2 data

Question 1

how to work out filesize (with units)

Answer 1

sampling frequency (kHz) * bit depth (bits) * length (s)

Question 2

Explain the effect of increasing the bit depth on the quality of the sound file

Answer 2

• the audio on the quality of the sound file increases
• more amplitude values available to record.

Question 3

Define resolution

Answer 3

the concentration of pixels in an image

Question 4

give two reasons for compression

Answer 4

• reduces the size of a file
• smaller files are transferred quicker on the internet