diff --git a/py/voice_recognition.py b/py/voice_recognition.py
index 965082a..8ffc199 100644
--- a/py/voice_recognition.py
+++ b/py/voice_recognition.py
@@ -1,21 +1,20 @@
 import speech_recognition as sr
 
-
-class Voice:
+class Voice: #create Class
     @staticmethod
-    def listen():
+    def listen():   #define function listen()
         recognizer = sr.Recognizer()
 
         try:
-            recognizer = sr.Recognizer()
             with sr.Microphone() as source:
                 print("Adjusting for ambient noise...")
-                recognizer.adjust_for_ambient_noise(source)
+                recognizer.adjust_for_ambient_noise(source, duration=0.5) #listen to surrounding for .5sec to adjust backgroundnoise
                 print("Listening...")
-                audio_data = recognizer.listen(source)
+                audio_data = recognizer.listen(source) #listen to user until user stops speaking
                 print("Audio captured")
                 try:
-                    text = recognizer.recognize_sphinx(audio_data)  # Using Google Web Speech API
+                    text = recognizer.recognize_sphinx(audio_data)  # Using Sphinx convert audio to text (also works offline)
+                #if any Exceptions or Errors eccur => return ERROR
                 except sr.UnknownValueError:
                     text = "ERROR"
                 except sr.RequestError as e: