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Making Waves: print out sound waves with the Raspberry Pi @Raspberry_Pi #PiDay #RaspberryPi

Nice write-up on a pi powered sound wave project from Eunice Lee, Matthew Zhang, and Bomani McClendon up on RaspberryPi.org.

The trio designed four colour-coded cards that represent four questions, each of which has a matching button on the breadboard. Press the button that belongs to the question to be answered, and Python code directs the Pi to record audio via the microphone. Releasing the button stops the audio recording. “Once the recording has been saved, the script viz.py is launched,” explains Lee. “This script takes the audio file and, using Python matplotlib magic, turns it into a nice little waveform image.”

Read more.


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