Free spectral utility

Split the spectrum three ways.

Intrect HPSS is a free harmonic / percussive / residual separation plug-in for macOS (VST3, CLAP, Audio Unit). It splits every frame into harmonic, percussive, and residual components so you can mix them independently, solo what the ear misses, or reshape a sound without a source model. Free to use; the download needs an Intrect account.

Product details and community feedback on KVR Audio (opens in a new tab)

No license key Notarized installer MIT licensed DSP
The actual Intrect HPSS standalone interface with Classic mode, separation thresholds, harmonic gain, and percussive gain controls
Three separation behaviors

From transparent rebalance to hard component isolation.

Start soft, turn decisive, then expose what sits between. Every mode runs locally in the plug-in—no upload, model download, or account session.

01 / CLASSIC

Soft Wiener masks

Smooth H/P separation for natural rebalancing. The safest first move on a full mix, loop, or stem.

OUTPUTS · H + P
02 / COUPLED

Hard threshold split

Each bin chooses harmonic or percussive. Push the threshold when you need sharper isolation and decisive edits.

OUTPUTS · H | P
03 / ADVANCED

Make room for residual

Independent H/P thresholds leave uncertain energy in R—the texture, noise, tails, and in-between material.

OUTPUTS · H + P + R
Free download

Sign in once. Download from your inbox.

Use your existing Intrect account—or create one at app.intrect.io—and we’ll send a seven-day download link to that account email. There is no separate HPSS account or license key.

Build checking latest… Installer macOS Universal PKG Formats VST3 · CLAP · Audio Unit Checksum published with installer
Compatibility

Built for the macOS studio.

SystemmacOS 11 or later
ArchitectureApple Silicon + Intel
FormatsVST3 · CLAP · AUv2
Latency1536 samples · host PDC

FAQ

Is Intrect HPSS free?
Yes. There is no license key and no trial; the DSP is MIT licensed. The download is delivered to a free Intrect account.
Does it run on Windows?
Not today. The installer is a notarized macOS package (macOS 11 or later, Apple Silicon and Intel) with VST3, CLAP, and Audio Unit builds.
Why do I need an account to download a free plug-in?
The seven-day download link is sent to your account email as a private, transactional message, so the same sign-in you use for the other Intrect products gives you the installer and its published checksum. There is no separate HPSS account.