I think you mean 20 Hz to 24 kHz beep. 

Beepster
buh?
 
And for all these years I was under the impression that working above 48khz was useless cork sniffery... or so I was told.
 
So I dropped down my working samplerates from 96khz to 48. This was wrong?

There's a difference between recording/playing back and DSP processing.
 
Some types of processing benefits from being done at a higher sample rate, and hence many, many plugins that use such processing already do the upsampling internally themselves. But for various reasons some plugs might not do this internally even though they really should, so now Sonar has a feature that allows one to address this.

John

drewfx1
 
 
Barring bugs or incompatibilities, I wouldn't expect it to make things worse in the many cases where it offered no benefit (unless you were deliberately going for a grungier sound). It would basically just waste a bunch of CPU processing at a higher rate and then filtering out stuff that isn't there in the first place.

This is along the same lines as my thinking. I am at present unconvinced. I have been quite happy with the output for all the synths I use. I have never thought "gee this would sound better with oversampling".
 
 

 
I suspect that in the more obvious cases we would just naturally choose not to use plugins that sound "bad" because of the problems this addresses.
 
But in some cases, for some people it will be of benefit.

Anderton
For example with drums, foldover distortion might make the sound appear "fatter" so removing the distortion sounds subjectively less desirable.

 
Oddly enough there are cases where the oversampling can make a sound fatter. You just have to try it and see.
My theory for why that might happen is that the foldover distortion can potentially result in phase cancellation of low/mid frequencies. When you upsample there is no distortion so the original low mid's are preserved.
I noticed this when trying it  on the SI electric piano, something I wouldn't have expected upsampling to make a difference on. 
 
I'm definitely interested in hearing reports of peoples experiments. Perhaps we can compile a list of plugins that benefit positively from upsampling.

lfm
I just noticed - helpfile says there is to be a field in plugin manager for this render-options - but it's not in my install anyway.

 
Thats an error in the help - we had originally planned for it to be there but it didn't make sense..

Doktor Avalanche
Well I don't know of any global settings that can get changed in Sonar, that can alter sound, other than via preferences and plugin manager. Correct me if I'm wrong? Plenty of studios share DAW computers as you know...

If you have a multi user setup and care about someone changing your settings, you shouldn't be sharing the same user profile. That said all the resampling settings are stored in aud.ini (which is per user) so you can easily backup and restore the config settings if you need to. And even latency settings can "alter sound". There are some plugins that sound different at different buffer sizes. 

I understand we now have up sampling when needed but why this feature instead of so many other things that have been requested.
Or was this something easily done on the road to another feature down the track some time?

mudgel
I understand we now have up sampling when needed but why this feature instead of so many other things that have been requested.
Or was this something easily done on the road to another feature down the track some time?

Not speaking for Cakewalk here, but it seems to me that since the 64-bit engine introduction, all the improvements have related to workflow or functionality. This is the first one I can think of since then that improves a DAW's actual sound quality. Granted it's relevant only to those who do "in the box" productions with plug-ins, but I would think that's a pretty hefty percentage of the user base.
 
As to "easy to do," I think in principle it seems easy to do, but when you dig into it there are other considerations - like what happens with automation when you double the sample rate for processing. I don't think it was something Noel did on his lunch hour but with him, you never know 

Presumably someone designed the plugin. Perhaps he had enough understanding of digital signal processing to make that design, efficient, if not accurate to the result he had intended. Part of his design process might have been to design in upsampling where he felt that it would benefit the result of the anti-aliasing filters he also built in, or perhaps he was too stupid or lazy, or too concerned about the performance hit it would take. In any case, those filters would have been designed to work at the frequency he expected to encounter in the input to the plugin. Does it follow that providing his plugin with input frequencies beyond their design range will improve the performance of what might have been a delicately tuned system? If the result of providing an extreme oversampling at the input stage does produce an audible difference, does that indicate that doing so has resulted in a more accurate signal processing output?

Title says it all. 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.
 
 
Thanks