another page rendering but no speaker options

app.py

@@ -1,32 +1,29 @@
 import gradio as gr
 from pdfminer.high_level import extract_text
-import logging
-from typing import cast
 from balacoon_tts import TTS
 from huggingface_hub import hf_hub_download, list_repo_files
 
-# Global tts module, initialized from a model selected
-tts = None
-
 def read_pdf(file):
     with open(file.name, "rb") as f:
         text = extract_text(f)
     return text
 
 def set_model(model_name_str):
-    """
-    Gets value from `model_name`, loads the model,
-    re-initializes the tts object, and gets a list of
-    speakers that the model supports and sets them to `speaker`.
-    """
     model_path = hf_hub_download(repo_id="balacoon/tts", filename=model_name_str)
     global tts
     tts = TTS(model_path)
     speakers = tts.get_speakers()
-    speaker_dropdown.update(choices=speakers, value=speakers[0] if speakers else None)
+    speaker_dropdown.choices = speakers
+    speaker_dropdown.update(default=speakers[0] if speakers else None)
+
+def synthesize_audio(file, model_name_str, speaker_str):
+    text_str = read_pdf(file)
+    if len(text_str) > 1024:
+        text_str = text_str[:1024]
+    samples = tts.synthesize(text_str, speaker_str)
+    return (tts.get_sampling_rate(), samples)
 
 def main():
-    logging.basicConfig(level=logging.INFO)
     repo_files = list_repo_files(repo_id="balacoon/tts")
     model_files = [x for x in repo_files if x.endswith("_cpu.addon")]
     model_name_dropdown = gr.inputs.Dropdown(label="Model", choices=model_files)
@@ -35,25 +32,7 @@ def main():
     file_input = gr.inputs.File(label="Select a PDF File", type="file")
     text = gr.outputs.Textbox()
 
-    def synthesize_audio(file, model_name_str, speaker_str):
-        """
-        Gets the selected PDF `file`, model name from `model_name`,
-        and speaker name from `speaker`. Synthesizes the audio waveform
-        from the text extracted from the PDF and returns it.
-        """
-        if file is None or file.name == "":
-            logging.info("No file selected.")
-            return None
-
-        text_str = read_pdf(file)
-        if len(text_str) > 1024:
-            text_str = text_str[:1024]
-
-        global tts
-        samples = cast(TTS, tts).synthesize(text_str, speaker_str)
-        return (cast(TTS, tts).get_sampling_rate(), samples)
-
-    audio = gr.outputs.Audio(label="Generated Audio", type="numpy")
+    audio = gr.outputs.Audio(label="Generated Audio")
 
     iface = gr.Interface(
         fn=synthesize_audio,
@@ -64,7 +43,7 @@ def main():
         debug=True
     )
 
-    model_name_dropdown.action = set_model
+    model_name_dropdown.set_action(set_model)
 
     iface.launch()