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Some more updates for Polarity-SC: Output Gain Fix, Smoothing, Custom Curves & Frequency Guides. 💪Polarity Spectral Compressor has been updated with practical workflow improvements for dynamic spectral shaping across Windows, macOS, and Linux. The revised version fixes output gain behavior when using the mix control, making parallel processing and loudness matching more reliable in real-world compression and spectral balancing tasks.

New additions include spectral smoothing to reduce harsh bin-by-bin gain reduction, frequency guides for faster visual targeting, and editable curve points for custom dynamic EQ-style compression and gating. These changes make the free plugin more precise for controlling problem areas, shaping tonal balance, and experimenting with upward or downward spectral dynamics.

Key Takeaways #

The output gain behavior was fixed so gain compensation now works properly with the Mix control; users can apply gain reduction, enable Match to align input/output loudness, and then blend dry and wet signals without the dry path being incorrectly affected.

Match automatically compensates loudness by matching the output signal to the input signal, making A/B comparison and wet/dry balancing easier after compression.

A new Smoothing control reduces harshness caused by heavy gain reduction on individual spectral bins by grouping multiple bins together instead of processing each bin too sharply.

Smoothing applies to both downward and upward compression modes, helping make aggressive spectral processing sound less brittle in the high end.

The frequency display now includes visual guides at reference points such as 30 Hz, 100 Hz, and 1 kHz, making it easier to identify where processing is happening in the spectrum.

The graph now supports editable control points: clicking adds dots to draw custom spectral gain-reduction curves, allowing targeted dynamic processing in specific frequency areas, similar to a spectral EQ.

Right-click removes control points, and the custom curve can be combined with Delta mode and Slope settings for effects such as spectral gating or frequency-weighted dynamic shaping.

Current limitation: there is one shared curve for both upward and downward compression; separate custom curves for each mode are not implemented yet.

Old Post: https://www.patreon.com/posts/updated-polarity-155868423

Download: https://polarity.me/go.php?c=polarity-sc

Files

This Free Plugin Just Got Even Better

In this video I’m showing a new Polarity SC update and the latest features I added to my free spectral compressor. I fixed the dry/wet output gain behavior, added smoothing for more natural spectral compression, introduced frequency guides, and made it possible to draw custom gain-reduction curves directly in the graph. Polarity SC is still completely free and available for Windows, macOS and Linux. Give it a try and let me know what bugs or ideas you have for the next update. Download: 👉 https://polarity.me/go.php?c=polarity-sc 0:00 Intro 0:17 Fix for the dry/wet output gain problem 0:54 Match button and mix control workflow 1:22 New smoothing control 2:13 Frequency guide markers in the graph 2:36 Drawing custom gain-reduction curves 3:12 Using the curve with Delta mode 3:49 Curve behavior with upwards compression 4:23 Download page and current beta status 4:55 Future plans: tilt view and more fixes 5:30 Final thoughts and feedback request Video transcribed, summarized and Q&A on my Blog (no ads): https://polarity.me/posts/polarity-music/2026-05-01-polarity-sc-spectral-compressor-update-fixes-mix-and-adds-smoothing/ -- 💕 Support me on Patreon: https://bit.ly/3PgbxZz 💰 donate via Paypal: https://bit.ly/3cae9t8 🎧 my Music: https://polarity.bandcamp.com/ 💾 my Tools: https://polarity.me/posts/articles/2024-08-04-polarity-tools/ 💻 my Gear: https://kit.co/polarity/polarity-music-kit 👉 Discord: https://discord.gg/eWwFBww 👉 Website: https://polarity.me -- 🛒 Buy/Upgrade Bitwig Studio & Support me https://bit.ly/3yQEyDU 🛒 VST/AU Plugin Deals https://bit.ly/3zcvo66

Comments

Laury Chanty

Hello ! This is amazing ! Any chance you could add an option to have the plugin working in spectral gating AND compression in the same time ? Now it either work on compression + upward OR Expension + Gating, but I would love to have the regulation curve working as a compression treshold, and an offeted curve (or ideally second free curve) working as a gate. Indeed IMO I almost always tend to do both (Cleaning some noise with gating, and killing some resonance with the other) and it's a pitty two instance of the plugin are needed for that. What do you think about this idea ..? Thank you for this amazing work and generosity !

dAb

Many happy returns. And, thank you. 🎁

polarity_music

Yea cool idea, I note it down (its a list of feature request in my project folder) and see if it fits in. The problem is then in which order? ideally it would be customizeable which process first... and how to display