def listen_for_speech():
"""
Does speech recognition using Google's speech recognition service.
Records sound from microphone until silence is found and save it as WAV and then converts it to FLAC. Finally, the file is sent to Google and the result is returned.
"""
stream = initStream()
print "* listening. CTRL+C to finish."
all_m = []
data = ''
#SILENCE_LIMIT = 2
rel = vConfig.RATE/vConfig.INPUT_FRAMES_PER_BLOCK
slid_win = deque(maxlen=vConfig.SILENCE_LIMIT*rel)
started = False
while (True):
data = stream.read(vConfig.INPUT_FRAMES_PER_BLOCK)
slid_win.append (abs(audioop.avg(data, 2)))
if(True in [ x>vConfig.THRESHOLD for x in slid_win]):
if(not started):
print "starting record"
started = True
all_m.append(data)
elif (started==True):
print "finished"
#the limit was reached, finish capture and deliver
filename = save_speech(all_m,p)
print filename
textString = GoogleSpeech.stt(filename, vConfig.RATE)
if ( textString != '' ):
#os.system( "say " + str(textString) )
print "Initiating Configuration Lookup"
#cmd = vConfig.getConfig( textString )
#if ( cmd is not None ):
runCommand(textString)
#reset all
started = False
slid_win = deque(maxlen=vConfig.SILENCE_LIMIT*rel)
all_m= []
stream = initStream()
print stream
print "listening ... again"
print "* done recording"
stream.close()
