diff --git a/wasmedge-chatTTS/.gitignore b/wasmedge-chatTTS/.gitignore
index de665f5..8207d82 100644
--- a/wasmedge-chatTTS/.gitignore
+++ b/wasmedge-chatTTS/.gitignore
@@ -1,3 +1,2 @@
 asset
-config
-*.wav
\ No newline at end of file
+config
\ No newline at end of file
diff --git a/wasmedge-chatTTS/README.md b/wasmedge-chatTTS/README.md
index 133d5ed..a457314 100644
--- a/wasmedge-chatTTS/README.md
+++ b/wasmedge-chatTTS/README.md
@@ -57,4 +57,12 @@ let config_data = serde_json::to_string(&json!({"prompt": "[oral_2][laugh_0][bre
         .unwrap()
         .as_bytes()
         .to_vec();
-```
\ No newline at end of file
+```
+### Demo speaker
+<table>
+<td align="center">
+
+[demo](https://github.com/user-attachments/assets/53b6b5f0-8568-4309-9a91-735459156b07)
+
+</td>
+</table>
\ No newline at end of file
diff --git a/wasmedge-chatTTS/assets/demo.mp4 b/wasmedge-chatTTS/assets/demo.mp4
new file mode 100644
index 0000000..9355dfd
Binary files /dev/null and b/wasmedge-chatTTS/assets/demo.mp4 differ
diff --git a/wasmedge-chatTTS/assets/demo.wav b/wasmedge-chatTTS/assets/demo.wav
new file mode 100644
index 0000000..f9b38d1
Binary files /dev/null and b/wasmedge-chatTTS/assets/demo.wav differ
diff --git a/wasmedge-chatTTS/src/main.rs b/wasmedge-chatTTS/src/main.rs
index 60ed8ec..8e01d35 100644
--- a/wasmedge-chatTTS/src/main.rs
+++ b/wasmedge-chatTTS/src/main.rs
@@ -15,7 +15,7 @@ fn get_data_from_context(context: &GraphExecutionContext, index: usize, limit: u
 }
 
 fn main() {
-    let prompt = "It is [uv_break] test sentence [laugh] for chat T T S";
+    let prompt = "It is test sentence [uv_break] for chat T T S.";
     let tensor_data = prompt.as_bytes().to_vec();
     let config_data = serde_json::to_string(&json!({"prompt": "[oral_2][laugh_0][break_6]", "spk_emb": "random", "temperature": 0.5, "top_k": 0, "top_p": 0.9}))
         .unwrap()
@@ -37,7 +37,6 @@ fn main() {
     context.compute().expect("Failed to compute");
     let bytes_written = get_data_from_context(&context, 1, 4);
     let bytes_written = usize::from_le_bytes(bytes_written.as_slice().try_into().unwrap());
-    println!("Byte: {}", bytes_written);
     let output_bytes = get_data_from_context(&context, 0, bytes_written);
     let spec = hound::WavSpec {
         channels: 1,