Voice Biometrical Match of Mother and Daughter for Forensic Purpose

Speech Recognition known as Automatic Speech Recognition (ASR) is the procedure of converting speech signals to a sequence of words through methods of algorithms accomplished as a computer programme [1]. Automatic speech recognition enables the computer to identify words that are spoken into microphone or a telephone. Speaker dependent system are those systems that identify or recognized only one person voice and those systems that recognized the voice of multiple users are known as speakers independent system [2]. Automatic Speech Recognition system (ASR), is an important branch of information and communication technology as it is used to transform spoken words into text and also has dictation, security control, and foreign language translation [3]. Voice production process begins with the production of airflow in the lungs, which is regulated by the vocal folds. Lungs, larynx, and vocal tract are the main organs for speech production. Lungs supplies air pressure signals to the larynx. The larynx regulates the airflow which is supplied by the lungs. The glottis, fluctuates with the movement of the vocal folds, and thus regulates the flow of air through them. Larynx also known as a self-vibrating acoustomechanical oscillator. Various tiny muscles present in larynx also control the oscillation of vocal folds. Some of these tiny muscles regulate the rest position of the vocal folds while others regulate their tension [4]. The vocal cords become distressed and pulsate by the airflow when lungs expel the air. The vocal folds alternately trap and release air causing a cycle of vibrations called Glottis Cycle. When the glottis opens, the air explodes through the vocal