KVR Audio

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 9:43 am

I couldn't find a free EQ with automatic match function. I'm not sure if there is none yet or I'm missing it.
Is there a free EQ that I can compare a track's spectrum with an analyzed sidechain signal as a reference? Or it would be great if I can freeze the spectrum of the signal and load the curve to be compared.
Is there any free EQ like that or using an analyzer such as Voxengo SPAN is the only free option?

mabian · Post by **mabian** » Mon Jul 07, 2025 10:03 am

TDR Prism: https://www.tokyodawn.net/tdr-prism/

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 10:44 am

mabian wrote: Mon Jul 07, 2025 10:03 am TDR Prism: https://www.tokyodawn.net/tdr-prism/

Thanks for letting me know. Ah, right! I forgot about Prism. It's a great analyzer. So using an analyzer for comparing is the only free option at this mement, I guess.

swindus · Post by **swindus** » Mon Jul 07, 2025 10:52 am

Maybe this one can do what you want: https://github.com/ZL-Audio/ZLEqualizer

ere2learn · Post by **ere2learn** » Mon Jul 07, 2025 11:14 am

https://www.tokyodawn.net/tdr-nova/

Has sidechain input, but it wont display both at the same time, you just need to flick between them

ReverendLove · Post by **ReverendLove** » Mon Jul 07, 2025 11:22 am

ZLEqualizer has a match workflow.
IMHO actually the best free equalizer.
https://zl-audio.github.io/plugins/zlequalizer/

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 12:41 pm

Thanks. I downloaded and played around a little bit, but but still have to dig more to get used to it. I'll try some more.

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 12:44 pm

ere2learn wrote: Mon Jul 07, 2025 11:14 am https://www.tokyodawn.net/tdr-nova/

Has sidechain input, but it wont display both at the same time, you just need to flick between them

Thanks. I use it sometimes and it is quite nice eq.
Yeah, that's what i figured. I couldn't see both of signals at once.

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 12:45 pm

swindus wrote: Mon Jul 07, 2025 10:52 am Maybe this one can do what you want: https://github.com/ZL-Audio/ZLEqualizer

Thanks. I downloaded and played around a little bit, but but still have to dig more to get used to it. I'll try some more.

Piggywulf · Post by **Piggywulf** » Mon Jul 07, 2025 12:47 pm

ReverendLove wrote: Mon Jul 07, 2025 11:22 am ZLEqualizer has a match workflow.
IMHO actually the best free equalizer.
https://zl-audio.github.io/plugins/zlequalizer/

Can it display main and sidechain signals at the same time?

Cuauhtli · Post by **Cuauhtli** » Mon Jul 07, 2025 2:38 pm

Routing both tracks to a third track and displaying them there is the only way I can think of.

El°HYM · Post by **El°HYM** » Mon Jul 07, 2025 3:02 pm

TDR - Nova (free) should be able to do this.
https://www.tokyodawn.net/tdr-nova/free

Piggywulf · Post by **Piggywulf** » Tue Jul 08, 2025 9:56 am

Cuauhtli wrote: Mon Jul 07, 2025 2:38 pm Routing both tracks to a third track and displaying them there is the only way I can think of.

Sorry if I didn't understand it right. Doesn't it add up two signals into one? I want to see two different spectral curves in a single display to compare. Maybe I can compare two curves in an analzer plugin such as Span or Prism, but I want to know if there is a free eq vst to do that.

Piggywulf · Post by **Piggywulf** » Tue Jul 08, 2025 9:57 am

El°HYM wrote: Mon Jul 07, 2025 3:02 pm TDR - Nova (free) should be able to do this.
https://www.tokyodawn.net/tdr-nova/free

As far as i know, only paid version of Nova or SlickEQ has match function.

ampetrosillo · Post by **ampetrosillo** » Wed Jul 09, 2025 8:06 pm

If you use Reaper as your DAW, there is a JSFX matcher.

https://geraintluff.github.io/jsfx/#Spectrum%20Matcher

If you don't use Reaper, you can load this script (because it is essentially a script) into ReaJS.

https://www.kvraudio.com/product/reajs_by_cockos

A free EQ that can compare with analyzed sidechain signal?