The document discusses silent sound technology, which allows people to communicate verbally over the phone without actually speaking. It does this through two methods - electromyography, which monitors muscle movements related to speech, and image processing of lip movements. The technology was first conceptualized in a 1968 film and was demonstrated at a 2011 trade show in Germany. It has potential applications for situations where silent communication is necessary, such as in noisy environments or for people with speech impediments. The document provides details on how the methods work and potential features and uses of the silent sound technology.

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Under the Guidance of:
Mr. Ravikumar.K
Presented by:
Suman.G.Savanur

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Contents
Introduction1
Origination2
Recent event3
Electromyography4
Image Processing5
Features6
Applications7
Conclusion8

3. Introduction
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It is a technology that helps you to transmit information
without using your vocal cords.
This technology aims to notice lip movements & transform
them into a computer generated sound that can be
transmitted over a phone.
Hence person on other end of phone receives the
information in audio.

4. Need For The Technology
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An end to embarrassed
situations such as:
A person answering his silent,
but vibrating cell phone in a
meeting, lecture or performance,
and whispering loudly.
In the case of an urgent call,
apologetically rushing out of the
room in order to answer or call
the person back.

5. Origination
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The idea of interpreting silent speech electronically or
with a computer has been around for a long time, and was
popularized in the 1968 Stanley Kubrick science-fiction film
„„2001 – A Space Odyssey”.
„„2001 – A Space Odyssey”

6. Recent Event
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In the year 2011 at Cebit, one of the largest trade fair, a new
concept called “SILENT SOUND TECHNOLOGY “was
demonstrated.
This technology is being developed by scientists of Karlsruhe
Institute of Technology ( KIT ), Germany.

7. How We Speak…
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Recently, its proved that the articulator muscle become
active irrespective of whether air passes through them or
not.

8. Methods
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Two Methods for using Silent Sound Technology
1. Electromyography
Monitoring tiny muscular movements that occur
when we speak.
Signals are converted into electrical pulses that
can then be turned into speech, without a sound
uttered.
2. Image Processing
Converting digital data tape into a film image with
minimal corrections and calibrations.
Large mainframe computers employed for
sophisticated interactive manipulation of the data.

9. Electromyography (EMG)
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The electromyography is a technique which monitors tiny
muscular movements and pulses generated by it.
This technique is for evaluating and recording the
electrical activity produced by skeletal muscles.

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Electromyographic sensors attached to the face
records the electric signals produced by the facial muscles,
compare them with pre recorded signal pattern of spoken
words.
When there is a match that sound is transmitted on to
the other end of the line and person at the other end listen to
the spoken words

11. Image Processing
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Analysis of remotely sensed data is done using
various image processing techniques and methods that
includes:
Analog image processing
Analog processing techniques are applied to
hard copy data such as photographs or printouts. It adopts
certain elements of interpretation, such as primary element,
spatial arrangement etc.,
Digital image processing

12. Digital Image Processing
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Digital Image Processing involves a collection of techniques
for the manipulation of digital images by computers. It contains
some flaws. To overcome the flaws and deficiencies in order to
get the originality of the data, it needs to undergo several steps
of processing.
Digital Image Processing undergoes three general steps:
Pre-processing
Display and Image enhancement
Information extraction

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Pre processing
Image enhancement
Information extraction
Flow Chart

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Pre-processing
Pre-processing consists of those operations that
prepare data for subsequent analysis that attempts to
correct or compensate for systematic errors.
Then analyst may use feature extraction to reduce
the dimensionality of the data.

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Image enhancement
It improves the interpretability of the image by
increasing apparent contrast among various features
in the scene.
The aim of image enhancement is to improve the
interpretability or perception of information in digital
data for human viewers.

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Information extraction
In this remotely sensed data is subjected to quantitative
analysis.
Information analysts working on goal of
database creation. IE is used in evaluating, and
comparing different Natural Language Processing
technologies.
The final result of the analysis consists of maps
or images, data and a report. Then these are converted
to corresponding signals.

17. Features
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Some of the features of silent sound technology are
• Native speakers can silently utter a sentence in their language,
and the receivers can hear the translated sentence in their
language.
• The translation technology works for languages like English,
French and German.
• Allow people to make silent calls without bothering others.

18. Applications
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• In space this technology can be best utilized by astronauts.
• Silent calls even if we are standing in a crowded place.
• Helpful for people without vocal cord or who are suffering from
Aphasia.
• Communication in nasty environment and even in the noisy
environment.
• To tell a secret PIN no. , or credit card no. on the phone.
• Can be applied in Military for communicating secret/confidential
matters.

19. Conclusion
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This incredible technology is soon going to make it in
our cell phones.
Expected in the next 5 - 10 years. Once launched, will
have a drastic effect and with no doubt, will be widely
used.
Silent Sound Technology, one of the recent trends in the
field of information technology implements “Speak Without
Talking”.

20. Bibliography
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•"Authorities seize gadgets during patent raid at German tech fair".
International Herald Tribune. 2009-03-29. Retrieved 2011-12-
17.http://en.wikipedia.org/wiki/CeBIT.
• "CeBIT – Facts and Figures – History of CeBIT" Cebit.de. 1986-03-12.
Retrieved 2011-12-17 . http://csl.ira.uka.de/fileadmin/pressein.
•http://www.scribd.com/doc/45672295/silent/Silent-Sound-Technology.
•R. Fisher, K Dawson-Howe, A. Fitzgibbon, C. Robertson, E. Trucco (2005).
Dictionary of Computer Vision and Image Processing. John Wiley. ISBN 0-470-
01526-8.
•Paper by http:// www.5inetune.com,
http://www.telecomspace.com/content/cebit- 2010/silent sound technology.

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