What is happening under the hood of Renaissance EQ?

[audiorea]

I'm using a translator. Please excuse me.

I'm happy with Pro-Q3 and Claro and never thought I'd like another EQ.
However, there was a blockage in the process of working today, and there was a REQ in the Bundle I bought for $75 so I tried it.
Damn, it took less than 30 seconds to fix it.
I was surprised and explored REQ more, and their HPF sounded really musical and different.
It sounded perfect without additional processing.
What is happening under the hood of REQ?
It's a simple curve difference, but does it sound good because it's a sound that's been in for a long time?
In fact, I don't care if this plug-in has a secret or just a different curve.
I just wanted to share the experience. If you've never used Renaissance EQ before, I hope you try it.

[imrae]

I had a little play with these curves and wrote something here: https://phaseboundary.com/2017/09/10/cu ... equalizer/

The main “trick” is that for a given Q value the bell boost is broader than the cut. The shelves also have a nice swoopy resonant shape so you get a little cut above the corner frequency of a shelf boost.

But mainly I recommend reading the PDF user manual for RenEQ, it is really good with lots of insight.

[audiorea]

I had a little play with these curves and wrote something here: https://phaseboundary.com/2017/09/10/cu ... equalizer/

The main “trick” is that for a given Q value the bell boost is broader than the cut. The shelves also have a nice swoopy resonant shape so you get a little cut above the corner frequency of a shelf boost.

But mainly I recommend reading the PDF user manual for RenEQ, it is really good with lots of insight.

That's an interesting experiment. Thank you!
I think it's fun to induce users to quickly make good sounds with this curve design.

[keyman_sam]

The manual explains it but the gist of it I think is it’s modeled after the pultec eq? There’s some boost happening when you cut and vice versa so it’s less surgical and more of a musical eq.

[imrae]

The implementation is quite different from Pultec: the “pultec trick” is to cut and boost simultaneously with shelves that have slightly different corner frequencies, whereas this kind of EQ uses a resonant filter to make a shelf. Both approaches can give a little dip above a low boost, but in the Pultec approach it is controlled by gain whereas with resonant EQ it is manipulated by the Q/bandwidth control.