30. Pearson Edexcel GCSE (1CP2) Topic 2B Representing sound

About this video

EDEXCEL 1CP2 Specification Reference - Topic 2B: 2.2.1 - 2.3.2

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?
00:36 How sound is sampled and stored in digital form
00:54 Sound wave
01:29 Sample resolution and sampling rate - Sample rate
02:16 Sample resolution and sampling rate - Bit depth
03:13 Calculating sound sample sizes
04:07 Recap
05:16 Outro

Last updated: 16.07.25

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