RELIEF — Unmasking EQ & Spectrum Analyzer for Mac

RELIEF - Make space between tracks

Explore RELIEF

RELIEF analyzes multiple tracks together, shows where frequencies compete, and dynamically creates space where you need it.

RELIEF · AU & VST3 for Mac

Give every track its own space.

When two instruments share the same frequencies, the quieter one gets buried. RELIEF finds those spots across your whole mix, shows you exactly where they are, and clears them with one knob.

The RELIEF window showing kick, bass, guitar and vocal stacked in one spectrum, with the frequency range where two tracks collide highlighted. — Kick, bass, guitar and vocal in one view, seen from the bass track. The red bracket marks where the vocal covers the bass.

How it works

Add it to the tracks that competeKick and bass, vocal and guitars. Two instances are enough to start, and up to 16 can work together in one session.
See every clashEach RELIEF window shows all your tracks stacked in one spectrum. While the song plays, it marks where one track covers another and names both.
Turn ResolveThe track doing the covering steps back, only in that frequency range and only while the clash happens. The rest of its sound stays as it was.

Built on how your ears work

RELIEF decides what to cut using a model of human hearing, so it only moves what you would actually miss. Here is what runs under the hood, in plain words.

Psychoacoustics

A real masking model

The analysis is based on a psychoacoustic hearing model. It predicts when one sound hides another, and it accounts for the fact that tones and noise cover other sounds differently.

Bark scale

Bands shaped like your hearing

Your inner ear groups frequencies into critical bands: narrow in the lows, wider in the highs. RELIEF measures masking the same way, in 49 half-Bark bands from 20 Hz to 20 kHz.

Hann-windowed FFT

Clean, steady analysis

A 2048-point FFT with 75% overlap gives a stable picture of every track.

64-bit floating point

Precision where it counts

The EQ filters, resynthesis and gain stages all run in 64-bit precision, so your signal stays clean even with 16 instances running.

Latency compensation

Everything stays in time

RELIEF reports its 2048-sample delay (about 43 ms at 48 kHz), so your DAW lines everything up. Bypass keeps the same delay, which keeps A/B comparisons fair.

macOS native

Made for your Mac

Runs natively on Apple Silicon and Intel. AU and VST3 on macOS 11 or later, with a signed installer and a license that activates offline.

Also inside: a six-band EQ that suggests cuts from the same analysis, and a density control that brings punch and dynamics in line across your tracks.