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…

Time-Based Image Averaging

Imagine watching a time-lapse video covering more than a century that shows the evolution of a landscape, a magazine cover, trends in fashion, or automobile design.  Or picture the same thing being done with the face of a politician or celebrity from youth to old age, or with artistic trends in painting spanning a millennium…

Improvements in Face Averaging

The historical face-averaging experiments I’ve been blogging about here for the past couple years have depended on efficient, decent-quality methods of averaging faces in the first place.  I’ve recently figured out some ways to improve my results and streamline the process of getting them, and in this post I’d like to describe my latest revised…