Transcript Multi-Access Public Address Transmitter The ultimate solution to

NIGERIA ENGINEERING INNOVATION PRIZE (NEIP) 2015
CATEGORY: INFORMATION & COMMUNICATION TECHNOLOGY (ICT)
PROJECT TITLE
The ultimate solution to public
communication in Nigeria
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ABSTRACT
Noises have unavoidably, over the years, been contaminants
of sound/effective communication. In a bid to project sound
out of noise, inventors & scientist have developed various
communication systems, which though increased the range
of human voice, but also have invariably/rather added more
noise to our ecosystem. If we continue this way, as
population increases geometrically, our noises would
invariably increase astronomically, what fate does this
prepare for our dear future?
Nonetheless, here is a good news that the era of noise is
soon over. The good news is: “Multi-Access-Public-AddressTransmitter is here, which is an indigenous innovation (
though still an idea, but yet with established & convincing
study & experiments, it will soon be in production), it
eliminates (as much as possible) the need & stress for large
sound-producing systems and instead makes sound
(speeches) available to the individual-who-needs-it, in the
way he needs it, and also to as many-as-need-it.”
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INTRODUCTION
 Underground noises
An hindrance to effective communication
 Sitting at the rear seats
Another limitation to communication
 Noise Pollution
A worldwide problem
 This project seeks to proffer a solution to these problems
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EXISTING TECHNOLOGY
Public Address systems
Loudspeakers
Megaphones
Walkie Talkie
PA over IP system
A public address system, also known as "PA" system is an
electronic sound amplification system, whose simplest form is
the combination of microphone, a modestly powered mixeramplifier and one or more loudspeakers that are used to
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reinforce a given sound.
MY SOLUTION
HOW IT WORKS
•• This
Any
audience
within
the
then

eliminates
the
largecan
components
Place
the
device
at
avenue
convenient
place
Thedevice
device
automatically
transmits
the
Speak
to your
microphone,
or
connect
receive
andcommon
hear youPA
audibly
and
clearly using
used
in
the
system
(particularly
the
your
music
player
wirelessly
to
the
device
audio
signal
wirelessly
into
the
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his smartphone, and
radio,
loudspeaker,
earpiece
mixer-amplifiers
the
large loudspeakers)
ADVANTAGES
 Wireless & Portable
 Multi-device compatibility
 Cheap
 Reduces Noise Pollution
 Hear @ your pace
 Speak @ ease
 Low energy consumption
 Private talk is possible
 Safe sound levels
 Two-way communication
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WORKING PRINCIPLES
FM/AM Transmission
Bluetooth Input
Other features
 LCD Screen
 DC Rechargeable battery
 Automatic channel finder
 Operational via a mobile app
The
device
also
uses the
radio
The
device
employs
Amplitude
The device
uses frequency-modulation
technology
called
frequency-hopping
Modulation
(AM) the
foraudio
simple
data
(FM), to transmit
signal
as
spread
spectrum,
this
allows
you
to
transmission
“title of
sermon”,
radiowave (such
into as the
surrounding
connect
a microphone, CD/mp3
“preachers’
atmosphere,name” , “bible references”
player,
etc.serve
via bluetooth,
etc.). It Headset,
would also
as audio
though
it still yet allows for
cable/USB
amplitude-modulation
when
FM
connection.
channels might be crowded.
Thus, the device has many input devices compatiblity (via
bluetooth), as well as compatibility with many output devices (large
audience via FM players). This makes it multi-access
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APPLICATIONS
 Schools
 Homes
 Churches
 Events
 Companies
 Outdoor
 Assistive listening
Somewhere, Anywhere, Everywhere
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FURTHER PUSH…
 Digital & Multimedia transmission
This would enable visual transmissions such as CCTV
captures, Slides and videos.
 Multiple input, multiple outputs
Multiple-input-multiple-outputs (MIMO), this when
technically
coupled with OFDM (Orthogonal
Frequency Division Multiplexing), could output several
medias in one channel, from which an audience can
choose which one(s) to listen to
 Hearing impairment aid
The device can also assist hearing aids, even in most
extreme cases of deafness. The device will input the
voices in the environment, convert into magnetic field
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by hearing-loop, this magnetic field is then transmitted
IMPACT
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CONCLUSION
Technology has kept evolving over the years, which has contributed
to the advanced countries being where they are today.
The likes of Alexander Graham Bell, Guglielmo Marconi , Hedy Lamarr
and George Antheil among many other white scientists have done a
lot, it’s high time for Africans to join the list.
In this ‘dark’ part of the world, we have lots of predominant
problems, one of which is public communication. We don’t have
access to PA Systems in our classrooms, indoor events, and public
places (due to the cost, the importability, or incessant power supply)
and yet, these PA systems we import still add their adverse effects of
noise pollution.
It is in this heart-borne grieve that I came up with this innovative idea
to solve our problem our own way: the Multi-Access-Public-AddressTransmitter
This innovation has a lot of potentials, some of which include
wholesome business opportunities, environmental impacts, asNEXT
well as
Thanks for staying tuned.
Presented by:
The Master-mind behind Multi-Access PA Transmitter
Student at Obafemi Awolowo University, Ile-Ife, Nigeria.