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We’re refreshing the questions on our KS3 and GCSE Computer Science subject knowledge assessment. The current version remains available. Updated questions will be available from 18 May 2026.

GCSE

Lesson 12 Representing sound

Curriculum > KS4 > Unit > Lesson

First, learners will be reminded of how sound travels. This will then lead into an explanation of how sound can be interpreted digitally. Through examples and demonstrations, learners will find out about the key terms: sampling, sample rate, and sample resolution.

Learning objectives

  • Explain why analogue sound data needs to be converted into binary digits
  • Describe the concepts of sampling, sample rate, and sample resolution

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