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Smooth Operator

Spectral Effects by BABY Audio
Smooth Operator Smooth Operator
What is it?
Operating System Availability
Operating System Latest Version
System Requirements
PC Windows 7 and up
System Requirements
Mac OS 10.7 and up including Catalina and Big Sur
License & Installation Method
Voucher / Code for redemption on other website
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For related news items, downloads and more please see the full KVR product page for
Smooth Operator

Introducing clarity on demand.

Smooth Operator combines equalization, spectral compression and resonance suppression into a singular creative experience that's instant and intuitive. Use it to perfect your tonal balance and add a touch of 'HiFi'.

Our spectral detection algorithm adapts to your audio 44,100 times per second and automatically eliminates fatigued frequencies. This gives you full control to shape your signal and bring out more definition.


  • Brings out clarity and smoothness across instruments, vocals and mix busses.
  • Allows for creative tone shaping without artifacts or harsh resonances.
  • Intelligent algorithm that automatically detects and resolves fatigued frequencies.
  • An alternative to EQ, compression and resonance suppression in one unified workflow.

What is Spectral Processing?

The easiest way to understand Spectral Processing is to think of it as manipulating the building blocks that make up a digital signal – rather than the actual signal. Our algorithm uses Fast Fourier Transform - or FFT - to break the incoming audio into tiny particles, which are analyzed and processed separately, before being put back together again. This all happens in realtime and allows for a much more surgical approach to resonance detection and rebalancing than what would be possible with traditional audio effects.

While most spectral tools focus on audio restoration, we wanted Smooth Operator to be all about creative expression. The plugin is meant for shaping your tone. Use it to compress, EQ and 'purify' in one simple process – and know that Smooth Operator has your back when it comes to automatically eliminating artifacts.


Smooth Operator comes loaded with 63 presets created by friends of BABY Audio - including:

  • Preston Reid (Ciara, Toni Braxton, Lil Uzi Vert).
  • David Nakaji (Post Malone, Aminé, Lil Eazzyy).
  • Rob Kleiner (David Guetta, Sia, Britney Spears, Giorgio Moroder).
  • Neenah (Winne, Mr. Probz, Nana Fofie, Joe Budden).


  • Switch between three color modes (Pink / Green / Blue).
  • Plugin window fully resizable.


{See video at top of page}


User Reviews Average user rating of 5.00 from 2 reviews Add A Review

Smooth Operator
Reviewed By tommyzai
September 29th, 2023

Smooth Operator by Baby Audio! I finally got it! I have wanted this since its release, believing it was a potent resonance suppressor with a simplified "smooth" workflow. I was right. But, I soon after realized that it is much, much more. Smooth Operator is a beautiful multi-function, dynamic tone-shaping plugin that combines Resonance Suppression and Spectral Compression and Equalization to improve balance, clarity, fidelity, and tone. This audio plugin is a sensational sonic clutter remover.

Like all Baby Audio plugins, Smooth Operator reveals a lovely, minimalistic, inviting interface. Background color options include three eye-pleasing pastels (Baby blue, seafood green, and Baby pink). Using "baby" colors did not escape me. The preset browser is at the top/center, with a Baby Audio logo to the left and the right. I found the double logos odd initially, but soon after, I discovered a reason, which I will reveal in the next section of my review.;-) Other viewable controls include a Mute, Side-Chain for ducking, creating space, etc., and Reset icons, Solo button, Focus slider (globally increases the intensity of the frequency range throughout the nodes, Output slider, Peak button toggles between Peak and RMS, which is handy, especially when used on Mix Bus, and a little corner gripper to scale the interface. The main window has five nodes spanning a 20 to 20k range. And that's it! Nothing daunting. It has a simple yet powerful approach to selecting a frequency and determining how much to process. Smooth Operator is very approachable, so I approached. ..

This Baby is easy to use. It comes with 64 presets that cover just about everything. These are user tweakable and savable. Most of the work is being performed under the hood by clever algorithms. The bypass control is conveniently engaged/disengaged by clicking on one of the two Baby Audio logos! The solo button isolates whichever node is hovered over. S.O. is extremely useful for adding or subtracting specific frequency areas, not just high ones. It's super at cleaning up mud and gluing things together. I have read somewhere about using this plugin for De-Essing; however, I have not tried it, but I might.;-).

There are five nodes on the 20/20k curve: two white, two green, and one red. The white behaves like a floating parametric E.Q., while the green at the sides provides fixed high and low shelf bands, and the red in the middle is where the sweeping global stuff happens, affecting the overall threshold control and scrolling to adjust the Q of these E.Q. nodes. All in all, this is similar to a 4-band E.Q. with two shelves and two parametric peaks. Manipulating the nodes is creative, but as mentioned by White Sea Studio, "This is not surgical." With only five nodes, three of which are moveable across the spectrum, this cannot be surgical, but that is the point. This musical plugin helps users stay in the flow, moving forward, quickly dialing in their desired sound without being overwhelmed by a zillion controls, features, and chaos. The nodes are incredibly responsive and might take a little getting used to, as audible changes can instantly range from subtle to broad. I experimented and discovered pleasant, surprising results. When used conservatively, Smooth Operator can reduce unwanted overactive goo without deadening the overall sound — it does not throw the Baby out with the dirty bathwater.

All the work is done in real-time; it does not learn and render, which helps keep things moving, enabling the user to identify and address out-of-kilter frequencies. It excels at creative sound-shaping. It uses an FFT-based algorithm that splits the audio into numerous bands for users to manipulate in a unique layout and manner. According to babyaudi.io, "The algorithm automatically eliminates harsh resonances and muddy frequency areas. .. The plugin analyzes incoming audio at the DAW's sample rate and adapts its settings tens of thousands of times per second to attenuate frequencies with excessive energy build-up."

I initially thought of this plugin as only an intelligent E.Q. that would use bands to eliminate unwanted frequencies, but soon after, I discovered its ability to compress. It works wonders on percussive loops.

Yes and No. Yes! It is cleverly and intuitively designed to provide users with a fast and fun way to remove unwanted sonic garbage and enhance all the good stuff. No, it does not use artificial intelligence or machine learning, but it does use algorithms and a unique combination of processes and design.

Any eProducers who want a tool to help them spend more time creating and less time tinkering by making adjustments but letting the tiny little engineers beneath the surface do all the heavy lifting.

Digital audio gurus who have time on their hands and live to process audio, controlling every facet.

I suggest that users approach this plugin with kid eyes and ears — having fun, playing in it and through it, letting go of obsessive control, and simply enjoying the creative musical process of improving the harmonics of tracks with the goal being to Make Your Music Sound The Best You Can.

Anywhere in the F.X. chain. Do you want to balance the raw audio or after it is processed? Both? Why not? I suggest using this in the beginning stages of production, not in place of audio repair tools, but for getting things sonically smoother before getting deeper into the madness of the mix. It's also useful at the end stages of production to crosscheck.

Organic. Seductive. Sculpting. Musical.

FAVORITE Features:

  • Looks lovely.
  • Easy to use, yet powerful.
  • It's a fantastic set of presets. A professional took time creating these. Very useful as is or as a starting point.
  • Sounds fantastic — no audible artifacts of any kind.
  • Responsive controls, especially the nodes and sliders.
  • Non-destructive.
  • Enthusiastic, responsive developer and support team.
  • Reasonable CPU when processing. Low CPU when set.
  • Priced great in comparison to competitors.

As I listed the features and functions throughout this review, I realized that Smooth Operator is a new kind of channel strip that is perfectly named. It's not an automatic fix for sonic issues but it provides lots of assistance. It's like having another set of well-trained ears sitting beside you while you dial in the sound you have in your noodle. It's educational and informative — providing a way to compress and E.Q. without worrying about parameters, which is vital to audio production, especially in the early stages. Smooth Operator is a grab-n-go tool for musicians looking to get things right quickly. It's a creative tone-shaper that is exceptionally effective at enslaving harshness and enhancing sweetness. Smooth Operator works swimmingly on individual tracks, busses, or even the stereo bus* mix. I found this little beast most useful on recordings that sounded off to my ears, but I couldn't figure out why. It's also excellent on tracks that sound great by either confirming greatness or offering a subtle suggestion to make it even greater. For the price, I could not and would not pass this up. The audio software market is overloaded with "snake oil" plugins that promise the world. Smooth Operator delivers what it promises and is fun to use. I wholeheartedly give this Baby two adult thumbs up! Excellent job, Baby Audio. Thank you.

Note: According to their website, Baby Audio offers a free trial, "Our trial versions output 5 seconds of silence every 60 seconds — until activated with a license key." I dare you to check it out.

*Sidebar Question: Buss or Bus?

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Smooth Operator
Reviewed By jamleethorpe
June 1st, 2023

Excellent sound sculpting tool. I treat it like a channel-strip that typically have both Eq and compression. The results are extremely transparent when set appropriately. Nothing like it. Oek Soothe meets Gulfoss and slays Ozone 10's Stabilizer.

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