Module 01: Digital Content

Which of the following extensions identifies an audio file with very good sound quality based on MPEG-4 that has lossy compression and is used for streaming Apple Music?

.aac

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

24

To digitally record sound, you must use a tool that samples the sound waves many times per second, converts them into binary 1s and 0s, and stores them in a file called a

ADC

Most computer data is encoded as UTF-8 or Extended _ code to represent character data.

ASCII

A digital camera captures images on the photosites of a

CCD charge coupled device

To compress a video stream when a video is stored and then decompress the file when the video is played, you need software called a

Codec

Formatting codes can be added to documents using a _, such as slashes // and angle brackets < >.

Delimiter

MIDI files are less compact than digital audio files.

False

The binary number system has only two digits: 1 and 2

False

Vector graphics software converts the items you draw into pixels that are stored and can be later used to re-create your drawing.

False

The data files containing photos, videos, and music are typically compressed using _ compression that throws away some of the original data.

Lossy

One popular standard method for storing music data for synthesizers and computers is specified by

MIDI

_ files store a series of instructions that specify which notes to play, their duration, and their volume.

MIDI

The most popular True Color formats for Web graphics include _ and JPEG.

PNG

An undesirable jagged appearance of an enlarged bitmap image is referred to as

Pixilation

Today's color display devices represent color using the ______ color model.

RGB

A process called _ converts vector graphics into bitmap images.

Rasterization

A vector graphic can be converted into a bitmap graphic through a process called

Rasterization

The process of covering a wireframe with surface color and texture is called

Rendering

Based on XML, _ is a popular format for vector graphics on the Web.

SVG

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

Sampling

People can control software with spoken commands, as well as dictate text into a word processing document, using which technology?

Speech recognition

Digital photographs are stored as bitmap files.

True

Digital video uses bits to store color and brightness data for each video frame.

True

In digital video, a lower resolution reduces the bit rate.

True

Instead of storing the color value for each pixel, a vector graphics file contains instructions that a computer uses to create the shape, size, position, and color for each object in an image.

True

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

True

When you change the size of a graphic and observe that the objects within it change proportionally and maintain their smooth edges, this indicates that you are working with a _ graphic.

Vector

A graphic composed of two images, one that is tinted red and another that is tinted blue, that when viewed together produce a stereoscopic effect is called an

anaglyph

A _ is a 0 or 1 used in the digital representation of data.

bit

The number of digital video bits that are processed during a specific unit of time, usually during one second, is called the

bit rate

The number of video bits that are processed during a specific unit of time, usually during one second, is called the _____.

bit rate

Transmission speeds are expressed in _______, whereas storage space is expressed in _______.

bits, bytes

A group of eight bits is called a

byte

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

capture

Developers use a technique that recodes the data in an image file so that it contains fewer bits without losing quality, called lossless image _.

compression

The audio components for virtual assistants such as Siri are obtained by recording real voices and then applying _ speech synthesis.

concatenative

MP4 is an example of a video _ format.

container

Video files are stored in formats that hold the compressed video stream and an audio stream, known as _ formats.

container

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

dependent

The number of colors available in a graphic is referred to as color _________.

depth

Whereas an infinite scale of values is used to represent analog data, only discrete digits such as 0s and 1s are used to represent _ data.

digital

The process of converting information, such as text, numbers, photos, or music, into digital data that can be manipulated by electronic devices is called ___________.

digitization

What is NOT a format that is used for digital audio?

doc

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

extraction

Both scanners and digital cameras produce vector graphics.

false

Lossy compression provides a way to compress data and reconstitute it into its original state.

false

TIFF, PNG, and GIF graphics formats offer lossy compression.

false

The brightness values for various ranges of dark, mid-range, or light pixels can be adjusted in an image editor using an image

histogram

Compression that can be applied to each frame of a video using the same technique as for compressing a still image is called _ compression.

intraframe

Audio formats such as MP3, Ogg Vorbis, and AAC have good sound quality even though they use _ compression.

lossy

Which type of data consists of numbers that can be used in arithmetic operations?

numeric

The "p" in 1080p stands for _ scan.

progressive

What technique adds light and shadows to a 3D image?

ray tracing

he number of times per second that an audio recording device measures the sound being recorded is called the

sampling rate

How many bits does ASCII require for each character?

seven

The process by which machines produce sound that resembles spoken words is called

speech synthesis

Two images from a stereo pair displayed side by side are called a

stereogram

In the computer world, TB is the abbreviation for

terabyte

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

tracing

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

transcoding

Bitmap graphics are resolution dependent because each element is a discrete pixel.

true

3D graphics are based on vectors stored as a set of instructions describing the coordinates for lines and shapes in a three-dimensional space. What do these vectors form?

wireframe

A 3D image is based on an assemblage of vectors called a _.

wireframe