A group of students, (David Öhlin, Patrik Olsson, Robert Olofsson, Reine Vaerlien and Cécile Ayrault), at the Royal Institute of Technology (KTH), in Stockholm have created an amazing piece of software: Using an ordinary digital scanner hooked up to a PC, they are able to convert good old vinyl records to music files. So the record never spins… they just analyze the image of it and convert it to music. Simply Amazing.
Here is a short description for the tech savvy: First, as the record does not fit into a normal scanner they need to scan it in four pieces. The four pieces are in very high res (2400 dpi), analyzed, and pieced together into a single image. Then the tracks are “straightened out” by the software. Then, in a final step of analysis the straight tracks are analyzed and then converted to music.
The article below claims that the software was written in C language but my guess is that the guys used C++. Then for the heavy math processing they used the MatLab package.
The software has already, in a side project, been used to recover the soundtrack from some films from 1906. Playing the films in normal equipment would, apparently, have damaged the fragile film stock.
The software is still a school project, and (I would guess) not quite finished. The students plan to release it as shareware. I hope that becomes a reality before the commercial forces descend upon these bright youngsters.
I am sorry I have not found any English texts on this, so here is the Swedish text for the benefit of my millions of Swedish fans.