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Using the 1176LN as an example, insert it into a project using a 128 project latency and you will see the PDC correctly state 128 (1 x the project latency = 128). You can easily verify this in REAPER using it's plugin analytics. The LT mode eliminates this extra processing overhead as it bypasses the I/O processing transfers to/from the DSP card and uses the native CPU instead. If at 128, each UAD-2 plugin adds 128 samples to the plugin latency (total 256). If you are at 1024 then each UAD-2 plugin adds another 1024 samples to the total plugin latency (total 2048).
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For the UAD-2 this equates to 1x whatever the project latency is set at. The time it takes to shuttle data to/from the card. What LT mode does is eliminate the inherent plugin latency that you get when using a DSP card. When you are done tracking simply turn the LT mode off as you don't need it when playing back. Set your project latency to say 128, enable input monitoring and simply enable the LT mode on the 1176LN and now you have zero plugin latency when tracking. Say you have a 1176LN in the FX bin with your favorite amp sim and you want to record a new track or overdub using the 1176LN in "All buttons mode" to add a little more bite in combination with your amp sim. Where the LiveTrack mode does come in handy is when you are tracking/overdubbing or want to run a monitor mix and are using UAD-2 plugins at lower latencies. You would only enable those plugins that are affected.
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You would not use LiveTrack mode when you are in the mixing phase as it is not necessary (with DAW's that have auto PDC), and will only burden your native CPU.
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I can only get (2) FATSO's running in LT mode crackle free, but adding a third will give the rice crispies as my native CPU is pushing 60%-70% wilth just those three plugins. Thank God for my UAD-2 QUAD, as I can easily run (8) upsampled FATSO's (with tranny enabled) and my total native CPU hit is about 4% 128 samples and still have about 20% DSP left for lot's of less DSP intensive plugins. It kinda makes the WaveArts Tube Saturator look rather CPU light in comparison. With LT mode disabled the native CPU load drops to near zero (about 0.6%) as all the processing is done off the UAD-2 DSP at that point. One stereo instance of the upsampled FATSO (with tranny enabled) uses about 21% of my E8400 (3Ghz) Core 2 Duo when in LT mode 128 samples ASIO. Quite interesting to see how much native CPU a UAD plugin uses. The LiveTrack mode will increase native CPU use as the UAD-2 plugins are essentailly running off your native CPU. I am hoping it can handle non-UAD plugins, as well.Billy Buck are you saying when mixing turn on that mic icon to cut cpu?
#UAD PLUGIN CODE#
I don't know how Cakewalk would know to use this thing for any effects processing, and my uneducated guess on the whole thing is that the UAD plugins may contain code that checks the presence of any such available DSP accelerator, and then routes the processing requests to the accelerator. Thanks for any help in understanding this well enough for me to make an informed decision on this purchase.
#UAD PLUGIN PLUS#
I guess it still could be cool, but only when I would use the UAD plugins it comes with, plus the freebie ones they give if I buy the unit. SO, my question about this accelerator is - will this somehow also help NON-UAD plugins? If so, it seems like a pretty helpful expansion card for my computer, to take the burden of effects processing off of my CPU. Here is the link to that product, if anyone wants to review it to help answer my question: OK, so I saw a link today, at Sweetwater, for a UAD PCIe card quad-core DSP accelerator, that also comes with some of their plugins, and there is an additional freebie collection of other plugins that come with purchase of the card.