[Scott Dorsey]

John Williamson wrote:

Their main claims seem to be "louder than normal vinyl" and/or longer
playing time with more uniform sound quality over the run.

"Louder than normal vinyl" is mostly a non-issue. I can already cut discs
louder than anyone can play back.

The problem is that the system is rate-limited; the stylus can only move
back and forth so fast. So the amount of excursion you can get on a low
note is MUCH wider than the amount you can get on a high note. Sure, you
can cut at half speed in order to get wider excursions at higher frequencies,
but you get discs that nobody can play back because their playback stylus
can't follow the groove accurately.

Also, looking at the stylus and groove profiles they favour, the stylus
will not be able to get past the dirt in the groove without reproducing
it along with the required signal. It'll be the same problem as the
laser pickups have.

I don't see this being particularly worse than normal playback.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."