Could also be the flatness of the tone, or the simplicity of modelling, producing a more stationary lifeless tone, rather the the 'evolving' distortion points of a better model.Does the aliasing have any relation to why many older modelers were hard to get in the mix(too loud-steps on other instruments or not loud enough)?
Actually it can be argued that the sampling rate is some very high, finite value equal to the quantum time interval (in theory time is not continuous but quantized like everything else in the universe).
In this case one could say that analog amps also alias, but it's beyond any measureability.
Analog circuits are analogous to a digital circuit with infinite sampling rate.
The issue of aliasing within amp modelers doesn't happen at track sample rate (e.g. input 48 kHz vs. 192 kHz), but within the amp modeling. So it would depend on whether Helix Native plugin's amp models over-samples more than the hardware Helix unit.
Right... and we're talking about the "+ any applicable oversampling" part. The discussion is aliasing within amp-modeling.I'm not sure that's the case, plugins process audio at the native sample rate in the DAW (+ any applicable oversampling) as far as I am aware.
How'd you find that out? (That was my guess since it converts the IRs it uses to 48 kHz.)Actually, Helix Native downsamples everything to 48 kHz whatever your project is set to.
How'd you find that out? (That was my guess since it converts the IRs it uses to 48 kHz.)
It wasn’t me. If I find the source, I’ll post the info here, although it was in Russian originally.
You can sort of see what’s happening indirectly because CPU usage grows at sample rates other than 48.
EDIT: here’s the link - https://forum.guitarplayer.ru/index.php?topic=376722.msg10391222#msg10391222
Like I said, it’s in Russian (Putin’s hackers did it, as usual ), but I’ll explain. The guy made an empty preset with no effects (first screenshot), and passed noise through the plugin at different sample rates. You can see anti-aliasing filters at work at all rates except 48 kHz, so there’s resampling going on there.
Awesome! Russian gear heads! lol
Do you know Russian? Google Translate works well for me here
Interesting! Read it quick, so I dunno at all But...I like the fact that he talks about the "Nyquist-Kotelnikov frequency", actually we have to give credit to many people for sampling theory: Harry Nyquist, Claude Shannon, Vladimir Kotelnikov and E. T. Whittaker among others.
I was reading a bit about nonuniform sampling (samples not taken equally spaced in time) as an alternative to filters to avoid aliasing, I'm sure Cliff is aware of this type of sampling and its possible drawbacks:
Kemper has worse aliasing than most modern modeling products. Among the worst I've measured actually. That 10-year old chip doesn't have enough processing power to oversample adequately to suppress the aliasing.Apparently Kemper has NO ALIASING as it’s not a modeler and process the signal in a very much simpler way (that’s also why they don’t need any expensive DSP, running on a 10 years old chip...)