Deck 8: Digital Media

Question 1

After you finish arranging video clips and adding a soundtrack, you can select a video file format and a compression technique. For example, you might store the video in WebM container format and use the MPEG
to compress the file.

Answer 1

Codec
A codec is software which is used for compressing video and also used for playing different video format files.
Codec is responsible for compressing the video while it is stored and it also decompresses the video when it is played.
Different video file formats (like AVI, MPEG) are also called as container formats. Proper software or devices are required to play these different video formats.
H.264, DivX, MPEG are some most popular codec which are used for playing and compressing different videos. These codec also uses unique methods for reducing the size of the video.
Many video containing websites (like YouTube) also allows user to upload any video. These websites contains flash, WebM, MPEG and MOV video format which can directly play on the web browser of the computer or cell phone. So video must be converted before uploading on the website.
Therefore, the appropriate word to fill in the blank is codec.

Question 2

When a telephone-based airline voice response system asks you to say your flight number, it processes your response using speech
software.

Answer 2

Speech recognition software
Speech recognition is the p rocess of converting the spoken words into the text. It is the ability of the machine to understand the spoken words.
Speech recognition is also used in telephone based automate service and IVR (interactive voice response) systems for example Google mobile apps which helps in searching the google by voice.
When a user speaks to a microphone which is connected to sound card then the speech recognition system will collects the words spoken into the microphones
The sound card converts the voice which is in the form of analog sound to the digital form. The data is processed by the speech recognition system.
Speech recognition is used for controlling windows components without the use of mouse. In windows 7, Narrator is the program which is used as a speech recognition system,
Therefore, the appropriate word to fill in the blank is recognition.

Question 3

shifting is the process of converting media files from a format suitable for one device to a format suitable for a different kind of device.

Answer 3

Format Shifting
It is a process of converting the format of media files to another file so that it can also be used on another device.
Format shifting is done because sometime there may be a situation when the user wants to run a media file on another device.
Extracting music files from the CD's and converting them to mp3 or wav or any supporting format is an example of format shifting.
Therefore, the appropriate word to fill in the blank is format.

Question 4

Describe differences in the ways that vector and bitmap graphics are created, stored, and used. Explain how the concept of layering relates to your ability to modify a vector graphic.

Question 5

A digital camera captures images on the photosites of a(n)
. (Hint: Use the acronym.)

Question 6

A digital
can be inserted into a music or video file to specify the number of times a content stream can be duplicated.

Question 7

Suppose you are creating an English-as-a-Second- Language Web page and you want to add links to sound files that pronounce English phrases. Would it be better to store the files in WAV or MIDI format

Question 8

After purchasing a CD of your favorite rock group, you try to rip one of the tracks to your computer and convert it to MP3 format. When you play the file on your computer, you notice loud pops in the audio that indicate that the CD was probably copy
.

Question 9

A characteristic of bitmap graphics is that they are resolution
, so that reducing the resolution also reduces the image quality.

Question 10

HDCP is a(n)
-based DRM technology.

Question 11

Draw a diagram to show how the smooth curve of an analog sound wave is divided into samples and stored digitally.

Question 12

Describe the procedures used to convert bitmap graphics into vector graphics, and to convert vector graphics into bitmaps.

Question 13

Graphics stored in True Color format require
bits for each pixel.

Question 14

is the primary technology used to protect DVDs, but it was cracked soon after it was introduced. (Hint: Use the acronym.)

Question 15

Imagine that you're a musician and you are asked to synthesize some upbeat music for a modern ballet. For this project, you would most likely work with
music.

Question 16

You've downloaded a movie from a new online store. You can watch it on your computer; but when you try to watch it on a large-screen television, you don't get a picture. You know the television is working, so you guess that the movie is protected by
that requires all devices to be compliant.

Question 17

The most popular True Color formats for Web graphics include
and JPEG. (Hint: Use the acronym.)

Question 18

Streaming movies are temporarily held in a(n)
that opens a potential hole for illegal copying.

Question 19

Explain the relationship between sampling rate, audio quality, and file size.

Question 20

Make a series of quick sketches that illustrates the evolution of a 3-D graphic from wireframe to rendered image, and to raytraced image.

Question 21

Unlike
compression,
compression shrinks a file without throwing away any data.

Question 22

Suppose you visit a Web site that allows you to enter sentences, and then it reads the sentences back to you. The site even gives you a choice of a female or male voice. You assume that this site uses speech
technology.

Question 23

Explain how compression affects the file size of a digital video.

Question 24

Vector graphics require more storage space than bitmaps, but vectors can be enlarged without becoming pixelated. True or false

Question 25

Make a list of ten digital audio applications and indicate whether each one would use WAV or MIDI.

Question 26

Explain how streaming audio and video work, and contrast them with non-streaming technology.

Question 27

A process called
converts vector graphics into bitmap images.

Question 28

You have an old photograph that you want to incorporate in a brochure for your antiques business. To convert the photo into digital format, you use a(n)
.

Question 29

Use your own words to make a list of the steps required to burn video onto a DVD that can be viewed on standalone DVD players.

Question 30

Question 31

Use the file manager on your computer to locate five bitmap graphics. List the file name and extension for each one, and where possible identify whether it originated from a digital camera, a scanner, or some other source.

Question 32

Make a list of the file extensions that were mentioned in this chapter and group them according to digital media type: bitmap graphic, vector graphic, digital video, digital audio, and MIDI. Circle any formats that are used on the Web and put a star by formats that typically require you to download a player.

Question 33

A 3-D image is based on an assemblage of vectors called a(n)
.

Question 34

Imagine that you are preparing a series of bitmap graphics for a Web site. To decrease the download time for each graphic, you can use a compressed format such as GIF, PNG, TIFF or
.

Question 35

Explain how specific DRM technologies are used to prevent consumers from a) making a copy of a music CD, b) ripping tracks from a music CD, c) copying a DVD movie, and d) watching a streaming movie.

Question 36

The technique of adding light and shadows to a 3-D image is called ray
.

Question 37

Describe six ways to transfer photos from a digital camera to a computer.

Question 38

Give examples of time shifting, place shifting, and format shifting.

Question 39

The process of converting analog video signals into digital format is referred to as video
.

Question 40

You've taken a photo with a high-resolution digital camera and you want to send it as an e-mail attachment. You decide to
it to reduce the image to a more manageable size.

Question 41

rate refers to the number of times per second that a sound is measured during the recording process.

Question 42

A(n)
is the software that compresses a video stream when a video is stored, and decompresses the file when the video is played.

Question 43

Explain how resolution, image size, color depth, and color palettes can be manipulated to adjust the file size of a bitmap graphic. Summarize how you would prepare bitmap graphics for the following uses: e-mail attachment, Web page, desktop publishing, and printed photo.

Question 44

When sound card circuitry is incorporated into a computer system board, it is often referred to as
audio.

Question 45

Compressed files contain less data per frame and play back more smoothly at lower
rates.

Question 46

Suppose you are designing a logo for a client. You know the design will undergo several revisions, and you understand that the logo will be used at various sizes. You decide it would be best to use drawing software to create the logo as a(n)
graphic.

Question 47

The process of ripping tracks from an audio CD to a digital format such as MP3 is called digital audio
.

Question 48

Digital videos can be converted from one file format to another through a process called
.

Question 49

Recap key points about image compression, explaining the difference between lossy and lossless compression and listing file types with built-in compression.

Question 50

MIDI sound is generated from a(n)
(or patch set), which is a set of prerecorded musical instrument sounds.

Question 51

Before you create a DVD video, it is a good idea to create a DVD
on your computer's hard disk.