Multimedia Systems

Question 1

what are the seven types of media

Answer 1

Text

Hypertext

Numbers

Audio

Images

Animation

Video

Question 2

what the different modes of display

Answer 2

Screen

Speakers

Question 3

what is the main advantage of multimedia over print

Answer 3

Multimedia allows for more interaction with the content and display the information in a more variety of options than print

Question 4

What types of media are involved with storing

Answer 4

Images

Audio

Video

Question 5

what is the formula for Image storage

Answer 5

File size = (Horiztonal x vertical x bit depth) / 8

Question 6

how to convert file sizes from bytes to kb

Answer 6

divide by 1024

Question 7

what is sampling rate

Answer 7

the number of times a sample is taken of sound

Question 8

what is bit depth

Answer 8

the number of bits per pixel. This is determine by how many colours are possible in the image

Question 9

what is the sample size

Answer 9

the bit resolution of each sample

Question 10

what is the formula for Audio Storage

Answer 10

File size = (Sample rate x Sample x time)/8

Question 11

what is the frame rate

Answer 11

the number of frames of the video shown each second

Question 12

what is the formula for video storage

Answer 12

File size = Frame rate x time in seconds x frame size

note that the frame size is calculated the same way as an in image

Question 13

what is the difference between mono and stero audio files

Answer 13

stero audio files have double the size of mono files

Question 14

what are the two types of animations

Answer 14

Cell-based and path-based

Question 15

what is cell-based animation

Answer 15

involves drawing and displaying individual frames or cells. Each frame is stored separately and loaded into a graphics page of primary memory. It is the traditional method of animation

Question 16

what is path-based animation

Answer 16

it involves displaying the movement of objects onto a fixed background in a particular sequence or path. the pixels in the background do no change, only those for the moving object. This saves memory and processing time. This is done by a process called tweening which generates the itermediate frames between two objects in computer animation from the path.

Question 17

What is morphing

Answer 17

it is the smooth change between two different images. It changes the shape, size, dimension, and colour of one image into those of another.

Question 18

what is warping

Answer 18

warping involves transforming or distorting a portion of the image. it divides the image into objects that can be manipulated

Question 19

What are some people in multimedia systems

Answer 19

Content providers

System designers

Project managers

Technical staff

Question 20

What is a content provider

Answer 20

They are people who provide the material for the multimedia product. This may include text, graphics sketches or final drawings, video footage and audio tracks

Question 21

What is a system designer

Answer 21

plans and organises the hardware and software required for the presentation

Question 22

What is the project manager

Answer 22

organises the scheduling of various components of the
product, provides overall supervision of the
components and ensures that all components are delivered on time.

Question 23

what is technical staff

Answer 23

includes a variety of artists and technicians who edit the graphic and video material, text and all other material into appropriate formats for the final document. It also includes layout and design personnel who work to develop an overall theme and look of the product

Question 24

What are the major areas of multimedia systems

Answer 24

Education and training

Leisure and entertainment

Information

Vitrual reality and simulations

Question 25

What are education and training multimedia systems

Answer 25

They are multimedia systems that are very effective system that help people to learn. A good multimedia product users different media types to maintain te user's interest. An example product is Computer-based training products.

Question 26

What a Leisure and entertainment Multimedia systems

Answer 26

they are multimedia systems designed for leisure and entertainment. They are generally computer games.

Question 27

What is Virtual realtiy

Answer 27

VR for short, is the use of computer modelling and simulation to enable a person to interact with an artificial envrionment. an example of multiemdia systems of VR and simulations are Flight simulations.

Question 28

What are three design priniciples

Answer 28

Consistent Navigation Simple

Question 29

What are the three accepted design principles to format text.

Answer 29

Characters: avoid using too many fonts Screen layout: Appropriate conventions exist for column width, alignment, line spacing, character spacing, indentation, hyphenation and kerning Text colour: Colour contributes to the style and theme of a multimedia product and draws attention to the text.

Question 30

What are the different Screen technology

Answer 30

Cathode ray tube (CRT) Liquid crystal displays (LCD) Organic Light-Emitting Diode (OLED) Touch screens

Question 31

What the three different types of projectors

Answer 31

Digitial Light Processing (DLP) Liquid Crystal displays (LCD) Liquid crystal on silicon (LCos)

Question 32

What are the four types of doccumentation for Presentation Software

Answer 32

On-screen presentations Audience handouts Overhead Transparencies Speaker's notes

Question 33

What is on-screen presentations

Answer 33

they are slides displayed on a monitor or projected onto a screen.

Question 34

What is audience handouts

Answer 34

They are images of two or more slides on a page that are given to people who attend the presentation.

Question 35

What is Speaker's notes

Answer 35

they are the notes the speaker needs when discussing the slides.

Question 35

What is Overhead transparencies

Answer 35

They are slides printed as an overhead transparency in black and white or in colour using either portrait or landscape orientation.

Question 36

What is a transition

Answer 36

it is special effect used to change from one image or screen to another.

Question 37

What are the different application software

Answer 37

Word processors Spreadsheets Graphics software Audio software Video software Project management software.

Question 38

What is application software

Answer 38

it is software that is used for a specific task.

Question 39

What is authoring software

Answer 39

It is software used to combine text, graphics, animation, audio and video into a multimedia product. The software also allows the user to create interactivity.

Question 40

What is animation software

Answer 40

Software that takes individual images and creates the illusion of movement

Question 41

What is the difference between a Bitmap graphic and a Vector Graphic

Answer 41

A Bitmap graphic is comprised of a collection of bits where as a Vector graphic is created using mathematical definitions. Bitmap images become distorted and pixelated when resized whereas Vectors can be scaled withouth any loss in quality.