This is nuts, some guy wrote an awesome sound editor for the Commodore 64, Cubase64! Link comes via man like Tack
Really nicely, and visually, explained introduction to the Fast Fourier Transform - great stuff!
I’m currently working on a Brillo audio component, which will require very low latency performance. While searching for some tips and prior art, I came across this talk from Google I/O 2013. A bit older now, but provides an excellent overview of the problem domain and approaches to solving those issues..
Super nice demo of algorithmic sound generation with Perl and Portaudio…