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Year 9

Lesson 4 Good vibrations

Curriculum > KS3 > Unit > Lesson

Tracing the steps of a hiker through the altitude data that she transmits, learners will familiarise themselves with the basic concepts necessary for understanding any analogue to digital conversion: samples, sampling rate, and sample size. The main goal is for learners to understand the ‘big picture’ of how sound is captured, digitised, manipulated, and reproduced in digital devices.

Learning objectives

  • Recall that sound is a wave
  • Explain the function of microphones and speakers as components that capture and generate sound
  • Define key terms such as ‘sample’, ‘sampling frequency/rate’, ‘sample size’
  • Describe how sounds are represented as sequences of bits

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