SHSubjectHub

Sound, MIDI & Compression

AQA 75174.5.6A-levelLesson packSubscription
Also online

This worksheet marks itself

Set it as homework or classwork and every answer is marked as pupils go, with feedback on what they got wrong. The scores go straight into your mark book, so you can see who needs help before the next lesson.

  • 13 questions
  • 36 marks
  • about 45 minutes
  • marked instantly

Question types: short answer, multiple choice, calculation, multi-part.

Try it with a class, freeHow it works

About this resource

Describe the digital representation of sound (sample resolution, sampling rate, the Nyquist theorem), calculate sound sample sizes in bytes, describe the purpose of MIDI and its advantages, and explain lossless (RLE, dictionary-based) versus lossy compression.

25 slides.

Lesson outline

  1. Retrieval Starter — Bitmap File Sizes & Units
  2. Keyword Glossary
  3. Check: Bridging From Bitmaps to Sound
  4. Digital Representation of Sound
  5. Sampling Rate vs Sample Resolution
  6. Check: Rate or Resolution?
  7. The Nyquist Theorem
  8. Undersampling vs the Nyquist Rate
  9. Check: Minimum Sampling Rate
  10. I-Do: Calculating Sound Sample Size
  11. We-Do: Practice — Sound Sample Size
  12. MIDI — Musical Instrument Digital Interface
Unit bundlePaper 2
Part of: Paper 2: the whole unitEvery resource in the unit in one zip.

More from 4.5 Fundamentals of data representation