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