2 for authentication of a user by a computer system

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Unformatted text preview: ms are much more difficult to build than speakerdependent systems. I According to another classification mechanism, voice recognition systems are of the following two types: 1. Single word recognition systems. These systems are designed to recognize only a single spoken word, such as YES, NO, MOVE, STOP, at a time. Speaker-independent systems are mostly of this type. 2. Continuous speech recognition systems. These systems are designed to recognize spoken sentences such as MOVE TO THE NEXT BLOCK. Since recognizing continuously spoken sentences is more difficult than recognizing words, continuous speech recognition systems are speaker-dependent. Although in its infancy, voice recognition systems are already being used for a wide range of applications. Some of its typical applications are as follows: 1. For inputting data to a computer system by a person in situations where his/her hands are busy, or his/her eyes must be fixed on a measuring instrument or some other object For example, a quality-control person who must use his/her hands to detect defects can call out the identification number of the sample found defective as they are detected; persons handling baggage at airports can simply speak out the three-letter destination identifier for the luggage to be automatically routed to the appropriate conveyor system; and doctors in an operation room can request certain information about a patient while operating. 2. For authentication of a user by a computer system based on voice input. 3. For limited use of computers by individuals with physical disabilities. In addition to making input of data easier, voice recognition systems also provide tremendous freedom of movement to the operator because the operator is free to stand up and move around while inputting voice data to the system. Vision-Input System A vision-input system allows a computer to accept input just by seeing an object. The input data in this case is normally an object's shape and features in the form of an image. The idea is to simulate the capability of a human vision system in a limited sense. A...
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