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1. VISVESVARAYA TECHNOLOGICAL UNIVERSITY
BELAGAVI,KARNATAKA
B. V. V. SANGHA’S
BILURU GURUBASAVA MAHASWAMIJI INSTITUTE
INSTITUTE
OF TECHNOLOGY MUDHOL-587313
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
Under the Guidance
of:
Mahananda. P. Barkol Prof .Ravi
Bashetti

2. CONTENTS:
 Introduction
 Need for silent sound
 Methods
 Advantages
 Disadvantages
 Applications
 Future Scope
 Conclusion
 References
2

3. Introduction 3
 Amazing solution for those who had lost their voice but wish to over a phone.
 It is a technology that helps you to transmit information without using your
vocal cords.
 Detects every lip movement and internally converts the electrical pulses into
sounds signals and sends them neglecting all other surrounding noise.
 Developed at the Karlsruhe Institute of Technology ,Germany

4. Need for silent sound 4
 An end to embarrassed situations such as:
 Whenever we are talking on a cell phone in a crowd , then actually we are
“not talking”, because of lots of disturbance and noise around us.
 In the case of an urgent call in a meeting , apologetically rushing out of the
room in order to answer or call the person back.

5. Methods 5
 Two Methods for using Silent Sound Technology
1.Electromyography
2.Image Processing

6. Electromyography(EMG) 6
 Technique for evaluating and recording the electrical activity produced
by skeletal muscles.
 Performed using an instrument called an “ Electromyograph ” , to
produce a record called an “ Electromyogram “.
 Electromyograph detects the electrical potential generated by muscle
cells when these cells are electrically or neurologically activated.
 Monitored signals are converted into electrical signals that can then be
turned into speech.

7. EMG – Procedure 9
 There are two types of EMG
1.surface EMG
 Four sensor are used they are vibration , pressure,
motion and electromagnetic sensor.
2.Intramuscular EMG
 A Needle electrode containing two fine wire electrodes is inserted through the skin
into the muscle tissue.
 The insertional activity provides valuable information about the state of the muscle
and its innervating nerve.

8. Electromyography Signal Generation 10
 Basic mechanism of Electromyography where the muscle activity is
analyzed by the Electromyography to generate an Electromyogram.

9. Image Processing 11
 Another way to obtain direct information on

10. Conclusion 12
 Biosensor form an interesting and varied part of
biotechnology. They have been applied to number of
analytical problems.
 They have been slow to evolve from research prototype
to the market and have not yet reached their full potential.
 Many more commercial product are excepted over the
next few years, particularly in medical diagnosis.

11. Reference 13
 https://www.scribd.com/oauth/authorize
 https://youtu.be/cWYxv2otxrs
 https://www.slideshare.net/HemanthMuckatira/biosensors-
152038684
 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986445/