PoZeTool is a filter design and visualization tool. It allows you to place poles and zeros in the Z-plane and instantly observe how they affect a filter’s behavior. It can be used as an audio plugin or in standalone mode.

A UNIX-centric introduction to audio programming and DSP from scratch, with practical examples using low-level C and the JACK Audio Connection Kit.

Open-source C++ audio-core library with BS.1770 / EBU Tech 3341 tests, RT-safety primitives, and a source-built JUCE reference plugin.

Header-Only C++ Library for Audio Oversampling and Resampling