Pictures and Sound in Computers

How is a pixel represented in a digital image?

• How is a pixel represented in a digital image?

• As a number in the image grid with color values defining its length and width.

• As a vector in the image grid with color values defining its brightness and contrast.

• As a symbol in the image grid with color values defining its opacity and transparency.

• As a point in the image grid with color values defining its hue and saturation.

What is the difference between analog sound and digital sound?

• The digital sound is more accurate than the analog sound

• Analog sound is faster than digital sound

• Analog sound is transmitted through cables and digital sound through radio waves

• The difference between analog sound and digital sound lies in the signal representation: analog sound is continuous and digital sound is discrete.

What is a common audio file format?

• JPEG

• MP3

• WAV

• PDF

What does resolution mean in an image?

• The resolution in an image refers to the number of pixels that make up the image.

• The resolution in an image refers to the saturation of colors in the image.

• The resolution in an image refers to the depth of field of the image.

• The resolution in an image refers to the physical size of the image.

What is the sampling rate in sound?

• The sampling rate in sound is the amount of audio samples taken per second.

• The sampling rate in sound is the amount of frames per second.

• The sampling rate in sound is the amount of bytes per second.

• The sampling rate in sound is the amount of colors per second.

What is color depth in an image?

• The color depth refers to the physical size of the image

• The color depth indicates the number of pixels in an image

• The color depth in an image refers to the number of bits used to represent the color of each pixel.

• The color depth is the resolution of an image

What method is used to represent images on a computer?

• Font type

• Printing method

• Audio format

• Image file format

What is the basic unit of a digital image?

• byte

• resolution

• pixel

• megabyte

What determines the sound quality in a digital audio file?

• Device brand and operating system used

• Sampling rate and bit depth

• File color and screen size

• Processing speed and amount of RAM

How is the quality of a digital image measured?

• By the date the image was taken

• By the brand of the camera used

• By the file size

• By the resolution, color depth, and compression used.