Fix device selection (#330)

Author: twitchard

src/hume/empathic_voice/chat/audio/microphone.py

@@ -88,7 +88,7 @@ def context(cls, *, device: int | None = DEFAULT_DEVICE) -> Iterator["Microphone
         def callback(indata: cffi_backend.buffer, _frames: int, _time: CDataBase, _status: CallbackFlags) -> None:
             event_loop.call_soon_threadsafe(microphone.stream.queue.put_nowait, indata[:])
 
-        with RawInputStream(callback=callback, dtype=cls.DATA_TYPE):
+        with RawInputStream(callback=callback, dtype=cls.DATA_TYPE, device=device):
             yield microphone
 
     def __aiter__(self) -> AsyncIterator[bytes]: