Do you think it would be possible to plug my guitar on my PC, play a note, and the computer would say "do, re, mi, fa, sol, la or si"... Like my program would like retrieve the frequencie of my note or something, and I would compare the frequencie to a pre-established "do". I do not want an exisiting program, I want to try this myself. If it is possible, where do I start?

Thx in advance