Images and Sound

The greater number of bits, the more accurate the sound file or the greater number of colours are in an image?

(multiple answers)

• True

• False

• The file size is also bigger

• The file size is also smaller

An image in 3-bit has how many colours

• 2 colurs

• 4 colours

• 8 colours

• 3 colours

A sound recording with a higher sample rate will

• have a lower sound quality

• have a higher sound quality

• be a smaller file

• be a larger file

'Sample Rate' means the

• level of amplitude of the recording

• the number of measurements per second of the sound

• a part of someone else's music

• the bit-rate of the file

8-bit images ....

• have a greater number of colours than 6-bit images

• smaller files than 6-bit images

• are less detailed than 3-bit images

to calculate the file size of an image it is:

• (Pixels x Bits x Height) / 8

• (Height x Width x Bits) / 8

• (8 x Height x Width)

  / 8

• (Bits x W x Metadata) / 8

To calculate the file size of a sound recording....

• (Height x Sample Rate x Bit-Depth) /8

• (Length x Bit-Rate x Sample Rate)

  / 8

• (Length x Sample Rate x Bit-depth) / 8

• (Metadata x Length x Bit-Rate) x8

24-bit binary is

• a file size

• harder to use than hexadecimal colour codes

• converted to hexadecimal codes used for colour

• used to represent 16.7 million colours