optical communication and networking by gayatri pdf reader

The silent vocoder consists of an HMM based visuo-phonetic decoder, audio-visual selection unit This visual speech signal is then given to a silent vocoder. Lip reader then compares the input image with pre- stored images and if a match is found it generates a visual speech signal. The captured images of lip and tongue movement are then given to lip reader. Here image of vocal cords are taken from ultrasound probe and along with this the movement of lips are captured using camera. In the existing system it involves use of ultrasound probe, camera and a silent vocoder.

Here normal person can hear the audio of the spoken word and hearing impaired person can see the word displayed on the screen.Ĭompared with pre-prepared database and releases output such as text and voice. The listener on the other end can be either a normal person or a hearing impaired person. Using the smart assistive device it decodes the movement of lips and then convert it to text and audio. This device can help people who have undergone surgery such as laryngectomy, a surgical removal of larynx which is usually done when person suffers from a critical accident or throat cancer. Smart assistive device can help speech impaired people to effectively communicate with others. But others who does not have the prior knowledge of what sign language is, find it very tough to understand what speech impaired person is trying to express. Speech impaired people are greatly affected as they cannot communicate effectively as in the case of normal people by verbal means.Here speech impaired people communicate using sign language to communicate with others.

But some humans are unfortunate to have this blessing. Marian Engineering College Trivandrum, Keralaĭepartment of Electronics and Communication Engineering Marian Engineering CollegeĪbstract:- One of the beautiful creation of god is human beings who have been fortunate to have senses like vision and speech. Smart Assistive Device for Speech Impaired using Silent Sound Technologyĭepartment of Electronics and Communication Engineering

Optical communication and networking by gayatri pdf reader