diff --git a/docs/source/demo.rst b/docs/source/demo.rst
index 4bb1513..561b08c 100644
--- a/docs/source/demo.rst
+++ b/docs/source/demo.rst
@@ -1,7 +1,7 @@
 Audio Sample 
 ==================
 
-TTS udio samples
+TTS audio samples
 -------------------
 
 Audio samples generated by a TTS system. Text is first transformed into spectrogram 
@@ -20,55 +20,55 @@ a vocoder.
             <td>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_1.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_1.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_2.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_2.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_3.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_3.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_4.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_4.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_5.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_5.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_6.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_6.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_7.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_7.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_8.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_8.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>
                 <audio controls="controls">
                     <source
-                        src="https://paddlespeech.bj.bcebos.com/Parakeet/tacotron2_ljspeech_waveflow_samples_0.2/sentence_9.wav"
+                        src="https://paddlespeech.bj.bcebos.com/Parakeet/transformer_tts_ljspeech_waveflow_samples_0.2/sentence_9.wav"
                         type="audio/wav">
                     Your browser does not support the <code>audio</code> element.
                 </audio>