DIVA quality setting for projects at 88.2 kHz or above

[billcarroll]

I switched to 88.2 kHz sample rate for projects in Ableton and noticed DIVA is far more CPU hungry, which I'm guessing is to be expected. It pretty much becomes a requirement to run DIVA at draft quality all of the time.

It seems like running the DAW at a higher sample rate should have some affect on the need for oversampling in plugins.

Does running a DAW at a sample rate 88.2 kHz or above affect the quality setting in DIVA? Probably a poorly formed question, but essentially I'm trying to learn how the DAW sample rate affects DIVA and the quality settings we should be using online and offline.

And, now that I think about it, how does the DAW sample rate affect Zebra?

Thanks in advance for any help understanding this

[pdxindy]

going from 44.1 to 88.2 basically doubles cpu use

[EvilDragon]

Sample rate does not affect the quality of DIVA, IIRC.

[David Else]

i would love to be able to turn off all oversampling and run DIVA at any sample rate to compare the sound.

i find often real time oversampling sounds bad, subtle but nasty, things get smaller and less solid, i wonder how DIVA would sound with no oversampling at 192k then downsampled with something great like SoX?!

Offline 'no holds barred CPU use' HQ oversampling with SoX = the ultimate.

For a synth that attempts to be the ultimate in sound quality i would like my renders to take at least an afternoon!

if you read this URS, please add it to your feature request list

[nilhartman]

I'd love to read Urs about that, if there's supposed to be a difference between Divine in realtime or Best quality offline, as I'm compelled to record Diva's output in realtime to 32/96 in Ableton (because Live won't record to MIDI properly the CC flux coming from Numerology, unfortunately).

[3ee]

Sample rate does not affect the quality of DIVA, IIRC.

I strongly disagree...
I guess that all u-he synths greatly benefit when using higher sample rates, but at least for Zebra and Diva I'm sure.

Simple Diva test would be to load a simple saw template and play a few notes together to hear how the notes drift ..to make it more noticeable, blend a bit of a 2nd osc with a tiny bit of detuning. ... play different notes and chords for a couple of minutes to get used to the sound details @ 44.1k

Hold single low notes as well (some drift will be perceived if more than one osc is used)... instant clarity and deep thickness once switching to higher sample rates like 88.2k or 96k

...an even more noticeable difference is with Zebra.
load a simple saw wave, set it to quad or eleven wave mode and detune a little bit and play ... dunno about others but that was an instant clarification for me.
..I thought to myself .."SOB, Zebra is the software Virus"

..so, in general, the real difference between 44,1k VS higher sample rates would be when 2 or more waves interact.

[EvilDragon]

I vaguely remember Urs saying that there's not much benefit in raising the samplerate for Diva, since all internal processing in Diva is already several times oversampled, etc... Urs please correct me if I'm wrong.

[maurone dj]

Diva is already several times oversampled already, etc...

Yeah I remember reading it somewhere!

[xh3rv]

The 'zero-delay' in Diva's lauded and lovely 0df(+non-linearities) filters refers to a pretty awesome rewriting of filtering problems into continuous-time terms. This is like oversampling so much samples are infinitesimally close (well, not just 'like' - it's magic, I mean it's Calculus!).

I couldn't confidently say oversampling doesn't change the output of Diva, but the filters should be *correct* at 44.1k in a way sample-delay filters can never be correct.

[billcarroll]

Does running a DAW at a sample rate 88.2 kHz or above affect the quality setting in DIVA? Probably a poorly formed question, but essentially I'm trying to learn how the DAW sample rate affects DIVA and the quality settings we should be using online and offline.

Urs, any chance you could enlighten us on this?

Thank you!