Polarity Res Spectral Resonator Free Plugin Update Guide

Tutorial | Aug 14, 2026

Learn how to use Polarity Res, the free spectral resonator, to build resonant drums, drones and playable synth tones with MIDI, MPE and noise.

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Quick Answer

• Polarity Res is a free spectral resonator plugin/instrument for Mac, Windows, and Linux, available as CLAP, VST3, AU, and standalone, with no payment, no email signup, no telemetry, and no locked features.
• The main new feature set adds MIDI playability: mono/poly key tracking, assignable base note, attack/release, and MPE support, so the resonator can be played like a synth using its internal noise generator or an external audio source.
• New resonance creation tools include spectrum hold + learn to detect prominent frequencies from input audio, plus note-scale overlays and harmonic/subharmonic overlays that snap nodes to musical scales or overtone relationships.
• Each resonant node now supports individual per-note controls such as frequency offset, stereo offset, gain, steepness, resonance, and even per-note modulation like random smoothing for animated movement.
• Additional workflow upgrades include a random overtone generator, presets, mix/frequency/resonance/spread/tilt/stereo controls, and the ability to turn learned or drawn resonances into drones, pads, tuned percussion, or sample-driven resonator sounds.

Short Overview

Polarity Res is a free spectral resonator plugin for macOS, Windows, and Linux, available in CLAP, VST3, AU, and standalone formats. It turns spectral peaks into playable resonances, making it useful for extracting tonal material from drums, building tuned drones, and shaping harmonic textures from either external audio or its internal noise source.

Recent updates add MIDI and MPE control, polyphonic and monophonic key tracking, per-note parameter editing, harmonic and scale-based note overlays, and a random overtone generator. In practice, this makes Polarity Res work as both an audio effect and a resonator-based instrument for sound design, microtonal experiments, pads, and playable synthetic percussion.

Key Takeaways

• Free, cross-platform release with no signup or telemetry: available for macOS, Windows, and Linux in CLAP, VST3, AU, and standalone formats, with no payment, email requirement, or usage tracking.
• Spectrum hold + learn captures resonant peaks from audio: the plug-in can freeze the spectrum and detect prominent frequencies from a source such as a drum loop, turning those peaks into a resonator node layout.
• Global resonator shaping includes mix, frequency, resonance, spread, tilt, and stereo offset: all nodes can be adjusted together, including tilt to emphasize higher frequencies and stereo to offset each note differently between left and right channels.
• Internal noise source turns the resonator into a drone/pad generator: the built-in noise generator can excite the resonances directly, allowing custom overtone structures without external audio input.
• Node editing supports musical and harmonic snapping: left-click adds nodes, right-click removes nodes, and overlays can snap nodes to scales (for example root-only, root+fifth, root+fourth+fifth) or to harmonic / subharmonic series.
• Harmonic mode links overtone movement to the fundamental: when harmonic snapping is enabled, moving the lowest note shifts the related overtones with it; sub mode instead derives lower partials by dividing from the topmost frequency.
• MIDI mode adds mono, poly, key tracking, and MPE control: resonances can be mapped to a base note like C3/C4, played from a keyboard with monophonic or polyphonic note input, and shaped with attack/release for ring-out; MPE can modulate notes independently for pitch movement and microtonal experiments.
• Per-note controls and random modulation add motion, but copying settings is missing: each note can have its own frequency offset, stereo, gain, steepness, and resonance, plus random smoothing modulation, but there is no built-in way to copy settings from one note to another yet.

Polarity Res update: free spectral resonator with MIDI, scales, harmonics, and per-note control

Polarity Res is a free spectral resonator plugin that now goes well beyond simple resonant filtering. It works on macOS, Windows, and Linux and is available as CLAP, VST3, AU, and standalone. There is no payment, no email requirement, no locked features, and no telemetry.

At its core, Polarity Res analyzes or defines sets of resonant frequencies and uses them to reshape incoming audio or synthesize sound from its internal noise source. With the latest additions, it can function both as an audio effect and as a playable instrument.

What It Does

Polarity Res lets users build a bank of resonant peaks, referred to here as nodes, across the frequency spectrum. These nodes emphasize selected frequencies and can be derived from source material or placed manually.

A typical use starts with an audio input such as a drum loop. The plugin can hold the spectrum and learn prominent frequencies from the input, identifying peaks such as kick and snare resonances. Those learned peaks become the basis of a resonator structure that can then be mixed with the original signal.

Core global controls include:

• Mix: blends processed and dry signal
• Frequency: shifts all nodes together
• Resonance: changes how sharply each frequency is emphasized
• Spread: adjusts spacing between nodes
• Tilt: boosts or attenuates higher frequencies relative to the fundamental
• Stereo: offsets note frequencies differently between left and right channels

These controls shape the overall spectral character of the resonator.

How It Works

Polarity Res can be used in two main ways:

1. Resonating external audio
2. Generating sound internally from noise

When external audio is used, the plugin imposes the defined resonance structure onto the incoming signal. When the internal noise generator is enabled, the resonator becomes a sound source in its own right, similar to a synth voice built from filtered noise.

This makes it possible to create:

• resonant processing for loops and samples
• drones
• pads
• synthetic struck or noisy tones
• custom overtone structures

A user can manually add nodes by clicking in the spectrum display and remove them with right-click. This allows precise control over the resonant frequencies rather than relying only on analysis.

Musical overlays: scales and harmonics

A major improvement is the addition of overlay modes that help place nodes musically.

Scale overlay

The note overlay snaps node placement to a musical scale. For example, a scale such as C-sharp minor can be selected, and node placement can be constrained in several ways:

• all notes in the scale
• root only
• root and fifth
• root, fourth, and fifth
• other limited subsets

This is useful when building resonances that should produce more conventionally musical intervals and tonal relationships.

Harmonic overlay

The harmonics overlay aligns nodes to integer multiples of the lowest frequency. In other words, it places resonances at harmonic positions relative to the fundamental, the lowest note in the set.

With harmonic mode enabled:

• snapping follows harmonic ratios automatically
• moving the fundamental also moves the overtone structure with it

That second behavior is significant: the overtone relationships remain locked when the lowest note is moved. When harmonic mode is disabled, nodes move independently.

Subharmonic overlay

There is also a sub mode, which works in the opposite direction. Instead of using higher integer multiples of a low fundamental, it uses divisions of the highest frequency:

• 1/2
• 1/3
• 1/4
• and so on

This makes it possible to construct subharmonic structures, which can be useful for unusual tonalities and experimental resonances.

MIDI and keyboard control

Polarity Res now includes a dedicated MIDI tab, which turns the resonator into a playable instrument.

A chosen resonance structure can be assigned to a reference key such as C3 or C4. From there, MIDI note input transposes the structure across the keyboard.

Available modes include:

• No key tracking
• Monophonic key tracking
• Polyphonic note input

In monophonic mode, the default resonance stays visible and played notes appear as ghosted transpositions. In polyphonic mode, the default voice is removed and sound is only produced when notes are played.

This works with either:

• the internal noise generator, or
• an external audio source such as a drum loop

Envelope-style controls

The MIDI section also adds:

• Attack
• Release

These control how the internally generated sound starts and fades. Increasing release creates more ring-out after a note is released, making the plugin behave more like a synthesizer with sustained decay rather than an immediately gated resonator.

MPE support and microtonal movement

Polarity Res also supports MPE (MIDI Polyphonic Expression). MPE allows expressive per-note control, such as pitch movement affecting only one note of a chord while other notes stay fixed.

In practice, this enables:

• individual note pitch bends within a chord
• expressive spectral movement
• experimentation with microtonality

For a resonator-based instrument, this is especially useful because each note can carry its own overtone structure while still responding independently.

Per-note parameter control

Another important addition is individual note settings. Previously, many controls applied globally to all nodes. Now each note can have its own values for parameters such as:

• frequency offset
• stereo offset
• gain
• steepness
• resonance

This makes it possible to build much more complex and animated spectra, where some resonances behave differently from others.

Each note can also receive its own modulation. One example shown is random smoothing in Hertz, used to modulate parameters such as gain amount over time. This introduces subtle or unstable movement into specific resonances rather than the entire structure.

At present, there is no stated feature for copying all settings from one note to another, so per-note adjustments must be entered individually.

Random generator and presets

Polarity Res now includes a generator for creating random resonance setups. This is useful for quick exploration, especially when paired with MIDI input and the internal noise source. Randomized overtone structures can quickly produce strange, percussive, or drone-like timbres.

There are also presets, including examples based on the prominent frequencies of recorded sources such as a rim shot. These presets represent stored overtone or resonance profiles rather than exact recreations of the original sound. The result depends heavily on the excitation source used, such as pink noise or other external material.

Workflow

A practical workflow can look like this:

1. Load Polarity Res as an effect or instrument.
2. Feed it a source such as a drum loop, or enable the internal noise generator.
3. Use Learn to detect prominent frequencies, or place nodes manually.
4. Refine the spectrum using frequency, spread, tilt, resonance, and stereo controls.
5. Switch on a scale, harmonic, or subharmonic overlay if a more structured result is needed.
6. Assign a reference note in the MIDI tab.
7. Play the structure monophonically, polyphonically, or with MPE.
8. Add per-note offsets or modulation for motion and complexity.

This supports both sound design and musical performance.

Practical uses

Polarity Res is especially suited to:

• extracting resonant profiles from recorded material
• turning noise into tonal drones and pads
• building harmonic or subharmonic textures
• creating playable resonator instruments
• spectral experimentation with MIDI and MPE
• imposing custom overtone structures on samples or loops

Because it supports both internal excitation and external input, it can move between effect processing and synthesis without changing tools.

Limits

A few practical constraints are worth noting:

• Some features still require manual setup, especially per-note programming.
• Presets based on analyzed sounds do not automatically reproduce the exact source timbre; the excitation signal matters.
• Bugs are expected, and troubleshooting depends on detailed system and reproduction information.

Summary

Polarity Res has developed from a free spectral resonator into a hybrid tool that covers resonant processing, overtone design, MIDI performance, and noise-based synthesis. New scale and harmonic overlays make it easier to build musically coherent structures, while MIDI, polyphony, MPE, and per-note control push it into instrument territory.

For users interested in spectral shaping, drones, resonant synthesis, or experimental harmony, it now offers a much deeper workflow without adding payment barriers or account requirements.

Transcript

This is the transcript of the video. The text was generated automatically and may contain small mistakes. The timestamps jump to the matching part of the video.

[00:00:00] Yo, welcome back. I want to give you an update on my plug-in called polarity res which is my spectral resonator and
[00:00:07] I made a video about this a few months ago, but I had some new features. I want to show you so there's some new stuff
[00:00:14] Right, it's still completely free. You don't need to pay anything. I don't want you email address
[00:00:19] There's no in telemetry or anything like this. No. I lock nothing. Okay. It works on all systems
[00:00:26] Mac windows and linux and it's available in all kinds of formats. So a clap VST 3
[00:00:32] AU and standalone. There's a download down here and some install instructions
[00:00:40] Okay, so the link to this website is in the description below
[00:00:43] So I want to show you what's new in polarity res, right? So here that's the plug-in window when you open it
[00:00:50] I'm using here the clap version and let's say you have this drum loop here, right?
[00:00:57] So what you can do now is you can hold the spectrum
[00:01:00] So we have this frequency curve here and then we can learn and it tries to figure out here all the prominent frequencies
[00:01:09] so we have the kick drum here, of course, we have the snare drum and
[00:01:12] Yeah, this is how it looks like. This is our kind of resonator now
[00:01:25] We can also match here the input to the output signal. So when we hit play
[00:01:29] And then we can use the mix button
[00:01:38] It can also change the frequency for all of the nodes
[00:01:44] Change the resonance or we can change the spread
[00:01:55] or
[00:01:57] We can change the tilt
[00:02:03] So all the upper frequencies are have or get more gain than the fundamental
[00:02:11] Then we have stereo which means each note gets a different frequency on the left and the right channel
[00:02:25] Yeah
[00:02:27] Yeah, so these are basically the basic controls. We also have here a noise generator. It's just it just plays a noise sound
[00:02:42] You can
[00:02:48] So we can basically use this as a
[00:02:51] Drone generator you can create of course your own overtones here
[00:02:57] But we just copied this from the drum loop. So maybe we just clear this here. We create our own
[00:03:02] Maybe put the spread here on zero back and steepness frequency
[00:03:19] Okay, so yeah, that's not all we can also instead of just
[00:03:23] Left-clicking here and creating new notes. We can also right-click and remove these notes
[00:03:28] We can also use an overlay like a note overlay and say yeah, we want to
[00:03:33] Create something in the sharp minor for whatever reason and we have here the full scale
[00:03:39] Which means all nodes, but we can also say we only want to have the root nodes of the scale or the root and the fifth and the root
[00:03:45] The fourth and the fifth and so on right and then we can create here
[00:03:49] Much better musical outcome. So we can use the noise again there. We can snap
[00:03:54] Something like that
[00:04:09] Yeah, we can create
[00:04:16] Kind of drones or pad sounds with that. So this was the idea
[00:04:20] If you don't want to use notes, we can also use here the harmonics overlay looks like this and it's all
[00:04:27] Always aligned with the fundamental with the lowest
[00:04:31] note here, right and
[00:04:34] You can see here all these lines are multiples of the fundamental frequency, right?
[00:04:40] So this is the first harmonic second harmonic or third harmonic and
[00:04:44] Then it also snaps your to all these
[00:04:46] lines automatically, so you create easily
[00:04:50] single sounds with different harmonics and
[00:04:54] Also the specialty of this mode when this is here enabled when you move the lowest fundamental or the overtones or move with it
[00:05:04] Right, which is not the case when this is off
[00:05:14] Software like that. So this is important. There's also a different
[00:05:18] mode here sub mode, which is just the opposite way. It takes the
[00:05:22] uppest up
[00:05:25] the top most
[00:05:27] fundamental here and then
[00:05:29] Kind of halves or always the frequency red
[00:05:33] So this is the frequency and then is half the frequency a third of this frequency a fourth of this frequency and so on right
[00:05:40] So you can create sub harmonics
[00:05:43] It's also snapping here with this if you want to do that
[00:05:46] Also important to know if you create let's say a sound like that
[00:06:02] Some overtones here
[00:06:07] So this frequency is somewhere right it's it's
[00:06:13] No specific frequency, but when you want to play this on the MIDI keyboard, which you can do
[00:06:18] You gave you go basically here to this MIDI tab
[00:06:22] You can say I want to send up this on C4, right? So this is now on C4
[00:06:27] or C3
[00:06:29] what to do that and
[00:06:31] With that we can enable here the
[00:06:34] Yeah, MIDI input MIDI keyboard input and we can also enable here the key tracking to mono
[00:06:42] Right and we can change the frequency
[00:06:44] the main or the
[00:06:46] Default frequencies here are stay in place, but you can see these ghost notes here appearing
[00:06:52] This is basically what you play on the keyboard. So we dial in here the noise
[00:06:56] Right and then we can also switch it to polyphonic which
[00:07:07] Removes the default voice and it's quiet now because we haven't pressed the note yet. So we can press a note and
[00:07:13] press multiple notes
[00:07:16] And if you don't want to use the internal noise generator you can also use samples so here
[00:07:30] I'm just using the drum loop again and then we play some notes
[00:07:37] And
[00:07:39] We also have here on the MIDI tab we have attack and release which means we can
[00:07:50] kind of influence how the
[00:07:53] Yeah, release time or attack time is so
[00:07:55] Let's stop this here and go back to the noise
[00:07:58] And then we can say when we release the note
[00:08:02] It has more
[00:08:05] Ring-out time so it's not immediately here
[00:08:08] So you can almost use this like a synthesizer where you can define the overtones
[00:08:32] So it's pretty interesting and nice to experiment with in my opinion
[00:08:36] Then there's of course here MPE. So you can also use MPE for that
[00:08:42] Maybe I just create here
[00:08:45] Can I do this?
[00:08:48] Some notes because I can show you this here outside you can use an MPE keyboard if you want to
[00:08:54] Let's use a note here
[00:09:01] And then we use
[00:09:03] Maybe make this a bit longer
[00:09:14] Something like that
[00:09:22] But more drastic
[00:09:32] You can see only one note is going down to the other note stays on the frequency
[00:09:37] So yeah MPE also works with that and you can experiment with resonances in
[00:09:49] Microtronality if you want to do that. So this is here the new MIDI tab
[00:09:56] Maybe there's more coming to this step, but for now that's it. Then we have some people want to have individual
[00:10:03] Settings for individual notes, right? So here we can change
[00:10:09] Of course the tilt
[00:10:12] Like that
[00:10:16] You can also change the stereo, but it's always for all the notes
[00:10:21] So here we can just say I want to change this note and you can see single note to offset, right?
[00:10:28] So we can say we want to have a different frequency here for that and so on
[00:10:32] We also have here a stereo for each note gain
[00:10:47] Steepness resonance for each note. So everything is specific. You can also say I want to have this note
[00:10:54] And I want to modulate this here with the random smoothing Hertz
[00:10:58] And I want to change the not the frequency I want to change the gain amount something like that
[00:11:14] I'm going to go to this note here also Hertz
[00:11:17] Maybe I need to be something where you can copy all the settings from one note to the other
[00:11:24] But yeah, it's not in there yet. Yes, you have to dial it in every time
[00:11:28] So with this you get a bit of movement in different frequencies and you can experiment with that also interesting
[00:11:41] Then I also added here a generator
[00:11:44] If you want to use that you can just generate here random
[00:11:50] Resonances
[00:11:54] Nice put this on C4 or it's already on C4 C3
[00:12:14] I think this is almost not an audio FX anymore
[00:12:17] It's more like a synthesizer, but you can use it in in both directions
[00:12:21] We can say oh, I want to create a sound with overtones
[00:12:24] Or I want to put this on a sound and just you know instead of using the internal noise source
[00:12:31] I want to use my own samples from the outside you can do that
[00:12:34] There are also now presets here
[00:12:40] So this is rim shot, can I actually play this I have to probably use an internal noise here
[00:12:48] MIDI
[00:12:53] Yeah, these are just the overtones of an
[00:13:05] Of a rim shot you probably need to have some
[00:13:11] Specific
[00:13:13] Noise input here, let's use a test tone
[00:13:16] Let's use pink noise maybe
[00:13:20] and
[00:13:22] Put this on
[00:13:24] onophonic or off
[00:13:26] Then we can use it as external noise source use an LFO
[00:13:32] And
[00:13:37] Steep
[00:13:41] I
[00:13:43] Feel like that
[00:13:47] I can almost create an
[00:14:11] I
[00:14:13] Doesn't sound like a
[00:14:17] Rimshot at all, but I just copied or cloned or saved the preset from a rim shot here with all the prominent frequencies
[00:14:24] You get in the same direction you get what I mean
[00:14:27] So yeah, these are basically all the new features we have individual note settings here
[00:14:34] We have a generator in there for generating random overtones
[00:14:38] We have this MIDI tab now where we can use polyphonic
[00:14:42] Note inputs monophonic note inputs on no key tracking at all
[00:14:46] We can change here the ring out or attack time when we use the internal noise generator
[00:14:52] So there's a lot of stuff in there. I would say that you can try and use and
[00:14:57] It's now also an instrument because you just need to have an external noise source anymore
[00:15:04] You can just use the internal noise generator and then play it on the keyboard
[00:15:08] Polyphonically or with the with the MBE keyboard and you have some fun with it, right?
[00:15:14] So again, that's polarity res as always completely free
[00:15:20] And head over to the website. Let me know what you think. There are probably some bucks
[00:15:26] Probably 100%
[00:15:30] But yeah, I'm trying to fix it if you give me exactly what kind of system you use
[00:15:36] Where the problems are I can fix it. Okay. Thanks for watching and have a good weekend