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Kurt Nauck wrote: > > Have you seen this? > > http://www.eif.ch/visualaudio/ > > Perhaps now the tinfoil playback problem has been solved! ...or perhaps not. All the examples shown involved lateral modulation, which can easily be scanned-in. The tinfoil recordings AFAIK used vertical modulation, and it isn't clear how well such modulation can be discerned by conventional scanning. What's really needed is a method of (in essence) removing one of the groove walls so that all the details of the modulation can be observed from the vantage point of this removed wall. I think that a more sophisticated method than the one demonstrated will be necessary. On the positive side of things, if the playback quality of disc scanning can be improved, then perhaps there's a chance for flaking lacquer recordings to be recovered from oblivion. Aaron Z