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EQUIPMENT FOR PHYSICALLY AND MENTALLY CHALLENGED PERSONS
ABSTRACT:-
Today’s in this modern world it is very difficult to made a communication between blind, deaf and dumb.
It is a major drawback in order to eradicate this drawback, we are trying to produce a new communication by using wireless technology in order to communicate each other.
INTRODUCTION:-
The communication between the blind and deaf and dumb persons are made easier by using method of WiMAX wireless technology.
The text to voice converter and the voice to text converter plays a vital role in this process.
The voice of the blind person is converted to text and received by the deaf and dumb persons. And
The text of the deaf and dumb is converted into voice and received by the blind people. Hence this forms of communication is easy way of communication between blind and the dumb person.
BASIC NEEDS:-
i. Text to voice converter.
ii. Voice to text converter.
iii. WiMAX wireless technology.
WiMAX wireless technology :-
WiMAX stands for Worldwide Interoperability for Microwave Access.
It is a telecommunications technology that providing wireless data over long distances in a variety of ways, from point-to-point links.
It is based on the WirelessMAN (IEEE 802.16) standard.
WiMAX is a highly scalable, long-range system, covering many kilometers using licensed spectrum to deliver a point-to-point connection to the Internet from an ISP to an end user.
WiMAX can be used to provide a wireless alternative to cable and DSL for broadband access, and to provide high-speed data and
Telecommunications services. WiMAX can also be used to Connect many Wi-Fi hotspots with each other and also to other parts of the Internet.
When using WiMAX device with directional antennas, speeds of 10 Mbit/s at 10 km distance is possible, while for WiMAX devices with omni-directional antennas only 10 Mbit/s over 2 km is possible. There is no uniform global licensed spectrum for WiMAX, although three licensed spectrum profiles are being used generally - 2.3 GHz, 2.5 GHz and 3.5 GHz [wiki].
WiMAX would operate similar to WiFi but at higher speeds, over greater distances and for a greater number of users.WiMAX could potentially erase the suburban and rural blackout areas that currently have no broadband Internet access because phone and cable companies have not yet run the necessary wires to those remote computer.
Comparison with Wi-Fi:-
Wi-Fi is a shorter range system and typically hundreds of meters,and it is typically used by an end user to access their own network. But WiMAX is longe range system.
Wi-Fi is low cost and is generally used to provide Internet access within a single room or building. For example, many coffee shops, hotels, railway stations and bus stations contain points providing access to the Internet for customers.
Wireless Routers which incorporate a DSL-modem or a cable-modem and Wi-Fi access point, often set up in homes.

PRESENTED BY
VIJAYAKUMAR T.S.

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EQUIPMENT FOR PHYSICALLY AND MENTALLY CHALLENGED PERSONS
ABSTRACT
• Today's in this modern world it is very difficult to made a communication between blind, deaf and dumb.
INTRODUCTION
• The communication between the blind and deaf and dumb persons are made easier by using method of WiMAX wireless technology.
• The text to voice converter and the voice to text converter plays a vital role in this process.
• GOAL
• To provide a communication between the Blind, Deap and Dumb peoples.
BASIC NEEDS
• Text to voice converter.
• Voice to text converter.
• WiMAX wireless technology.
• wireless technology
• WiMAX stands for Worldwide Interoperability for Microwave Access.
• It is a telecommunications technology that providing wireless data over long distances in a variety of ways, from point-to-point links.
• It is based on the WirelessMAN (IEEE 802.16) standard.
HOW WiMAX WORKS
• WiMAX
system consists of two parts
• WiMAX tower:-
This tower is similar in concept to a cell -phone tower-A single WiMAX tower can provide coverage to a large area—as big as 3,000 square miles(~8,000 square km).
WiMAX receiver :-
The receiver and antenna could be a small box or a PCMCIA card ,or they could be built into a laptop the way WiFi access is today.
• The receiver and antenna could be a small box or a PCMCIA card ,or they could be built into a laptop the way WiFi access is today.
BLOCK DIAGRAM
This block diagram indicates blind people can communicate with
dumb and deaf peoples
TEXT TO VOICE CONVERTER
• A system which takes input as a sequence of words and convert them to speech
TEXT PREPROCESSING
• Input : string for characters
• Output : string of diaphone symbols.
Diaphone symbols means union of two vowel sounds and pronounced separately.
BLOCK DIAGRAM
NUMBER CONVERTER
• Replace numerals with their textual versions. (100- one hundred)
• Handle fractional and decimal numbers (0.25 –point two five)
ACRONYM CONVERTER
• Replace acronyms with single letter components. (a.b.c-abc Future development)
• Change abbreviation to full textual format
WORD SEGMENTER
• Divide sentence into word segments and separate segments.
Segments can be
• A single word
• An acronym
• A numeral
WORD TO DIPHONE CONVERTER
• The Purpose of Word to Diphone converter is
- to translate words to their Diphone representation
- Resource
THE MULTI-LEVEL DATA STRUCTURE
It Contains all the necessary data for the next sub-system
• Word
• Diaphone representation
• Prosodic parameters for each diaphone
• Allows for modulation
• PROSODY
• Prosody is the rhythm , stress , and intonation of speech.
DIPHONE RETRIEVAL
• Database of recorded diaphones.
• Every diaphone matched with text file.
• Reference to specific components with in the waveforms.
• Store diaphone waveform and prosodic parameters in variable.
ACOUSTIC MANIPULATION
• Recognizes wave files
• Load, play and write
• Vast array of signal processing tools
• Built in function
• Ease of debugging
CONCATENATION
• Diaphones-word
Using pitch synchronous overlaps and adds at the joining ends Ensures smooth transition
VOICE TO TEXT CONVERTER
• It takes blind person voice as input and it is received by deaf and dumb person using WiMAX wireless technology.
• We are familiar with the process of determining the frequency of the voice of a human being. It’s range is from 30Hz to 300KHz.the main part in the converter is compactor circuit.
CONCLUSION
• Dumb and deaf person typing the words (text message) that is to be convertor in the voice form by means of text to voice convertor
• By using the specified wireless technology that voice is to be transmitted through the receiver side.

how much will be cost of hardware of dis project? i need it. pm me

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