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Oak ComputingTest · Computing

Representing sound with binary data

The starter and exit quiz of the lesson “Representing sound with binary data”, from the unit “Data representation: images and sound” (Year 9 Computing) by Oak National Academy.

Free to use. Edit it, share it and hand it out to your students.

Oak National Academy

12 questions

  1. When you change the resolution of an image in image editing software, what are you actually changing?
  2. When you change the physical dimensions of an image in an image editor by increasing its height and width, what happens to the image?
  3. What is the purpose of zooming in on an image in an image editor?
  4. What does it mean to 'export' an image in an image editor?
  5. What is a common use of artificial intelligence (AI) in image editing?
  6. Which of the following is a potential concern about AI to create art?
  7. What is the purpose of a microphone in digital audio?
  8. What does 'sample rate' refer to in digital audio?
  9. What does changing the sample resolution (bit depth) change in a digital audio file?
  10. What is a channel in digital audio?
  11. If you increase the sample rate of a digital audio recording, what is the effect on the sound quality and file size?
  12. Why might a musician choose to record their music in stereo instead of mono?

License: OGL

Representing sound with binary data · Examplary