Digital notice board using Smart Phones- Speech Recognition Voice command

Abstract

Now a days notice board has become an important thing in institutes/organization or public places like railway stations, bus stands and hospitals. But to use the paper notices stacked on a notice board is a time taking and expensive process and there is wastage lot of time, paper and labour. The notice board is used to display the information in an effective way to the people, but to update the messages instantly is not easy on the notice board. In this paper we have proposed and implemented an advanced Hi-Tech wireless Notice Board. An Android application of smart phones or tablet which is connected to Bluetooth (HC-0S) can be used to display the latest information by enhancing the system. A low cost programmed microcontroller (arduino uno) is used at the receiver to receive and display messages in the LCD display. Instead of sticking notices manually on a notice board the authorized user can speak and the verbalized voice is sent through a Bluetooth and displayed on the LCD screen. In this project we are using a flexible and most successful speech recognize technique called as Hidden Markov Model(HMM) to recognize the speech for voice and then that recognized sampled speech voice are processed identified as a verbalized text done by connecting to a google's server via internet. And the speech is inputted from a microphone and only an English message has taken as an input for our application and it is online speech to text conversion.