voice_recorder.py

import argparse
import time
import threading

from aiy.board import Board
from aiy.voice.audio import AudioFormat, play_wav, record_file, Recorder

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--filename', '-f', default='recording.wav')
    args = parser.parse_args()

    with Board() as board:
        print('Press button to start recording.')
        board.button.wait_for_press()

        done = threading.Event()
        board.button.when_pressed = done.set

        def wait():
            start = time.monotonic()
            while not done.is_set():
                duration = time.monotonic() - start
                print('Recording: %.02f seconds [Press button to stop]' % duration)
                time.sleep(0.5)

        record_file(AudioFormat.CD, filename=args.filename, wait=wait, filetype='wav')
        print('Press button to play recorded sound.')
        board.button.wait_for_press()

        print('Playing...')
        play_wav(args.filename)
        print('Done.')

if __name__ == '__main__':
    main()