Hi,
My issue is this, I am able to record guitar without any latency or digital noise into my nuendo sequencer. UNTIL I insert amplitube. I can get one track to thru amplitube (for a while) and then i get terrible digital distortion. Now if i try and insert Amplitube into two tracks its a total non starter all i get is horrible digital distortion. My PC is running windows XP, AMD 2GIG Proc 2 GIG RAM. I have verified the ASIO driver configeration and I am running the Lexicon OMEGA ASIO driver which seems to be working apart from with Amplitube.

If Anyone can help me with this I will be so HAPPY

Adam

Disclaimer: I'm no expert, that said I never use any type of VST effect in an insert track when I'm recording. I just keep them all slightly below clipping.
I'll add the VST effects to the track after recording in a VST effect slot. Adjust to taste.
Putting effects in during tracking is a huge commitment that it's going to work with in the song after everything else has been added. I found out the hard way that doesn't always work out. Of course recording live you get what you get.
I'm pretty primitive and use my Cubase SX pretty much like I would a tracking to tape. No midi and nothing fancy. Keeping the CPU load low.

What's the cpu load doing before and after you install the Amplitube on the track?
An overload there may cause both of the problems you experiencing.

Hi Dutchman, Thank you for your responce!! I am actually inserting the amplitude on the playback track and not on the input (recording) channel. CPU usage with cubase playing 5 tracks of guitar in cubase at 44.1 24bit is ~8% adding amplitude to 1 track takes it up to about 10% at peak. I have checked all the input gains for clipping and verifed that there is no buss routing issues within the mixer. I am kind of at a loss to what is causing it or wondering even if Amplitude will work on multiple tracks inserted on playback?

Any Help on this will be truly appreciated

Adam

You should be able to monitor Amplitube while recording. There's a setting within Cubase somewhere - I forget where now - that will allow you to monitor "live".

As far as inserts go, you're not committing or "printing" a track by recording with the VST inserted on the track before or while recording. You can have any or as many VST inserts on that track as your system can handle. You can take all of those back off after recording and still have the raw clean signal there just as if you had never inserted the plug in the first place. The only time that processing becomes permanent is when you export a mix - say you want a stereo guitar mix out of two mono tracks for example. If both those tracks have VST inserts at export then they become permanent effects in the stereo track. Next to the red record button on the track, click the orange-ish button next to it to monitor the track with VST plug inserted while recording. Again, it's not committed until you export the track. You should be able to monitor the track with VST plug inserted.

I use Cubase SL3 on a Pentium 4 with Amplitube 2 and SVX without too much hassle. I actually try not to use guitar plugs and just use my offline effects with amp/mic to get some sort of ambience in to the thing, but occasionally I try something different with A2.

How are you getting to the 5 tracks of guitar? Describe your recording process a little bit. Two tracks for acoustic, two for electric... for example?

The more tracks you add inserts to the greater the CPU load for sure. Do a search on google for optimizing your system for steinberg or Cubase or Nuendo. I forget exactly which keyword, but there are a few sites out there that will tell you what services on your computer you can safely shut off. You want to make sure that XP shuts any other users off before your "music" account is running, for example. Unless you tell it otherwise it supposedly runs some applications for the other user accounts in the background. There are a few things like this that you need to take care of. Anyway there is a site out there that tells you how to optimize for Steinberg apps. Everything from version 3 up on Cubase uses the Nuendo engine - so look for Nuendo optimizing tricks.

-the other Adam

Hi Adam thanks so for the responce. OK here is what I am doing - in the drum editor i sequenced a simple drum loop and have that assigned to the LM7 on midi channel 10. For guitars I am going stight into the input channel of the Lexico Omega and (clean) and recording to channels 2 thru 5. As you said I am not printing the Amp2 to disk just inserting it into the playback channel. if i insert it into 1 playback track it will process the audio and I can here all the Amp2 amp configerations - for a while When I start to add certain parameters could be EQ or delay can be anything the guitar playback will be saturated with a terrible digital distortion. I can remove the AMP2 from the insert, sometimes the audio cleans right up - sometimes it takes for a reboot of Nuendo to clean up the distorion. Now if i try and insert AMP2 into 2 playback tracks i can guarantee that i will get the distortion and be forced to reboot.Now without using AMP2 and recording with the Line 6 thru the lexicon printing my guitar effect to disk I am not having any issues at all. I just really wanted to be able to change the amp configs within AMP2 when mixing and not have to print the audio. I am wondering if this is related to an ASIO issue..?

Thanks again for all your assistance

Great name by the way

Yeah, Amplitube will do that to ya. I've had the same problems. Amplitube is just so heavy on the processor that it bogs things down pretty quickly, especially if you start adding stomp boxes and rack effects.

While you're recording, just leave Amplitube out of the equation. Once everything is tracked, increase your buffer size and that'll give you some headroom to screw around with plugins.

Thanks for the responce, I am using an AMD proc, could this be the cause of some of these issues?

I really can't imagine that the type of processor would have an effect, but I could be wrong. The speed would definitely factor in, though.

Did you try changing the buffer size?

I was kind of trying a hybrid approach - experimenting a while back, mic-ing the cab as opposed to DI and then inserting A2. I could model a certain amp (sort of) with a Digitech pedal board and then split the outgoing signal, one DI, one mic. There are some interesting things to try with A2.

I agree with Walker, some of these things are hogs. Longterm it seems to me getting plugs that are chip based PCI (PCI-e) like the UA stuff might be the way to go if you're going to process stuff in the box. Too many native plugs definitely can bog it all down.

Thanks Guys !!

I have had a busy week so not had a chance to try any of the tweaks yet but going to hit it hard this weekend and will let you know how it goes.

Really do appreciate the time you spent to respond and help me out here !!

Adam