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Listen to your PocketLab graphs with audio feedback

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Submitted by PocketLab on Mon, 10/08/2018 - 14:58

Listen (literally) to your PocketLab graphs with audio feedback

There are two ways to hear the data collected by PocketLab graphs with audio feedback. 

Simple: Click the "Audio Feedback" button in the upper right corner of the PocketLab Web App. 

Click the "Toggle Audio" icon in the upper left corner to listen to PocketLab graphs with audio feedback.

The PocketLab Web App will now play notes based on the displayed graph. When the data on the graph increases, the notes get higher. When the data on the graph decreases, the notes get lower. Using the rangefinder, light sensor, or magnetometer with a pair of magnets is especially fun with the Audio Feedback turned on. 

Advanced: Use the PocketLab ScratchX integration to build a PocketLab Theremin Synthesizer. 



PocketLab superuser, Dr. Richard Born, posted two lesson activities that use the PocketLab ScratchX integration to build a PocketLab powered theremin synthesizer. The first is a simpler integration with Scratch. Check it out here.



The second gives you more control over the synthesizer but requires some more involved steps. You’ll need to be fairly comfortable using PocketLab with ScratchX, but the complete directions are all there. Check it out here. 

Making music with motion



At PocketLab HQ we tried some classic rangefinder experiments while listening to the PocketLab graphs with audio feedback. It’s simple to try. Get audio feedback from rangefinder data using either of the two methods above and start some motion experiments. Here are two we tried:

  1. Linear motion: Match the graph
  2. Properties of a wave with simple harmonic motion

We also experimented with a new PocketLab activity that we’re working on. Tape your PocketLab Voyager to the bottom of a cup with the rangefinder pointing straight down. Drop it from about a meter to measure the position and velocity of your cup in free fall. See how high you can drop it before your cup reaches terminal velocity. More on this activity coming soon. 

Try some audio feedback experiments and share using #PocketLabIt on Twitter or Instagram. 

Harmonic motion graphs with audio feedback