# Python program spr.py
# speech to text from audio file voice.wav
import speech_recognition as sr
from sys import exit
from time import strftime
print("\n"+__file__)
# use a WAV format audio file with German speech:
f = "/home/ahg/audio/voice.wav" # ADAPT THE PATH !
print("transcribe to text, use audio file",f,"\n")
# (audio file formats: WAV, AIFF, AIFF-C or FLAC)
r = sr.Recognizer() # create Recognizer instance
a = sr.AudioFile(f) # speech_recognition.AudioFile
# audio file -> speech_recognition.audio.AudioData
with a as source: audio = r.record(source)
# languages: en-US (US Englisch, default)
#            de_DE (German), zh-CN (Chinese), ...
try:
#send AudioData instance to Google Web Speech API
    text = r.recognize_google(
    audio_data=audio,language="de-DE")
except LookupError:
    print("Sorry, the speech was not understood.")
    exit(1)
print(text) # show the recognized text on screen
timetext = strftime("%y%m%d%H%M%S")
# build a name of a text file with a time stamp
n = "voice_"+timetext+".txt"
# write recognized text to the file named above
with open(n, "w") as x: x.write(text)
print("\nText file",n,"written.\n")