Speech-to-Text System for Phonebook Automation

Abstract

In the daily use of electronic devices, generally, the input is given by pressing keys or touching the screen. There are a lot of devices which give output in the form of speech but the way of giving input by speech is very new and it has been seen in a few of our latest devices. The speech input technology needs a Speech-to-Text system to convert input speech into its corresponding text and speech output technology needs a Text-to- Speech system to convert input text into its corresponding speech. In the work presented, a Speech-to-Text system has been developed with a Text-to- Speech module to enable speech as input as well as output. A phonebook application has also been developed to add new contacts, update previously saved contacts, delete saved contacts and call the saved contacts. This phonebook application has been integrated with Speech-to-Text system and Text-to-Speech module to convert the phonebook application into a complete speech interactive system. The first chapter, the basic introduction of the Speech-to-Text system has been presented. The second chapter discusses about the evolution of the Speech-to-Text technology along with the existing Speech-to-Text systems. The problem statement has been discussed in the third chapter. This chapter also describes the objectives of the proposed system and the methodologies that have been followed to develop the proposed system. The fourth chapter discusses about the implementation of the proposed system. It describes the requirements for the development of the proposed system. It also discusses about the installation of the tools like Cygwin, HMM, Audacity etc. and explains the architecture of the Speech-to-Text system. This chapter describes the data preparation phase in the implementation of the proposed system. It also describes the training phases of the proposed system by monophones, triphones and tied-state triphones, using HMM Tool Kit commands and perl scripts. Along with it, the implementation of the phonebook application and Text-to-Speech module has been discussed in the last sections of this iv chapter. The fifth chapter presents the results of the developed system. In the sixth chapter, the conclusion and future scope has been discussed. The proposed system represents an idea to develop such a full fledge speech interactive phonebook automation system that can be used by blind people to use their mobile phones easily by controlling their phonebook application by speech.