AQA A’Level SLR13 Analogue and digital data signals
About this video
AQA Specification Reference
AS Level 3.5.6.2-3.5.6.3
A Level 4.5.6.1-4.5.6.3
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.
Key questions:
- What is the difference between analogue and digital data and signals?
- What is an analogue-to-digital converter (ADC) and a digital-to-analogue converter (DAC)?
00:00 Analogue and digital data signals
00:12 Intro
00:17 What is sound?
00:48 Analogue and digital sound
01:18 Analogue and digital signals and data
02:26 Analogue-to-digital converter (ADC)
02:57 Digital-to-analogue converter (DAC)
03:11 Key questions
03:25 Outro
Last updated: 09.05.25
