gustabo
It would be nice if you could right click the synth name in the synth rack and select upsample on render...

But remember, it's plug-ins too, not just VIs. If a synth needs resampling, once you enable that you're probably not going to want to turn it off.

gustabo
It would be nice if you could right click the synth name in the synth rack and select upsample on render...

Sure. This is version 1 of this feature - I have a feeling that you will see some interesting enhancements in upcoming rolling updates :) This is one of the huge advantages of the new distribution model - that we can offer users improvements as they are done rather than you having to wait a year or more.

slartabartfast
An interesting commentary that suggests local re-sampling (which seems to be the point of this new feature) is inherently inferior to doing the whole project end to end at a higher sample rate:
https://varietyofsound.wordpress.com/2012/11/02/working-itb-at-higher-sampling-rates/

 
If you start at 96 kHz, you don't have to resample unless you go down to 44.1, which you probably will anyway for a commercial CD release. So then the question becomes whether converting the sample rate up to 96 kHz causes more deterioration to the signal than the foldover distortion it removes. I don't think there's any doubt about that. The sample rate conversion algorithm that SONAR uses is very high quality.
 

Can someone explain how one can determine (without using the notoriously unreliable ear) that foldover distortion has occurred during processing?

 
For applying this feature, actually the ear is pretty good at this sort of thing . It's all quite subjective; for example removing foldover distortion may take out some of the perceived "fatness" in a drum part. One person who was evaluating upsampling said that sometimes it sounded too clean.
 

Noel Borthwick [Cakewalk]

gustabo
It would be nice if you could right click the synth name in the synth rack and select upsample on render...

Sure. This is version 1 of this feature - I have a feeling that you will see some interesting enhancements in upcoming rolling updates :) This is one of the huge advantages of the new distribution model - that we can offer users improvements as they are done rather than you having to wait a year or more.

Hey Noel, thanks for stopping by! Glad to hear you may enhance this in the future. 

drewfx1 
Some have stated that in the free Reaktor Player the upsampling options were grayed out, but I'm not 100% certain whether that's a configuration issue or a limitation of the free player as I have the full version.

I've heard that as well, but I too have the full version...

Tom Riggs
I can state that TruePianos benefits from the upsampling. I read that many of the guitar amp sims might benefit but which ones?  I have guitar rig 3 and 4 that came with Sonar versions.
 
 
What about the reverbs, chorus and phasers etc that come with Sonar? Lets make a list of the plugs that seem to be improved by this new feature.
 

Let's subject any claims to a blind test. Otherwise they are worth exactly diddle. From now until infinity posters will be waxing rhapsodically about how upsampling makes this reverb "shiny". That buffer delay "playful". This tube saturation "porky". That console emulator "pastoral". 

Do what you like I already did the testing to my satisfaction long ago. My only trouble was I did not get the upsampling setup correctly the first time I tested it in the current build. 
 
 
I'm using the Atlantis module available to download from TP directly. I have the full version so I'm not sure if it is available to the sonar only users.
 
My claim may be worth dittle to you however to me it is golden. Have a nice day.
 
 
Oh and by the way I tested Lounge lizard 3 as well but I can not tell any difference at all. So for whatever that is worth to you are anyone else.
 
I also noticed that the bridged plugins do not support the upsample option. I was going to test my copy of B4 II to see if there was any benefit when I discovered the bridging limitation.
 
 

SONAR bundles amber. TruePianos does give a pretty generous discount to the full product for Producer/Platinum users.

Notecrusher
 
Let's subject any claims to a blind test.

 
Been there, done that. Here's an example of a file I played at my address to the New Music Seminar last week in New York. This download link is good for 7 days.
 
The file is at 44.1 kHz. The second half was upsampled to 96 kHz then downsampled back to 44.1 kHz. If you can't hear a difference between the first and second sections, especially with headphones, you should probably consider a career path that involves something other than audio. 

Thanks Craig.
I'm pretty new and I think that example was great for a newb like me to get the idea 'ears on.'