Update app.py

app.py

@@ -12,7 +12,7 @@ if "history" not in st.session_state:
 
 def recognize_speech(audio_data, show_messages=True):
     recognizer = sr.Recognizer()
-    audio_recording = sr.Microphone(device_index=-1, sample_rate=16000, chunk_size=1024)
+    audio_recording = sr.Microphone(device_index=4, sample_rate=16000, chunk_size=1024)
 
     with audio_recording as source:
         recognizer.adjust_for_ambient_noise(source)