What it is……..? 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
Need for Silent Sound 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, “ I can’t talk to you right now” . In the case of an urgent call, apologetically rushing out of the room in order to answer or call the person back.
Origination The idea of interpreting silent speech electronically or with a computer was popularized in the 1968 Stanley Kubrick science- fiction film ‗‗2001 – A Space Odyssey‖ In 2010 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 .
HOW WE SPEAK……….? • When we generally speak aloud, air passes through larynx & the tongue. Words are produced using articulator muscle in the mouth & jaw region.
Recently it is proved that when we are about to speak due to reflex action of muscles the articulate muscle becomes active irrespective of wheter air is passed through them or not Even by saying words without producing sound weak electric currents are sent from brain to speech muscles. This phenomenon is called ELECTROMYOGRAPHS
Methods 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.
ELECTROMYOGRAPHY It is a technique which monitors tiny muscular movements and pulses generated by it . The transducers involved converts the pulses into electric signals . 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
Working of E A nlee edlc e t c r onto ai m ning y two o fig ner-a wir p ed h ele y ctrodes is inserted through the ski n i nto the muscle tissue. Then the electrical activity when the muscle is at rest is observed. Each electrode track gives only a very local picture of the activity of the whole muscle Because s keletal muscles d ifer in the inner structure, the electrode has to be placed at various locations to obtain an accurate signal. Thus by this way the speech can be communicated without sound.
SILENT SPEECH INTERFACES
Working of Electromyography
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 the data. In the present context, overhead prospective are employed to analyze the picture.
Image Processing techniques
Analysis of remotely sensed data is done using various image processing techniques and methods that includes: Analog image processing Digital image processing
Analog image Processing Analog processing techniques i s applied to hard copy data such as photographs or printouts. It adopts certain elements of interpretation, such as primary element, spatial arrangement etc., With the combination of multi-concept of examining remotely sensed data in multispectral, multitemporal, multiscales and in conjunction with multidisciplinary, al ows us to make a verdict not only as to what an object is but also its importance. Apart from these it also includes optical photogrammetric techniques al owing for precise measurement of the height, width, location, etc. of an object.
Digital image processing Digital Image Processing involves a collection of techniques for the manipulation of digital images by computers. It contain 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 enhancement Information extraction
Features 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. It appears as if the native speaker produced speech in a foreign language. The translation technology works for languages like English, French and German, except Chinese, where different tones can hold many different meanings. Allow people to make silent calls without bothering others.
Applications The Technology opens up a host of application such as mentioned below Helping people who have lost their voice due to il ness or accident. Tel ing a trusted friend your PIN number over the phone without anyone eavesdropping — assuming no lip-readers are around. Silent Sound Techniques is applied in Military for communicating secret/confidential matters to others.
CONCLUSION: • Thus Silent Sound Technology, one of the recent trends in the field of Information technology implements ‘Talking Without Talking’. • It wil be one of the innovative and useful technology and in mere future this technology wil be of use in day to day life.