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Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

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Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby triggerthehorizon » Thu Feb 20, 2014 1:48 am

Is it normal that I have to set the DSP Buffer at max (8XXX) in Nebula3ProReverb when using a reverb or delay 3rd party library with a native sample rate of 96k in a 96k (no sample rate conversion) session in my DAW to avoid serious stuttering and distortion? Anything less than the 8000 setting is unusable because of the stuttering and distortion. but I have a fairly new system, only 1 year old:

I use the latest version of Nebula 3Pro 1.3.636 64bit in the latest versions of Reaper and Presonus Studio One. Results are the same in both DAWS

This is my machine:
Windows 8.1 64 bit
Processor, Intel Ivy Bridge, I7-3770, 3.4, 77W,
32 gigs of DDR3 ram
256gb SSD HD for OS
Nebula prorams on dedicated hard drive.
sound card: F*******e Saffire PRO 24
GFX card : Nvidia GTX 660
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby mathias » Thu Feb 20, 2014 3:27 am

for reverbs with longer tails, my experience is, that the longest possible buffer works best (setting on mast page).

you can see on the kernelpage, how long the tail is, by the kernellength.
system 1: windows 8 32 bit - samplitude prox, tracktion6, reaper
system 2: mac osx yosemite - reaper(32+64bit), tracktion6(32+64bit)

both systems on: macbook pro (late 2009), core 2 duo 3,06 ghz, 4 gb ram, graphic: nvidia geforce 9600M GT 512 MB
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby Tim Petherick » Thu Feb 20, 2014 4:15 am

Ok,

You can deal with this in two ways, each at the expense of quality but in a different way.

If you use higher buffer it will reduce the cpu but at the expense of program rate getting slower...

If you take the length of the distortion harmonics down in the kern page you can have lower buffer and faster pragram rates.The distortion will only be changed on the tail length, so might not be obvious.

So it's up to you which you should tweak , each will change sound quality in a different way.

Hope this helps


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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby triggerthehorizon » Thu Feb 20, 2014 5:16 am

Thank you for your input Gentleman. I take it that this is not abnormal then? I was worried there might have been a problem with my drivers/hardware/config. I guess I'll just stick to 48k as that seems to work just fine.
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby jorismak » Thu Feb 20, 2014 11:57 am

I guess a nebula program with a long tail can still max out a single core of any modern CPU. I haven't been able to properly preview a reverb program without turning down the kernels or something on my Core i7 @ 3.5ghz, I have to render to hear what it sounds like :).

Probably the reason why I never really looked into Nebula reverbs.
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby Will The Weirdo » Thu Feb 20, 2014 5:09 pm

Some Nebula verbs will do this some don't. The verbs sound so lush it's hard not to use them, simply choose another and see if your computer can handle it. Patience when using verbs is a must in Nebula land.
System 1 - i7 5820K Win 7 x64, Studio One 3.2, Reaper 5, Live 9.6

System 2 - AMD 1100T Win 7 x64, PT HD2 10.3.7

"In cognitively demanding fields, there are no naturals." - Simon and Chase
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby dagovitsj » Thu Feb 20, 2014 6:46 pm

triggerthehorizon wrote:Is it normal that I have to set the DSP Buffer at max (8XXX) in Nebula3ProReverb when using a reverb or delay 3rd party library with a native sample rate of 96k in a 96k (no sample rate conversion) session in my DAW to avoid serious stuttering and distortion? Anything less than the 8000 setting is unusable because of the stuttering and distortion. but I have a fairly new system, only 1 year old:

I use the latest version of Nebula 3Pro 1.3.636 64bit in the latest versions of Reaper and Presonus Studio One. Results are the same in both DAWS

This is my machine:
Windows 8.1 64 bit
Processor, Intel Ivy Bridge, I7-3770, 3.4, 77W,
32 gigs of DDR3 ram
256gb SSD HD for OS
Nebula prorams on dedicated hard drive.
sound card: F*******e Saffire PRO 24
GFX card : Nvidia GTX 660


Yes, all the stuttering disappeared when I changed my buffersize to 8192. BUT, have you tried to use CUDA?
I use CUDA for all the reverbs, and then I can use my modest i5 cpu to other Nebula stuff. Works like a charm ;)

And of course - I have made different setups in Nebula Setup to load VNXT 140, EAR etc - all with the CUDA settings to get this to work.
|Win 7-64bit | Reaper 4. x64, Cubase 6.5.3., 64 & 32 bit | RAM:16 GB | CPU: Intel Core i5 760@ 2,8 GHz | Samsung SSD 830 (256 GB) | WD: Black harddisks | Graphics Card: NVIDIA GeForce 9800 GT Graphics Accelerator | Gigabyte GA-P55A-UD4 |Nebula 3 Pro |
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby jorismak » Thu Feb 20, 2014 10:09 pm

One time i tried cuda it was a pita to get working (no blinking stuff in MAST page :)), and then it was much much slower than normal . But I only tried short programs (preamps, tape and such). Might be more overhead then speed increase Will try again.

Is cuda even working these days on modern cards? I thought it needed an old cuda sdk to work.
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby harmonik » Fri Feb 21, 2014 6:01 am

Tim Petherick wrote:You can deal with this in two ways, each at the expense of quality but in a different way.

If you use higher buffer it will reduce the cpu but at the expense of program rate getting slower...


Don't you just mean latency will increase? How can a higher buffer setting change PROG RATE or make quality go down?
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Re: Nebula 3 Pro 96k Reverb & Delay Programs = Stuttering

Postby triggerthehorizon » Fri Feb 21, 2014 6:19 am

I agree that the reverb and delay programs in Nebula are really lush and alluring. Lowering the kernel length does seem to help out. As for Cuda, it seems pretty difficult to set up , requiring old drivers and all and some people have reported less performance than their cpu alone... Not very tempting to use
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