While not perfect, I really liked Will Pirkle’s book[1]. It describes the popular ABIs and has great intro to DSP. I would say the downsides are that the descri

While not perfect, I really liked Will Pirkle’s book[1]. It describes the popular ABIs and has great intro to DSP. I would say the downsides are that the description of various interfaces takes up too many pages and that the book uses his own framework ASPiK for cross-compatability, but it’s easy enough to convert to a more popular framework like JUCE if needed. [1] https://www.routledge.com/Designing-Audio-Effect-Plugins-in-C-For-AAX-AU-and-VST3-with-DSP-Theory/Pirkle/p/book/9781138591936 https://www.routledge.com/Designing-Audio-Effect-Plugins-in-...