Telephonic Vowel Recognition in the Case of English Vowels

Introduction

Vowel recognition is the focus of automatic speech recognition (ASR) and speaker identification systems because of spectrally well defined characteristics of vowels. The ability to recognize speech improves significantly by efficient vowel recognition, both by humans as well as by ASR systems [1]. Therefore vowel recognition has an important role in speech processing systems. Now-a-days telephonic vowel recognition has gain lot of research interest as telephones have been revolutionized the personal and professional communication. Therefore, in this work emphasis is given to vowel recognition from telephonic speech. Telephonic vowel recognition of English language is a challenging task as the same vowel has got different contextual pronounciation. Telephonic speech recognition is greatly benefitted by efficient vowel recognition. Recognition of vowels from telephonic speech has applications in speaker recognition for critical banking transactions, identification of criminals, access control systems and forensic applications. In the field like Biometrics, goal of vowel recognition is to verify an individual’s identity based on his or her voice. This is one of the trusted means of authentication as voice is one of the most natural forms of the communication.