In a message dated 3/30/2008 6:19:38 P.M. Eastern Daylight Time, TAEdisonJR at aol.com writes: The scans were made by Jerry Fabris and David Giovannoni at the Edison Site late last October. The sound was recovered by Earl Cornell and Carl Haber at the Lawrence Berkeley National Lab at UC Berkeley, just like the Scott recordings. We started out with the Edison phonautograms because they were the most immediately accessible, and they quickly allowed Earl and Carl to determine how viable this project would be as well as how to go about reprogramming their existing equipment to work effectively with phonautograms. ============ Thanks for this very helpful and thorough reply! Since a small number of original Phonautographs still exist (here and there), why hasn't anyone made a "modern" phonautogram" and then applied the same computerized technology to recover what was recorded? At least in the modern era, we then have a way to compare the results. If what is extracted from the lampblacked tracings now compares favorably with the actual reality, then we would know that we are, ahem, on the right track... we could even get someone to sing "Au Clair de la Lune" and see what emerges... Allen **************Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15&ncid=aolhom00030000000001)