NetBSD includes various simple, command-line audio tools by default, such as audioplay(1), audiorecord(1), mixerctl(1), aiomixer(1), audiocfg(1)...

These tools are useful because they provide almost everything a user needs to test basic functionality of their audio hardware. They are critically important for basic diagnostics.

It would be nice to have a tool to easily visualize audio input using a simple Curses interface. Some ideas for its possible functionality:

You need NetBSD installed on physical hardware (older laptops work well and are cheaply available) and a microphone for this project. Applicants should be familiar with the C programming language.