Two-Part Question & Request: Plugindoctor vs. UAD DSP Plugins, and Cambridge EQ Analysis

[2:43AM]

Do UAD non-native (DSP) plugins work in Plugindoctor for analysis? If so, can someone with the Cambridge EQ (DSP only) and Pro-Q3 do a test between the two, specifically measuring the slope of the Elliptic 6 high-pass filter?

The UAD manual says it's "close to a brickwall filter," but I would like to confirm it. I'm guessing it's more like a 48, 72, or 96dB/oct slope, with a slight knee and some resonance vs. the hard-edged full-on digital brickwall like in Pro-Q3, or Ozone.

EDIT: I have Plugindoctor and Pro-Q3, but not an Apollo card/interface. I am trying to gleen a little info from a Pensado "Into the Advertisement" video where he seems to really love the Cambridge EQ's filters.

TIA.

[Jac459]

Do UAD non-native (DSP) plugins work in Plugindoctor for analysis? If so, can someone with the Cambridge EQ (DSP only) and Pro-Q3 do a test between the two, specifically measuring the slope of the Elliptic 6 high-pass filter?

The UAD manual says it's "close to a brickwall filter," but I would like to confirm it. I'm guessing it's more like a 48, 72, or 96dB/oct slope, with a slight knee and some resonance vs. the hard-edged full-on digital brickwall like in Pro-Q3, or Ozone.

TIA.

Don't you have a visualizer in your DAW? So you can check all frequencies are killed?

[2:43AM]

Do UAD non-native (DSP) plugins work in Plugindoctor for analysis? If so, can someone with the Cambridge EQ (DSP only) and Pro-Q3 do a test between the two, specifically measuring the slope of the Elliptic 6 high-pass filter?

The UAD manual says it's "close to a brickwall filter," but I would like to confirm it. I'm guessing it's more like a 48, 72, or 96dB/oct slope, with a slight knee and some resonance vs. the hard-edged full-on digital brickwall like in Pro-Q3, or Ozone.

TIA.

Don't you have a visualizer in your DAW? So you can check all frequencies are killed?

I don't have an Apollo card/interface.

[Jac459]

Do UAD non-native (DSP) plugins work in Plugindoctor for analysis? If so, can someone with the Cambridge EQ (DSP only) and Pro-Q3 do a test between the two, specifically measuring the slope of the Elliptic 6 high-pass filter?

The UAD manual says it's "close to a brickwall filter," but I would like to confirm it. I'm guessing it's more like a 48, 72, or 96dB/oct slope, with a slight knee and some resonance vs. the hard-edged full-on digital brickwall like in Pro-Q3, or Ozone.

TIA.

Don't you have a visualizer in your DAW? So you can check all frequencies are killed?

I don't have an Apollo card/interface.

Oh ok, gotcha.

[2:43AM]

Nobody can lend a hand in the spirit of pluginmenship? Perhaps the Cambridge plugin is terrible?

[Funkybot's Evil Twin]

First image is the Cambridge with an Elpitical 6 filter at 15k. It's got a weird little ripple thing happening.


Next up is the Cambridge+ProQ3 with the latter set to a 96db slope and a little bit of resonance. Doesn't quite have the ripple thing, but the slope looks close enough to me.

[2:43AM]

First image is the Cambridge with an Elpitical 6 filter at 15k. It's got a weird little ripple thing happening.


Next up is the Cambridge+ProQ3 with the latter set to a 96db slope and a little bit of resonance. Doesn't quite have the ripple thing, but the slope looks close enough to me.

Awesome! Thank you so much for doing this! It's cool to see the quirkiness of the filter, and it's great to know that the UAD DSP-only plugins work in Plugin Doc for analysis!

Can you please check a high-pass filter, let's say at 100Hz to confirm the same characteristics? Also, can you extend PD's range on the Y-axis to see how cleanly the filter acts in the stopband? How? I just recently discovered** this feature in PD where you can extend the Y-axis range by holding the mouse cursor over the values, holding CTRL and rolling the mouse wheel down. This is a great way to confirm filter operation down to -60, -90, -100dB, example. Double-click to reset. TIA!

Some Waves' plugins have some weird filters. H-EQ's filters is what initially got me into checking "below the line." RChannel has better, but still weak-in-the-stopband filtering. See attachment. Analog-modeled characteristics, I suppose. Pro-Q3 is about as clean as one could ever ask for.

[Funkybot's Evil Twin]

The HP looks the same. Here you can see an HP at 100hz versus the LP at 15k.

[2:43AM]

The HP looks the same. Here you can see an HP at 100hz versus the LP at 15k.

Right on! It appears that the slope could go on "infinitely" below the range shown, as well.

I love it when a plan comes together! Thanks for doing this!

[TIMT]

EQuilibrium has Elliptical filters, so it would be better to compare it with that. all Elliptical filters have ripple in the passband. the Sonnox stuff is made using Lattice filter designs too which makes them have slightly different phase characteristics when the bands interact. i've never used Cambridge EQ despite having a Satellite, but i do have Oxford EQ. i don't remember it sounding special despite their claims to the novelty of the filter implementation, but i haven't opened it in a good few years

here's a free option: https://plugins4free.com/plugin/951/