How Do I Use The Sound Wave Visualizer?

This activity includes an augmented reality visualization of a sound wave. For this to work, your <iPhone’s|iPad’s> camera needs to be able to see the black and white ‘L’ and ‘R’ stickers on the inside of the ear pucks. If you’re having trouble getting it to work, here are some tips: 

  • Make sure camera permissions are enabled. Go to iOS Settings > Listen and switch camera access on.
  • Make sure you’ve got the ear pucks positioned correctly. Place them flat on a table, (not in the headphone yokes,) and make sure they are faceup, with the black and white ‘L’ and ‘R’ stickers visible.
  • Remove the ear cushions from the ear pucks. (The cushions can block the camera’s view of the stickers.)
  • Start by aiming the camera straight down at one ear puck, with the camera about 8 to 10 inches away. Try to center the ear puck in the white outline.
  • Once the app has “locked on” to the target, you should hear a tone and see a cloud of small blue or pink dots.
  • When the dots are visible, you can move the camera around for a better view, but try not to move it too far or too quickly.
  • Use the Frequency slider to make a higher- or lower-pitched sound.
  • Use the Volume slider to make it louder or quieter.

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