Larry Jones
I can confirm that sometimes there is a horrendous noise when playing vocal synced tracks in preview mode. On my system it sounds like I knocked over an old guitar amp with a spring reverb, except it's louder than all other tracks combined. The sound subsides in several seconds just like a spring reverb, too. First time it happened I almost fell off my chair. It is so intermitent I don't know if I can duplicate at will. It's happened a few times, and rather than troubleshoot (since I'm always in a hurry) I just work around it - either try Melodyne, V-Vocal, do it manually or just decide it doesn't need alignment. I'll take a closer look next time and post findings back here if this issue doesn't get resolved.
This is exactly what happened to me (I reported it in another thread). It sounds like, as you said, like when you drop an old guitar amp with a analog reverb spring. The meters get slammed and the noise is damagingly loud.
Actually it was similar to a shotgun blast in gymnasium. Fudged up my ears for the day the first time it happened.
However that extended noise is from any reverbs downstrem from the clips. I had a mild reverb set up via a send to an FX bus. Once I turned off the verb the extended sound went away.
All that remained was extremely loud but extremely momentarily "pops". Those pops were the same volume as the sound with the reverb on. So I'm guessing the pops are so loud they hit the reverb and it gets repeated. As I said my verb was very light to the point you could barely hear it (it was just to give a small bit of room effect). The fact that the reflections/tails were that extremely tells me those pops are probably the loudest thing every blasted through my system (and I used to get that Dim Pro crash noise from browsing/previewing too many patches which was also insanely ear shattering).
So word to the wise... when using Vocalsync TURN OFF ANY REVERBS BEING FED BY THE VS TRACK(S) if you want to avoid hearing/equipment damage!!!
After all that I found Vocalsync to not be very useful anyway. It KIND of worked for some phrases but inevitably at least one or two syllables wouldn't sync or synced the wrong way (opposite direction... and these tracks were really close already).
I ended up having to just do the corrections using Audiosnap by hand which worked much better and actually easier than VS without the noise. Audiosnap seems to be working much better than my previous experiences so I'll be sticking with that.
VS is a nice idea but it's a little gimmicky and due to this noise issue and the fact it doesn't seem to work as well as advertised it's just not that useful to me.
Others may have a different experience and it's worth checking out but I was REALLY ticked off that I lost a day of working on something because my ears got smashed like that. It's bleeding dangerous and there should probably be a warning put on it. The noise was that bad.
Cheers.