Silent sound technology allows for communication without using vocal cords by transforming lip movements into computer-generated sound. It was first popularized in 1968 and demonstrated in 2010. The technology uses electromyography to monitor tiny muscle movements, which are converted into electric signals. Image processing is also used. Applications include use by astronauts, in crowded places, and for those who have lost their voice or want confidential calls. However, the technology is difficult to apply to some languages and not yet practical for widespread use as it requires multiple electrodes attached to the face. Engineers claim it works with 99% efficiency.

1. PRESENTATION
ON
SILENT SOUNDTECHNOLOGY
V. SunilReddy
CSE-D
16D41A05P2
SriIndu Collegeof
Engineeringand
Technology
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2. Contents:
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•Introduction
• Need of silent sound technology
• Origination
• Methods
• Applications
• Conclusion

3. WHAT IS SILENT SOUND TECHNOLOGY ?
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•Technology that helps to transmit
information without using vocal cords.
•It transform lip movements into a
computer generated sound.
•Hence person on other end of phone
receives the information in audio.

4. WHY WE NEED SILENT SOUNDTECHNOLOGY???
•For a better way of communication in noisy public
place.
•Gives a better and new way of communication for
those peoples who lost their voice.
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•Helps peoples for giving any confidential
information over a phone without worrying about
others.
•As the electronic pulses are universal and can be
immediately converted into any other language of
your choice.

5. ORIGINATION:
•The idea of interpreting silent speech with computer
was popularized in the year 1968.
•“SILENT SOUND TECHNOLOGY” was demonstrated
in CEBIT-2010 .
•This technology is being developed by scientists of
Karlsruhe Institute of Technology (KIT), Germany.
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6. HOW WE SPEAK…..???
•When we generally speak
aloud, air passes through Larynx
and tongue. Words are produced
using articulator muscle in
mouth and jaw region.
•Even by saying words without
producing sounds weak electric
current are sent from brain to
speech muscles.
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7. -:METHODS:-
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•“SILENT SOUND TECHNOLOGY” is processed
through some way or methods….
• ELECTROMYOGRAPHY(EMG)
• IMAGE PROCESSING

8. Silent
Vocoder
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Ultrasound
probe
speech
ELECTROMYOGRAPHY:
•It is a technique which monitors tiny
muscular movements and pulses generated by
it. The transducers involved converts pulses
into electric signals.
silent/ laryngectomized speaker
camera

9. HOW IT WORKS…..????
•A needle electrode or a needle
containing two fine wire
electrodes is inserted through
the skin into the muscle tissue.
•Science skeletal muscles
differs in internal structure so
electrode has to be places at
various location to get accurate
signals.
•Thus by this way speech can be communicated
without sound. 9

10. IMAGE PROCESSING:-
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•The simplest form of digital image processing
converts the digital data tape into a film image
with minimal corrections and calibrations.
•Then large mainframe computers are
employed for sophisticated interactive
manipulation of data.

11. Continued….
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Analysis of remotely sensed data is done
using various image processing techniques
and methods that includes:
• Analog image processing
• Digital image processing

12. -:APPLICATIONS:-
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• For astronauts.
• Effective calls in crowded place.
• Can use without vocal cord.
• Useful to Aphasia (speaking disorder ).
• It gives confidentiality.
• Since the electrical signals are universal they can be
translated into any language(currently being German, English
& French).
•In military works.

13. -:RESTRICTIONS:-
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•Technology is difficult to apply in some language ( Chinese).
•Complicated to identify person and emotions.
•This device presently needs nine leads to be attached to our
face which is quite impractical to make it usable.

14. •Engineers claim that the device is working
with 99 percent efficiency.
•Silent Sound Technology one of the recent
trends in the field of information technology
implements “Talking without Talking”.
•It will be done of the innovating and useful
technology and in future this technology will
be use in day to day life.
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-:CONCLUSIONS:-

15. -:REFERENCES:-
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• www.ebookbrowse .com
• www.authorstream.com
• wikipedia

16. THANKS
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