[LINUX] Voice Recorder for TOEFL Speaking Test

record.py

# Simple Voice Recorder for TOELF Speaking Test
# Usage:
#  python record.py [output.wav]
# Requirement:
#  Python 2, arecord (often pre-installed on linux)
# What does this program do?
#  First, this program will wait 15 seconds, which is the same length given in the TEFL test for preparing your answer.
#  Second, arecord will begin to record your voice for 45 seconds in which you need to answer the question.
#  After that, the recorded voice will be saved as a wav file.
#  Optionally, you can listen to the recorded voice after your answer.
import subprocess
from subprocess import Popen
import os
from os import path
import time
import sys

if len(sys.argv) < 2:
    print("Output filepath required.")
    exit(1)

pre_limit = 15
limit = 45
output = sys.argv[1]
cmd = "arecord -d {0} -f cd {1}".format(limit, output)

if path.exists(output):
    print("Output file already exists.")
    exit(1)

print("Prepare for your answer in {0} seconds.".format(pre_limit))
for i in range(pre_limit):
    print("{0} seconds left".format(pre_limit-i))
    time.sleep(1)

print("Answer the question...")

proc = Popen(cmd, shell=True)

for i in range(limit):
    time.sleep(1)
    if i == 0: print("START")
    print("{0} seconds left".format(limit - i))

print("END")
proc.wait()

time.sleep(1)

# If you want to listen to the recorded voice,
# comment out the following line and change 'vlc' into the program name of your sound player.
#os.system("vlc ./".format(output))