AUDIOSUITE

ESSPLIT

The best de-esser is you. ESSPLIT only does the prep.

AAX AudioSuite · macOS

One installer for everyone. A licence unlocks it permanently, on up to three computers.

ESSPLIT plugin interface

In my years of mixing I have chosen and used a lot of de-essers. What I have come to believe is that setting the level by hand, one sound at a time, still gives the best result. "Hmm, this one is over-processed" — "that ess is still harsh" — while you sit there nudging a threshold, you could have ridden clip gain through the whole take and been done. And this way of working will never go out of date: whatever comes along next, nothing will sound more like what you intended. The catch is that editing a waveform that finely takes a bit of work. So I built something to help with that part — so that the work comes out better.

ESSPLIT is an AudioSuite plug-in for Pro Tools. It detects esses and breaths in a vocal or dialogue selection and cuts the original clip at exactly those points. Each one becomes a clip of its own, ready for you to set its level.

Nothing is rendered and nothing is replaced. The split is an ordinary, non-destructive clip separation: the same audio, the same track, just cut where a careful editor would have cut it. What used to be an hour of zooming and slicing is one button.

There is a word we engineers are fond of: reversible. Select what ESSPLIT cut and press ⌘H — Heal Separation — and it is one clip again. No new audio files are created.

A de-esser decides for you, the same way for every syllable. Clip gain doesn't: this ess down 3 dB, that one untouched, this breath halved, that one gone. ESSPLIT doesn't touch the sound at all. It does the finding, and leaves the judgement where it belongs.

Capture, then split

Select a vocal or dialogue range and press CAPTURE: a trained detector finds the esses and breaths in it, in place. ESS and BREATH set how readily a sound counts, EXTEND grows or shrinks every region at both ends, and SOLO lets you hear only one kind. Press SPLIT and the original clip is cut at every region.

Tell it when it's wrong

Every voice is different. Drag a range on the waveform and label it ESS, BREATH or NEITHER. Your manual labels stay in place. Press LEARN to update the detection of similar sounds elsewhere in the selection: it follows your examples rather than moving a threshold. AMOUNT sets how strongly the new lesson applies.

Same track, or three

SAME TRACK cuts in place. 3 TRACKS moves the ess and breath clips to their own tracks next to the source — "<track> ESS" and "<track> BREATH" — and leaves the voice where it was. New clips are named ESS 01, BREATH 01, and so on.

Features

  • Non-destructive: an ordinary Pro Tools clip separation, nothing rendered
  • Separate ESS and BREATH sensitivity, EXTEND in milliseconds, SOLO per kind
  • Add regions by hand, then use LEARN to detect similar sounds throughout the take
  • Learned examples are stored in the preset — the same voice starts closer next time
  • SAME TRACK or 3 TRACKS, with clips named and numbered
  • Optional Render: VOICE / ESS / BREATH stems that add up to the original, sample for sample
  • Resizable window — the waveform grows, the controls stay put

In detail

Before you start

  • Requires Pro Tools 2025.06 or later, with Pro Tools Scripting enabled (on by default).
  • Keep Link Timeline and Edit Selection turned on, or SPLIT may stop.
Overview

How to use

Select a vocal range in Pro Tools and open ESSPLIT from the AudioSuite menu.
Press CAPTURE.
Set the ESS and BREATH sensitivities and EXTEND.
Mark by hand anything the detector missed. LEARN carries that lesson to sounds of the same kind.
Choose SAME TRACK or 3 TRACKS and press SPLIT.
Finish it with clip gain.

Pro Tools COLOR TIPS — back to one track, colour-coded

Split to three tracks. Choose 3 TRACKS and press SPLIT. The voice stays on the original track; every ess and every breath becomes its own clip on the "<track> ESS" and "<track> BREATH" tracks below it.
Colour the clips with the Color Palette. Open Window > Color Palette and set it to "Clips in Tracks". Give the clips on the ESS track one colour and the clips on the BREATH track another.
Select every ESS clip. Select all the clips on the ESS track, then switch to the Object Grabber tool.
Double-click the Object Grabber and copy. Every ESS clip is now selected as an object. Press Cmd+C.
Switch to the Selector tool. Leave the selection as it is.
Press P to move up one track. The selection moves to the original vocal track.
Paste. Press Cmd+V and the clips drop exactly into the gaps SPLIT left behind. Repeat for the BREATH track. The order matters, so once more: double-click, copy, Selector tool, P, paste.
One track, colour-coded. Voice, ess and breath now sit on a single track in their own colours. All that is left is to set each clip's gain by hand.

Version history

v1.0.3
  • Fixes the LICENSE and CLOSE buttons in the settings drawer being covered by the audio output section when a multichannel output device is selected. Nothing else changed.
Older versions (3)
v1.0.2
  • Fixes SPLIT failing on Pro Tools 2025.10 with "PT_UnknownError / play start marker time" — the tracks were created but no clip was cut. Pro Tools 26.x was not affected. Nothing else changed.
v1.0.1
  • Universal build: Intel Macs are supported too, including Pro Tools running under Rosetta. Nothing else changed.
v1.0.0
  • First release: finds every ess and breath in an AudioSuite selection and cuts the original clip at those points, in place or onto ESS / BREATH tracks. 30-day trial, one-time licence.
Format
AAX AudioSuite
Host
Pro Tools 2025.06 or later
OS
macOS 12 or later
CPU
Apple silicon or Intel (universal)
Requires
Pro Tools Scripting Library enabled (the default)

One installer for everyone. A licence unlocks it permanently, on up to three computers.

Pro Tools and AudioSuite are trademarks of Avid Technology, Inc. ESSPLIT is an independent product of reminitone and is not affiliated with, authorised or endorsed by Avid.