Multimedia

1. What do you mean by multimedia and multimedia systems?
2. What are the characteristics of a multimedia system?
3. Define a multimedia application. Give examples?
4. What are the key issues that multimedia systems need to deal with?
5. Point out the desirable features of a multimedia system.
6. What are the essential hardware and software components required for a multimedia system?


7. How is text measured? Define the concept of Typeface.
 (Ans. Text is measured in points. 72 points equal 1 inch. Point size of the type is determined by measuring the height of the type body. The point size is found by measuring the distance from the uppermost limit of an upward-reaching letter, such as b, f, h, k, or l, to the lowermost limit of a downward-projecting letter, such as g, j, p, or y. Type faces are the graphic representations of the alphabet, numbers, and special characters and usually vary by type size and style.)

8. What are serif and sans-serif fonts?
(Ans. Serifs are the ending strokes on the arms, stems, and tails of some typeface designs. If a typeface has serifs, it is termed a roman typeface. Sans-serif fonts do not contain the ending strokes. They are easier to read at very large and especially at very small sizes and are very good for captions.)

9. Define the terms – leading, letterspacing, kerning, tracking, and personality.
(Ans. Leading is the terms used to refer to the vertical spacing between lines of type. It is measured in points from the baseline of one line to the baseline of the next line. Letterspacing refers to the amount of space between individual characters. Kerning is the process of subtracting minute increments of space from between certain character pairs in order to improve their fit and therefore make them more eye-appealing. Tracking is a character-spacing option that permits the user to specify a small increment of space that is to be uniformly removed from between all characters. The personality of a typeface refers to a look that makes it more or less suited for a particular type of job. Confident, elegant, casual, bold, novel, romantic, friendly, stylish, nostalgic, classic, delicate, modern, crisp etc.)

10. Explain rasterization and anti-aliasing.



11. Describe how sound is classified into voice, music, and sound effects.
12. Define amplitude and frequency. How they affect sound quality?
13. What frequency level is required to be maintained for effective sound recording?
14. What do you mean by digitizing sound? Explain the impact of frequency rate, amplitude, and number of sound channels on sound recording.
15. Develop a formula for calculating the size of an audio file.
16. What functions does the digital audio system of a multimedia computer do?
17. What do the following terms, relating to digital audio editing refer to?                 (i) Trimming (ii) Splicing and assembly (iii) Resampling or downsampling       (iv) Equalization (v) Digital signal processing.
18. Write the main features of MIDI and WAVE audio file formats.



19. Define and the distinctive features of bitmap and vector images.
20. How would you determine the size of a bitmap image?
21. Mention the advantage and disadvantage of vector images.
22. What are the two factors on which the use of color in multimedia depends? Name the models for computer colors and printed colors.
23. Name the various display modes of PC systems along with the corresponding resolutions.
24. Explain the terms – Hue, Saturation, Brightness and lightness.
25. Why do we need to compress bitmap image files? Write short notes on the GIF, TIFF and JPEG file formats.



26. Write down the feature of analog and digital video.
27. What is the main advantage of digital video?
28. Write about two significant advantages in using computer-based digital video.
29. Explain the following terms, relating to digital video. (i) Frame rate, (ii) Frame size, and (iii) Color depth or Resolution.
30. Develop a formula for calculating the size of a digital video file size.
31. What is computer animation? Describe how animation is created.
32. What do you mean by video compression?
33. Define streaming video and streaming media.
34. What is video conference?
35. What is rich media?



36. What does Desaturate do to an image?
(Ans. The Desaturate command converts a color image to a grayscale image in the same solor model. However, the lightness value of each pixel does not change.)

37. Mention the purpose of Adjustment Layer.
(Ans. Adjustment Layers are layers that contain color information. It lets us experiment with color and tonal adjustments of an image without permanently modifying the pixels in the image. The color and tonal changes reside within the Adjustment Layer, which act as a veil through which the underlying image layers appear. An Adjustment Layer affects all the layers below it. Thus correction to multiple layers can be done by making a single adjustment rather than making the adjustment to each layer separately.)

38. Define the term Layer.
(Ans. Layers can be defined as sheets of pixels that can be edited independently, without affecting the other parts of the image. Layers are useful in adding a high degree of flexibility to Photoshop documents.)