Fix: ElevenLabsTTSService, change voice and model

CHANGELOG.md

@@ -108,6 +108,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed an issue with `ElevenLabsTTSService` where changing the model or voice
+  while the service is running wasn't working.
+
 - Fixed an issue that would cause multiple instances of the same class to behave
   incorrectly if any of the given constructor arguments defaulted to a mutable
   value (e.g. lists, dictionaries, objects).

src/pipecat/services/elevenlabs/tts.py

@@ -254,14 +254,16 @@ class ElevenLabsTTSService(AudioContextWordTTSService):
     async def set_model(self, model: str):
         await super().set_model(model)
         logger.info(f"Switching TTS model to: [{model}]")
-        # No need to disconnect/reconnect for model changes with multi-context API
+        await self._disconnect()
+        await self._connect()
 
     async def _update_settings(self, settings: Mapping[str, Any]):
         prev_voice = self._voice_id
         await super()._update_settings(settings)
-        # If voice changes, we don't need to reconnect, just use a new context
         if not prev_voice == self._voice_id:
             logger.info(f"Switching TTS voice to: [{self._voice_id}]")
+            await self._disconnect()
+            await self._connect()
 
     async def start(self, frame: StartFrame):
         await super().start(frame)