18-04-2013, 02:55 PM
DYNAMIC ACOUSTIC for DUMB USING EMBEDDED INTERFACE (DADEI)
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Abstract
In this materialistic world, we often are worried
about our daily routines and duties. We speak,
communicate, travel to different places for different
purposes. But, just imagine the plight of people who are
dumb. How will they convey what they want, to people?
Even if these people try to convey something we are not
patient enough to listen. Our embedded base acts as a
solution to this problem. When we produce sound from our
mouth, there are vibrations produced in the vocal chords.
The dumb produce sound that does not mean any sense in
technical terms, the output is distorted. Our system is fixed
at the lower jaw so as to sense these vibrations with an
acoustic plate. Each sound made by the dumb person is
Encoded/Decoded appropriately and the corresponding
output is compared to a reference threshold that is stored in
the microcontroller. Based on the output in the previous step
a predefined voice for each signal is interpreted and given
via a speaker which is integrated in the device.
INTRODUCTION
Communication is the important aspect of life.
Imagine the plight of a person if he/she is not able to talk.
Thus we thought of finding an appropriate solution for the
verbally challenged people and make them communicate
better.
THE INVENTION
Our system uses an acoustic plate with a connected
load cell transducer and a micro-controller chip. It also
consists of a provision for audio output. Speech processing
is done by the micro-controller chip.
WORKING
Speech of human beings is produced by the vibrations of
the larynx. Verbally challenged people’s speeches are not
legible. This is because of the improper moving of the
tongue. Thus the sound vibrations do not travel from the
larynx to the tongue. Thus when these people talk it can’t
be understood. The DADEI system is fixed at the neck of
the person who is verbally challenged. The Acoustic Plate
(AP) is capable of sensing vibrations when the person
utters something the vibrations sensed are converted to
electrical signal by the transducer integrated in the AP. As
these signals are converted to electrical signals, they are
sent to as input to the Micro-Controller (MC) chip. The
MC chip contains the International Phonetic Alphabet
(IPA) references standards with which the input is
compared. Based on the comparison result the output is
given through the audio output provision. Thus this
processes the distorted speech into proper audio speech.
The speech processing is done by the MC chip which is
installed with speech processing software for the in-built
voice. This is the working of the DADEI system.
CONCLUSION
Thus we have posed a solution which can be
implemented to reduce the plight of the verbally
challenged people so that they can move along with the
society in an amiable manner.