fix(examples): make sure audio playback finishes

Author: dkundel-openai

examples/voice/static/main.py

@@ -1,6 +1,8 @@
 import asyncio
 import random
 
+import numpy as np
+
 from agents import Agent, function_tool
 from agents.extensions.handoff_prompt import prompt_with_handoff_instructions
 from agents.voice import (
@@ -78,6 +80,9 @@ async def main():
             elif event.type == "voice_stream_event_lifecycle":
                 print(f"Received lifecycle event: {event.event}")
 
+        # Add 1 second of silence to the end of the stream to avoid cutting off the last audio.
+        player.add_audio(np.zeros(24000 * 1, dtype=np.int16))
+
 
 if __name__ == "__main__":
     asyncio.run(main())

examples/voice/static/util.py

@@ -62,6 +62,7 @@ def __enter__(self):
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
+        self.stream.stop()  # wait for the stream to finish
         self.stream.close()
 
     def add_audio(self, audio_data: npt.NDArray[np.int16]):