added audio recording snippet

record_mic_speech.py

@@ -0,0 +1,22 @@
+import pyaudio
+import numpy as np
+from matplotlib import pyplot as plt
+
+CHUNKSIZE = 1024 # fixed chunk size
+
+# initialize portaudio
+p = pyaudio.PyAudio()
+stream = p.open(format=pyaudio.paInt16, channels=1, rate=44100, input=True, frames_per_buffer=CHUNKSIZE)
+
+# do this as long as you want fresh samples
+data = stream.read(CHUNKSIZE)
+numpydata = np.fromstring(data, dtype=np.int16)
+
+# plot data
+plt.plot(numpydata)
+plt.show()
+
+# close stream
+stream.stop_stream()
+stream.close()
+p.terminate()