    model_a = onnx.load(MODEL_A_PATH)
-    model_b = onnx.load(MODEL_B_PATH)
-
-    # The graphs for the 'then' and 'else' branches of the 'If' operator
-    then_graph = model_a.graph
-    then_graph.name = "then_branch_graph"
-    else_graph = model_b.graph
-    else_graph.name = "else_branch_graph"
-
-    # The data input for the main graph is defined here.
-    # We take it from one of the original models.
-    data_inputA = model_a.graph.input[0]
-    data_inputB = model_b.graph.input[0]
-
-    # For some onnxruntime versions, subgraphs should not have their own
-    # explicit 'input' list if the inputs are captured from the parent graph.
-    # We clear the input lists of the subgraphs to force implicit capture.
-    del then_graph.input[:]
-    del else_graph.input[:]
-
-    # The output names of the subgraphs must be the same.
-    # The 'If' node will have an output with this same name.
-    subgraph_output_name = model_a.graph.output[0].name
-    assert subgraph_output_name == model_b.graph.output[0].name, "Subgraph output names must match"
-
-
-    # Define the inputs for the main graph
-    # 1. The boolean condition to select the branch
-    cond_input = helper.make_tensor_value_info('if_use_a', TensorProto.BOOL, [])
-
-    # The main graph's output is the output from the 'If' node.
-    # We can use the ValueInfoProto from one of the subgraphs directly.
-    main_output = model_a.graph.output[0]
-
-    # Create the 'If' node
-    if_node = helper.make_node(
-        'If',
-        inputs=['if_use_a'],
-        outputs=[subgraph_output_name], # This name MUST match the subgraph's output name
-        then_branch=then_graph,
-        else_branch=else_graph
-    )
-
-    # Create the main graph containing the 'If' node. Its inputs are the condition
-    # AND the data that the subgraphs will capture.
-    main_graph = helper.make_graph(
-        nodes=[if_node],
-        name='if_main_graph',
-        inputs=[cond_input, data_inputA, data_inputB],
-        outputs=[main_output]
-    )
-
-    # Create the final combined model, specifying the opset and IR version
-    opset_version = 16
-    final_model = helper.make_model(main_graph,
-                                    producer_name='onnx-if-combiner',
-                                    ir_version=9,  # For compatibility with older onnxruntime
-                                    opset_imports=[helper.make_opsetid("", opset_version)])
-
-    # Check the model for correctness
-    onnx.checker.check_model(final_model)
-
-    # Save the combined model
-    onnx.save(final_model, MODEL_C_PATH)
-    print(f"Combined model C saved to {MODEL_C_PATH}")
-
-def verify_combined_model():
-    """
-    Loads the combined ONNX model and runs inference to verify
-    that the 'If' branching and dynamic shapes work correctly.
-    """
-    print("\nStep 3: Verifying the combined model C...")
-    sess = ort.InferenceSession(MODEL_C_PATH)
-
-    # --- Test Case 1: Select Model A (if_use_a = True) ---
-    print("\n--- Verifying 'then' branch (Model A) ---")
-    use_a = np.array(True)
-    # Use a different sequence length to test dynamic axis
-    test_seq_len_a = 15
-    test_seq_len_b = 10
-    input_data_a = np.random.randn(1, test_seq_len_a, 4).astype(np.float32)
-    input_data_b = np.random.randn(1, test_seq_len_a, 4).astype(np.float32)
-
-    # Run inference
-    outputs = sess.run(
-        None,
-        {'if_use_a': use_a, 'inputA': input_data_a, 'inputB': input_data_b}
-    )
-    result_a = outputs[0]
-
-    # Calculate expected output from Model A
-    expected_a = input_data_a + 1.0
-
-    # Verify the output and shape
-    np.testing.assert_allclose(result_a, expected_a, rtol=1e-5, atol=1e-5)
-    assert result_a.shape[1] == test_seq_len_a, "Dynamic shape failed for branch A"
-    print("✅ Branch A (if_use_a=True) works correctly.")
-    print(f"✅ Dynamic shape test passed (input seq_len={test_seq_len_a}, output seq_len={result_a.shape[1]})")
-
-    # --- Test Case 2: Select Model B (if_use_a = False) ---
-    print("\n--- Verifying 'else' branch (Model B) ---")
-    use_b = np.array(False)
-    # Use another sequence length
-    test_seq_len_a = 8
-    test_seq_len_b = 5
-    input_data_a = np.random.randn(1, test_seq_len_a, 4).astype(np.float32)
-    input_data_b = np.random.randn(1, test_seq_len_b, 4).astype(np.float32)
-
-    # Run inference
-    outputs = sess.run(
-        None,
-        {'if_use_a': use_b, 'inputA': input_data_a, 'inputB': input_data_b}
-    )
-    result_b = outputs[0]
-
-    # Calculate expected output from Model B
-    expected_b = input_data_b * 2.0
-
-    # Verify the output and shape
-    np.testing.assert_allclose(result_b, expected_b, rtol=1e-5, atol=1e-5)
-    assert result_b.shape[1] == test_seq_len_b, "Dynamic shape failed for branch B"
-    print("✅ Branch B (if_use_a=False) works correctly.")
-    print(f"✅ Dynamic shape test passed (input seq_len={test_seq_len_b}, output seq_len={result_b.shape[1]})")
-
-def cleanup():
-    """Removes the intermediate ONNX files."""
-    print("\nCleaning up intermediate files...")
-    for path in [MODEL_A_PATH, MODEL_B_PATH]:
-        if os.path.exists(path):
-            os.remove(path)
-            print(f"Removed {path}")
-
-def main():
-    """Main function to run the entire process."""
-    try:
-        create_and_export_models()
-        combine_models_with_if()
-        verify_combined_model()
-    finally:
-        cleanup()
-    print("\nAll steps completed successfully!")
-
-if __name__ == "__main__":
-    main()
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diff --git a/playground/ref/audio_prompt_hubert.npy b/playground/ref/audio_prompt_hubert.npy
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