On Glitch Patterns in DAT Transfers

Among audio preservationists, Digital Audio Tape (DAT) is a notoriously glitchy format, routinely plagued by intrusive digital dropouts.  But its glitches are patterned in ways that reflect the technical details of its structure—the interplay between the organization of the digital data and the physical design of the tapes and machines.  I believe these patterns could…

The Wow Factor in Audio Restoration

Some kinds of audio restoration are on pretty firm ground these days: declicking and decrackling, for instance, or noise reduction.  But speed variance correction—the removal of wow and flutter—remains an extraordinarily daunting challenge.  It has a reputation for being the high-hanging fruit on the audio restoration tree, akin to rocket science or brain surgery.  The…