Python Voice Recognition Library - Always Listen?

Question

I've recently been working on using a speech recognition library in python in order to launch applications. I Intend to ultimately use the library for voice activated home automation using the Raspberry Pi GPIO.

I have this working, it detects my voice and launches application. The problem is that it seems to hang on the one word I say (for example, I say internet and it launches chrome an infinite number of times)

This is unusual behavior from what I have seen of while loops. I cant figure out how to stop it looping. Do I need to do something out of the loop to make it work properly? Please see the code below.

http://pastebin.com/auquf1bR

import pyaudio,os
import speech_recognition as sr
r = sr.Recognizer()
with sr.Microphone() as source:
        audio = r.listen(source)

def excel():
        os.system("start excel.exe")

def internet():
        os.system("start chrome.exe")

def media():
        os.system("start wmplayer.exe")

def mainfunction():
        user = r.recognize(audio)
        print(user)
        if user == "Excel":
                excel()
        elif user == "Internet":
                internet()
        elif user == "music":
                media()
while 1:
        mainfunction()

Answer 1

The problem is that you only actually listen for speech once at the beginning of the program, and then just repeatedly call recognize on the same bit of saved audio. Move the code that actually listens for speech into the while loop:

import pyaudio,os
import speech_recognition as sr


def excel():
        os.system("start excel.exe")

def internet():
        os.system("start chrome.exe")

def media():
        os.system("start wmplayer.exe")

def mainfunction(source):
    audio = r.listen(source)
    user = r.recognize(audio)
    print(user)
    if user == "Excel":
        excel()
    elif user == "Internet":
        internet()
    elif user == "music":
        media()

if __name__ == "__main__":
    r = sr.Recognizer()
    with sr.Microphone() as source:
        while 1:
            mainfunction(source)