Application of Voice Authentication Systems in various industries
Voice or speaker recognition uses an individual's voice for identification purposes. This technology is different from speech recognition which recognizes words on the basis of their articulation. Voice recognition on the other hand is truly biometric as it depends on uniqueness of the voice tract and other biometric characteristics to identify an individual.
Voice recognition software has become the preferred technology for remote authentication because of the advances made in telecommunications and networking and its ease of integration into existing systems. Unlike speech recognition voice recognition is a dynamic process and lasts for several seconds at a time.
How does Voice Recognition Work?
The pioneering work in this field was done by the Swedish professor Gunnar Fant, who published a model that took into account the physiological traits of voice production. In order to gather inputs for this model Fant X-Rayed the voice tract during voice production. The information gleaned from this research was used by Dr. Joseph Perkell who expanded this theory by including the role of the tongue and the jaw during voice production.
The voice tract consists of the airway and the soft tissues cavities that play a major role in how sound is emanated. This in conjunction with the movement of the larynx, tongue and the jaw provides a unique tonality to each individual's voice which is leverage by the existing biometric systems to identify an individual.
Voice recognition factors text independent and text dependent speech while designing the voice recognition system. In the text dependent model the individual has to utter a password or a sequence of numbers to pass muster with the security systems. The text independent model on the other is free form and more dynamic in nature. This information is recorded and then analyzed in wave form, with time on the horizontal axis and loudness on the vertical axis. In particular characteristics like the quality, duration, pitch and intensity of the signal is studied for identification purposes.
Uses of Voice Recognition Systems
The durability and ease of implantation of voice based authentication systems have made it popular in organizations across the spectrum. Some of the applications are given below-
Resetting Passwords
The voice authentication system can be used by individuals to reset their passwords through remote voice authentication from anywhere. The flexibility of this system allows an individual to log into the system anytime and make the changes. This system has been used by banks, insurance companies to improve their productivity and efficiency.
Compliance
Voice authentication systems can be used as a tracking tool by parole officers. This tool can be used to verify whether the individual is at the mentioned place at the specified time. This helps in improving prison administration.
Caller Authentication
Typically used in a banking environment where a caller is directed to an agent or IVR after identity is verified through a voice pattern recorded at the beginning of the call. This system can be combined with two factor identification, involving a secret question, to build additional flexibility in the system.
Payment Authentication
This method can be used to prevent misuse of credit card or debit card information. This method can be used to provide credibility to online gaming platforms and mobile companies looking for innovative payment models to spread their business.
Questions and Answers
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