JohnV has been kind enough to host for me several problem samples from the Smashing Pumpkins album, Mellon Collie and the Infinite Sadness.
Yes, I am aware on this artifact (posted long time ago) - right now I am preocupied with something on higher priority, but I will try eliminating it until official next release.Artifact could appear on tracks with "pan-potted" human voice and very similar masking thresholds on L and R channels - it might be toggling of M/S and L/R too often for a particular sfb, or very relaxed M/S switching criteria.
I'm very interested in your "higher priority" work, although from what I've heard discussed publicly, it's top-secret or something. So don't let me distract you from that.
Ok, rules for highest quality encoding:1. Go to "preferences / plug-in look up / defConvertor" and set resampling to SINC , quality 100 for other purposes (combo box that allows selection between "playback" and "other purposes" - this will enable highest quality resampling available in NERO2. Switch to "high" encoding quality for MPEG-4 AAC plug-in Default is "medium" which is also good quality, and 30-40% faster - but with small degradations
At least I found the reason for the problem - when L and R channels are almost the same, side channel is getting less bits than necessary, and in some frequency areas it just erases the entire signal - after reconstruction signal could have "thrill" in stereo image over short period of time.This usually does not happen too often, but in some cases it could.