feat: add speed control

app.py

@@ -68,6 +68,7 @@ def text_to_speech(
     speaker_wav,
     speaker: str,
     dialect,
+    speed: float,
     text: str,
 ):
     if len(text) == 0:
@@ -80,6 +81,7 @@ def text_to_speech(
     parsed_ipa = parse_ipa(ipa)
     if dialect == "nansixian":
         dialect = "sixian"
+    models_config[model_id]["model"].tts_model.length_scale = speed
     if use_default_emb_or_custom == "預設語者":
         wav = _do_tts(
             model_id,
@@ -220,6 +222,8 @@ with demo:
         value="",
     )
 
+    speed = gr.Slider(maximum=1.5, minimum=0.5, value=1, label="語速")
+
     gr.Markdown(
         """
         # 臺灣客語語音合成系統
@@ -239,6 +243,7 @@ with demo:
             speaker_wav,
             speaker_drop_down,
             dialect_radio,
+            speed,
             input_text,
         ],
         outputs=[