I have now confirmed this in both V7 and V8 on both Mac and PC. This occurs in the IDR plugin, L1+, L2, L3, and probably any other Waves plugin that offers the IDR dither.
Switching through the dither types can cause random dithering results as seen on a bitscope. If anyone wants to see this, bring up L1+ and put it on 8-bit so that you can see this on any meter. Switch through the types and you'll find type 2 gives random results with noise-shaping on and you'll also see random results when switching to "None"(off).
I tried to report this to Waves and the support tech treated me like an idiot.
See a couple of screen shots:
http://dl.dropbox.com/u/2505899/IDR%20Fault.JPG
http://dl.dropbox.com/u/2505899/IDR%20Fault%202.JPG
Better yet, see it for yourself.
Here's my correspondence with Waves word for word with a little redaction. Start at the bottom.
Quote:
-------Answer from Waves at 2/8/2011 4:05:17 AM
Hi James;
I am defiantly up to date regarding what is included in the AudioTrack- let me repeat:
Both the IDR and the DLA are only components which are being installed with ANY Waves Plug-In.
However, they are not Plug-Ins, and therefore I do not understand what the issue that you are having is.
The DLA is a component which improves the delay compensation of the host and cannot even be loaded.
The IDR is related to dithering, but again- it works only in the background.
BTW, I know how to open a link...
Have a great day
If you need further assistance feel free to contact us or visit www.Wavesupport.net
Best Regards,
XXXXXXXXXXXX
Waves Technical Support Staff
-------Question/Reply from XXXXXXXXXXXXXXXXXXXX at 2/7/2011 3:27:00 PM
XXXXXX,
Thanks for the reply. It seems that you may not be up to date on what came with Audiotrack. I also got the IDR plugin and DLA installed with it. DLA I cannot use since it is a TDM plugin.
The IDR plugin properly dithers at 20 and 16 bit depths as seen on a bitscope. But, it also sometimes adds noise when switched to "no IDR" The linked pic shows the noise on the bitscope. I checked the link and it is good. Since this form doesn''t support hyperlinking, copying and pasting the link in your browser URL will get you to the picture.
http://dl.dropbox.com/u/2505899/IDR%20Fault.JPG
As for Audiotrack, it seems to be working just fine. I bought it because it is one of very few plugins on the market that can actually do upward expansion. The compressor ratio can go below 1.
-------Answer from Waves at 2/6/2011 6:47:07 AM
Dear James,
All of the Waves products include the IDR component.
However, it is not an actual Plug-In and you can't really use it.
Originally, it was a dithering Plug-In.
BTW, the link you sent me to the screenshot didn't work.
Please let me know if something is wrong with the Audio Track Plug-In.
Have a good one,
If you need further assistance feel free to contact us or visit www.Wavesupport.net
Best Regards,
XXXXXXXXXXXX
Waves Technical Support Staff
-------Question/Reply from XXXXXXXXXXXXXXXXXXXX at 2/4/2011 2:26:51 PM
I purchased Audiotrack last night from audioMIDI.com. After installing version 8, I found that the IDR plugin was included. I opened IDR and a bit scope to see the dither being added. I found that when switching to "no IDR", there would sometimes be a noise in the 22nd-24th bit level. Sometimes it would be in one channel or the other. Sometimes it would be non-identical in both channels. Here's a link to a pic of the issue.
http://dl.dropbox.com/u/2505899/IDR%20Fault.JPG
BTW, if this is the second time you see this bug report from me, when i first submitted it, it appeared as though my account login had expired and there's was absolutely no indication that the form data had been successfully submitted.
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IDR
is a plugin and you
can use it.
_