Use PyAudio to record two channels of audio to WAV file

store_audio_2channels.py

"""Use PyAudio to record two channels of audio to timestamped one hour long WAV files."""

import pyaudio
import wave
import datetime

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
# record 3606 seconds to get a full 60 minutes
RECORD_SECONDS = 3606
# number of hours to record
RECORD_HOURS = 168

p = pyaudio.PyAudio()

stream = p.open(format=FORMAT,
                channels=CHANNELS,
                rate=RATE,
                input=True,
                frames_per_buffer=CHUNK)

print("* recording")
print datetime.datetime.now()

for j in range(RECORD_HOURS):
    stringdate  = "{:%Y-%m-%d_%H-%M-%S}".format(datetime.datetime.now())
    print "Recording " + stringdate + "__" + str(j) + ".wav"
    WAVE_OUTPUT_FILENAME = stringdate + "__" + str(j) + ".wav"
    wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
    wf.setnchannels(CHANNELS)
    wf.setsampwidth(p.get_sample_size(FORMAT))
    wf.setframerate(RATE)
    for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
        frames = []
        data = stream.read(CHUNK)
        frames.append(data)
        wf.writeframes(b''.join(frames))
        if i % 2000 == 0:
            print "Recorded " + str(100 * i / int(RATE / CHUNK * RECORD_SECONDS)) + "%"
        
    
    wf.close()
    print("* done recording")

stream.stop_stream()
stream.close()
p.terminate()
print "Finished"