feat: add application parameter to choose a custom microphone

ref: N25B-119

src/robot_interface/endpoints/audio_sender.py

@@ -7,7 +7,7 @@ import zmq
 
 from robot_interface.endpoints.socket_base import SocketBase
 from robot_interface.state import state
-from robot_interface.utils.microphone import choose_mic_default
+from robot_interface.utils.microphone import choose_mic
 
 
 logger = logging.getLogger(__name__)
@@ -17,10 +17,16 @@ class AudioSender(SocketBase):
     def __init__(self, zmq_context, port=5558):
         super(AudioSender, self).__init__(str("audio"))  # Convert future's unicode_literal to str
         self.create_socket(zmq_context, zmq.PUB, port)
-        self.audio = pyaudio.PyAudio()
-        self.microphone = choose_mic_default(self.audio)
         self.thread = None
 
+        try:
+            self.audio = pyaudio.PyAudio()
+            self.microphone = choose_mic(self.audio)
+        except IOError as e:
+            logger.warning("PyAudio is not available.", exc_info=e)
+            self.audio = None
+            self.microphone = None
+
     def start(self):
         """
         Start sending audio in a different thread.