Im looking to make a microcontroller that has one stereo 1/8inch input and one stereo 1/8inch output and a processor that can effect / filter the audio. Im looking around for microcontroller tutorials and can't find anything that would tell me, really, the first step on how to find which components I need. I would really like to by a breadboard and find the components myself and do it all without a dev board microcontroller like a arduino or raspberry pi just so I can see and understand how all the individual components work together from the ground up.
Maybe the processor may be a little more than I know how to do right now, but would anyone be willing to step me through the process of building something like this or a online / book reference for tutorials that will show you how to do this? Or maybe just tell me where I can get the parts and resources to put it together so I have some starting place.
I appreciate any information, I would post stuff I've found but all I can find are literal schematics rather than a step by step type tutorial.
Any good audio microcontroller tutorials for beginners or any advice on how to start gathering information on this in general?
Thanks again in advance!