There was a nice talk from VCF West last year on signal analysis and filtering (focusing more on the analog realm than this article) to recover data from damage

There was a nice talk from VCF West last year on signal analysis and filtering (focusing more on the analog realm than this article) to recover data from damaged floppies: https://www.youtube.com/watch?v=ZgH6ov33ieg https://www.youtube.com/watch?v=ZgH6ov33ieg