Sound, Radio & InformationDigital Audio

44,100 Snapshots a Second

Digital audio is a string of measurements, not a wave

The song in your earbuds is stored as nothing but a long list of numbers. So how do numbers sing?

You'll find out

  • What a sound looks like to a phone
  • How many snapshots are enough
  • Why 44,100 and not 40,000

Why it matters

Every song, call and video you play runs on this trick, and it explains why some phone calls sound so thin.

About 3 min6 interactive slides · 5 questionsLesson 208 · Zone 24

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