Snippets currently has good support for browsing and navigating video content, and we’ve been working to provide similar capability for audio. From this we learned that a waveform display would ...

Lucía Garbo has created an Arduino powered noise pollution monitor, powered by an Arduino Mega micro-controller and housed in a 3D printed case. Other components include a SparkFun Sound Detector ...

Though [David] could have easily used USB OTG for this project, many microcontrollers don’t have the USB-to-TTL capabilities of his Arduino ... audio apps, to create the required waveform.

If you’ve got an Arduino, a few passive components ... his code turns a handful of cheap parts into an attractive and functional audio display. The project’s Hackaday.IO page explains that ...