Eiosis e2deesser: Sibilance Processor by Slate Digital

The e2deesser detects sibilant frequencies on its own and turns them down in the mix, so you do not need to hunt for the problem band manually. Slate Digital positions this as the core of the plugin: powerful frequency analysis wrapped in a simple interface.

The two-knob control layout keeps the number of decisions small. Slate Digital says natural-sounding deessing is achievable in seconds, which makes the plugin a practical choice when you need quick results on a vocal or a drum bus.

The interface includes a real-time display that helps you see what the plugin is doing. The upper display shows a spectral analysis of the detected sibilants. The lower display shows how the audio is being processed.

Watching both displays together makes it easier to confirm that the reduction is targeting the sibilant range and not the rest of the signal.

Custom presets cover vocals, percussion and drum overheads, among other sources. Using the plugin on non-vocal material is a practical use case, since sibilant-style harshness can appear in cymbals and other high-frequency sources.

The presets give you a starting point for each source type, which you can then adjust with the two main controls.