Researchers at the University of Washington have developed the ‘Vocal Joystick’ software, which allows disabled people to use computers in a better way. The software allows the computer to be driven by sound, in pace of the conventional functioning mouse. The difference between the Vocal Joystick and other technologies is that it does not use standard voice recognition technology and instead detects basic sounds at about 100 times a second and generates a fluid and adaptive cursor movement. It is said that the system allows users to exploit large sets of sounds for continuous and discrete movement. The Vocal Joystick does the job with the help of a microphone, computer with a standard sound card and a user who can vocalize.
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