MM_BSC_SOLNS_2002

MM_BSC_SOLNS_2002 - CM0340 1 CARDIFF CARDIFF UNIVERSITY...

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Unformatted text preview: CM0340 1 CARDIFF CARDIFF UNIVERSITY EXAMINATION PAPER SOLUTIONS Academic Year: 2001-2002 Examination Period: Autumn 2001 Examination Paper Number: CM0340 Examination Paper Title: Multimedia Duration: 2 hours Do not turn this page over until instructed to do so by the Senior Invigilator. Structure of Examination Paper: There are three pages. There are four questions in total. There are no appendices. The maximum mark for the examination paper is 100% and the mark obtainable for a question or part of a question is shown in brackets alongside the question. Students to be provided with: The following items of stationery are to be provided: One answer book. Instructions to Students: Answer THREE questions. The use of translation dictionaries between English or Welsh and a foreign language bearing an appropriate departmental stamp is permitted in this examination. CM0340 2 1. (a) Give a definition of multimedia and a multimedia system. Multimedia is the field concerned with the computer-controlled integration of text, graphics, drawings, still and moving images (Video), animation, audio, and any other media where every type of information can be represented, stored, transmitted and processed digitally. A Multimedia System is a system capable of processing multimedia data and applications. 2 Marks - BOOKWORK (b) What are the key distinctions between multimedia data and more conventional types of media? Multimedia systems deal with the generation, manipulation, storage, presentation, and communication of information in digital form. The data may be in a variety of formats: text, graphics, images, audio, video. A majority of this data is large and the different media may need synchronisation -- the data may have temporal relationships as an integral property. Some media is time independent or static or discrete media: normal data, text, single images, graphics are examples. Video, animation and audio are examples of continuous media 4 Marks Bookwork (c) What key issues or problems does a multimedia system have to deal with when handling multimedia data? A Multimedia system has four basic characteristics: Multimedia systems must be computer controlled. Multimedia systems are integrated. The information they handle must be represented digitally. The interface to the final presentation of media is usually interactive. CM0340 3 Multimedia systems may have to render a variety of media at the same instant -- a distinction from normal applications. There is a temporal relationship between many forms of media (e.g. Video and Audio. There 2 are forms of problems here Sequencing within the media -- playing frames in correct order/time frame in video Synchronisation -- inter-media scheduling (e.g. Video and Audio). Lip synchronisation is clearly important for humans to watch playback of video and audio and even animation and audio. Ever tried watching an out of (lip) sync film for a long time?...
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MM_BSC_SOLNS_2002 - CM0340 1 CARDIFF CARDIFF UNIVERSITY...

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