voice_recognition_tool.py

import speech_recognition as sr
import re
import webbrowser
from smtplib import SMTP
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

def main():
    # enter the name of usb microphone that you found
    # using lsusb
    # the following name is only used as an example
    #mic_name = "USB Device 0x46d:0x825: Audio (hw:1, 0)"
    mic_name = "Microphone (Realtek High Defini"
    # Sample rate is how often values are recorded
    sample_rate = 48000
    # Chunk is like a buffer. It stores 2048 samples (bytes of data)
    # here.
    # it is advisable to use powers of 2 such as 1024 or 2048
    chunk_size = 2048
    # Initialize the recognizer
    r = sr.Recognizer()

    # generate a list of all audio cards/microphones
    mic_list = sr.Microphone.list_microphone_names()

    # the following loop aims to set the device ID of the mic that
    # we specifically want to use to avoid ambiguity.
    for i, microphone_name in enumerate(mic_list):
        if microphone_name == mic_name:
            device_id = i

    # use the microphone as source for input. Here, we also specify
    # which device ID to specifically look for incase the microphone
    # is not working, an error will pop up saying "device_id undefined"
    with sr.Microphone(device_index=device_id, sample_rate=sample_rate,
                       chunk_size=chunk_size) as source:
        # wait for a second to let the recognizer adjust the
        # energy threshold based on the surrounding noise level
        r.adjust_for_ambient_noise(source)
        print("Say Something")
        # listens for the user's input
        audio = r.listen(source)

        try:
            text = r.recognize_google(audio)
            print("you said: " + text)
            if re.search(r'chrome|browser|google', text, re.IGNORECASE):
                webbrowser.open('www.google.com', new=1)
            elif re.search(r'youtube', text, re.IGNORECASE):
                webbrowser.open('www.youtube.com', new=1)
            elif re.search(r'mail', text, re.IGNORECASE):
                print("Sending email")
                mail_notification('test', subject='test', fromAddress='pradip.kumar.k@sap.com', toAddress='pradip.kumar.k@sap.com')


        # error occurs when google could not understand what was said

        except sr.UnknownValueError:
            print("Google Speech Recognition could not understand audio")

        except sr.RequestError as e:
            print("Could not request results from Google Speech Recognition service;{0}".format(e))



def mail_notification(body, subject=None, fromAddress=None, toAddress=None):
    msg = MIMEMultipart()
    msg['From'] = fromAddress
    msg['To'] = ','.join(toAddress)
    msg['Subject'] = subject
    msg.attach(MIMEText(body))
    mailServer = None
    try:
        mailServer = SMTP('localhost')
        mailServer.sendmail(fromAddress, toAddress, msg.as_string())
    except Exception as e:
        print(str(e))
    finally:
        if mailServer != None:
            mailServer.quit()

if __name__ == '__main__':
    main()