--- a/test.py
+++ b/test.py
@@ -11,12 +11,18 @@
 WAVE_OUTPUT_FILENAME = "output.wav"
 
 p = pyaudio.PyAudio()
-
+device_idx = 0;
+for i in range (0, p.get_device_count()):
+	print(p.get_device_info_by_index(i))
+	if p.get_device_info_by_index(i)['name'] == 'Built-in Input':
+		device_idx = i
+		print i
 stream = p.open(format=FORMAT,
-                channels=CHANNELS,
-                rate=RATE,
-                input=True,
-                frames_per_buffer=CHUNK)
+    channels=CHANNELS,
+    rate=RATE,
+    input=True,
+    input_device_index=device_idx,
+    frames_per_buffer=CHUNK)
 
 print("* recording")