fix: AudioBufferProcessor has_audio returns based on user or bot audio existing

CHANGELOG.md

@@ -27,6 +27,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed an issue in `AudioBufferProcessor` where a recording is not created
+  when a bot speaks and user input is blocked.
+
 - Fixed a `FastAPIWebsocketTransport` and `SmallWebRTCTransport` issue where
   `on_client_disconnected` would be triggered when the bot ends the
   conversation. That is, `on_client_disconnected` should only be triggered when

src/pipecat/processors/audio/audio_buffer_processor.py

@@ -137,12 +137,12 @@ class AudioBufferProcessor(FrameProcessor):
         return self._num_channels
 
     def has_audio(self) -> bool:
-        """Check if both user and bot audio buffers contain data.
+        """Check if either user or bot audio buffers contain data.
 
         Returns:
-            True if both buffers contain audio data.
+            True if either buffer contains audio data.
         """
-        return self._buffer_has_audio(self._user_audio_buffer) and self._buffer_has_audio(
+        return self._buffer_has_audio(self._user_audio_buffer) or self._buffer_has_audio(
             self._bot_audio_buffer
         )