Abstract

Right from the beginning of previous century, researchers have shown interest in areas like Automatic Speech Recognition, Image Processing and Natural Language Processing. The area of Automatic Speech Recognition (ASR) has received attention over the past five decades due to its application in both commercial and military. In the recent times this can be attributed to the advancements in Artificial Intelligence and Advanced Algorithms. ASR takes speech as input and converts it in to text. ASR is employed in electronic dictionaries, Customer Call Centers, Voice Dictation and Query based Information Systems, Speech Transcription, Avionics, Smart Houses and Access Systems and many more areas. ASR can also be used to interact with handicapped people. ASR enables human beings interact with computers using speech rather than using keyboards & mouse (Vimalaand Radha V., 2012). ASR aims to provide natural machine interface where in speech acts input to the machine.