This chapter deals with the objective and unique features of the project and the organization of the report.
The objective of the project work is to build an aid for physically challenged people to enable them operate normal daily life gadgets easily and conveniently using a voice recognition system and embedded controllers. The application chosen is on GSM MODEM, on which basic mobile phone operations are performed.
1.3 EXISTING TECHNOLOGY
In today’s generation mobile phone has become essential equipment for communication. In mobiles we have a special feature called voice tag which helps a user to store voice note for a corresponding contact. Whenever the user repeats that voice note the corresponding number of that contact will be dialed. This makes the user to call the numbers using their voices easily.
1.4 DRAWBACKS OF THE EXISTING SYSTEM
In currently existing technology we cannot call or store a new number in the database using voice input. The reason is that when you give some voice inputs it simply samples and stores it in the form of digital data. It doesn’t have the capacity to identify the characters present in that voice input. This has been the major drawback because all programming language requires a string of characters, which helps in doing necessary operation like storing a name or number.
1.5 HOW TO OVERCOME THIS DRAWBACK
We have solved this problem by simply allocating separate voice tags for all alphabets, numbers and some special commands. So, whenever a person wants to perform any operation he will simply say the required command followed by spelling the required characters one after the other.
During the time duration between each character that are being spelled out, the character tag will be identified and the corresponding characters will be generated in the microcontroller. After recognizing the required command (a set of characters) to accept voice input, the characters that are recognized will be converted into string. This string of characters will then be used to do the required operation like storing, calling, retrieving etc.
1.6 UNIQUE FEATURES OF THE PROJECT
· Single chip voice recognition circuit capable of recognizing characters to generate the string of characters with the help of microcontroller.
· Can be operated in any language as the user’s wish.
· Highly secured as the user alone knows what is the language used to operate the kit.
· Unique phonebook feature operated by voice.
· Information about the caller.
· Basic mobile phone operations like storing, retrieving, deleting and calling can be performed.