Students need to understand:

  • how sound can be sampled and stored in digital form
  • how sampling intervals and other factors affect the size of a sound file and the quality of its playback:
    • sample size
    • bit rate
    • sampling frequency

Choose from the following to help you learn:


CAMBRIDGE Computer Science: 
Pages 148-151. Section "Representations of sound" (not including "Compression")
ROBSON & HEATHCOTE Computer Science (9-1):
Page 146 & 147. Section "8.5 Sound".
SUSAN ROBSON GCSE Computing(3rd edition): 
Page 57. Section "Sound"
SUSAN ROBSON GCSE Computing(2012): 
Page 17. Section "Sound"
AXSIED GCSE Computer Science (3rd edition):
Page 145, R73 "Digitising Sound"
ROUSE & O'BYRNE GCSE(9-1) Computer Science:
Pages 162-164. Section "Sound" (not including "Compression")

Web Sites
  • MrDMcKnight: Watch all (8:48). Digitising sound
  • Computer Science Tutor: Watch all (9:14). Sound
  • Cambridge GCSE Computing: Watch all (2:46) Sound, Part A
  • Cambridge GCSE Computing: Watch all (2:07) Sound, Part B
  • Cambridge GCSE Computing: Watch all (2:42) Sound, Part C
  • Computerphile: Watch from (0:00) to (6:14). Sampling 0:00 to 4:43. Bit Depth 4:43, 
  • MrAudio: Watch all (1:29)  

Last modified: Wednesday, 23 September 2020, 10:12 AM