21. OCR GCSE (J277) 1.2 Representing sound
About this video
OCR J277 Specification Reference - Section 1.2
This video explains how sound can be represented and stored in binary. A number of key terms are defined including sample size, bit depth and sample frequency together with the impact they have on both the quality and the file size of a sound.
Don't forget, whenever the blue note icon appears in the corner of the screen, that is your cue to take notes about the content being shown on the current slide.
00:00 Representing sound
00:06 Intro
00:11 What is sound?
00:35 How sound is sampled and stored in digital form
00:53 Sound wave
01:28 Sample resolution and sampling rate
03:12 Calculating sound sample sizes
04:06 Recap
04:44 Outro
Last updated: 23.02.26
