Year 9
Lesson 4 Good vibrations
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
Package contents
- Lesson plans
- Learning graphs
- Unit overviews
- Activities
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