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ERA 5 De-Esser is covered by at least the following patents:
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Thank you for choosing accusonus ERA 5 De-Esser. In order to better understand the main concepts and operation of De-Esser, please take the time to read this user manual.
De-Esser is a one-knob audio effect plug-in that offers precision-grade de-essing and automatic audio repair functionality without compromising audio quality. Based on the multi-patented accusonus algorithms, De-Esser simply works and allows for efficient sibilance removal from audio recordings.
Single knob operation
Simple and streamlined user interface
Automatic sibilance reduction
Real-Time Processing Display
Listen to the "ess" button
Precision-grade audio repair functionality
Uncompromised sound quality
Minimal CPU usage
- Info button with tips & tricks
Installation & Activation
You can find the latest De-Esser installer in the Downloads section. For more information about the installation and activation procedure, see the Activation Manual, which you can find along with the installer or in the Accusonus Help Center.
Your computer must have:
a modern architecture CPU
a minimum of 2GB RAM memory
at least 50MB free space on your hard disk
a minimum screen resolution of 800x600 pixels
De-Esser is available as a mono or stereo audio effect plug-in in the following formats:
AAX Native (64-bit)
for macOS 10.12 or later
AAX Native (64-bit)
for Windows 10
Supported sample rates
De-Esser supports the following sample rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz.
Supported plug-in hosts
Please have a look at the Compatible Audio and Video Editors with ERA plugins article to check the compatibility of De-Esser with your video/audio editor.
Warning: De-Esser is designed to be used as an audio effect plug-in inside Digital Audio Workstations or Non-Linear Editing systems. Only the plug-in formats listed above are supported. ERA De-Esser does not operate as a stand-alone application.
Warning: There are just too many combinations of DAWs and plug-in formats out there, so there’s always something we might have not tested. If you don’t see your DAW above, you can always download the free, fully-functional 14-day trial and see if De-Esser is supported for yourself. If you encounter any problem, contact us and we would be happy to help.
ERA 5 De-Esser Operation
This is the main control of De-Esser. Most of the time you don’t have to do anything else. Just dial in the amount of processing you want and you’re done! The knob values from a range of 0% to 100% and controls the amount of processing applied to the audio signal.
Tip: You can double-click on the control to reset it to its default value.
Under the processing knob, you’ll find the Processing Mode selector. You can toggle between the two available modes to fine-tune the processing, depending on your case. Each mode focuses the sibilance detection and reduction on a specific part of the signal’s frequency spectrum. The two available processing modes are:
Tip: In most cases, the Normal mode is fine as it smoothly handles common voice sibilant cases. Use the Broad mode, if you’re dealing with harsh sibilants such as heavy sounding “ch” or “sh”.
Example: We are all familiar with the harsh “ess” sounds singers or speakers can produce during voice recordings. These sounds are concentrated in the higher frequencies, but the range could differ depending on the source. Use the De-Esser mode to focus the processing only on the problematic frequencies. Broad mode will apply processing on a wider frequency range, while Normal mode, will apply processing on a narrower part of the spectrum.
Due to the nature of sibilance reduction, the level of the output signal can be lower than the level of the original signal. The output gain works as a make-up gain and allows you to adjust the level of the output signal. Note that this gain is also bypassed when the ON/OFF switch is set at OFF. This is very helpful when comparing the original and the processed signals.
Tip: You can double-click on a control to reset it to its default value.
Real-time Processing Display
At the bottom of the plug-in window, there is a real-time processing display. De-Esser will show you where the sibilance exists (with light green) on the incoming signal’s waveform (with black). The more processing you apply on the signal, the more sibilance regions will be detected, hence more sibilance regions will be shown on the waveform.
Listen to the "ess" button
On the right side, under the Output meter, you can find the DIFF button. Enable it to listen to the "ess" that De-Esser is removing during processing. In other words, you’ll hear the difference between the input and the output signals.
Tip: Enable the DIFF button and adjust the main processing knob, until you listen to a bit of the voice being removed along with the unwanted "ess". Turn the knob back a little bit, choose the desired processing mode and there you are! This way, the signal will stay as natural as possible.
There might come a time where you’re not sure which setting is better. Note, that you can adjust the plug-in controls (Processing, Output Gain and Mode) independently for the A and the B setting. You can use the A/B switch to quickly compare two settings and decide which one is better.
The ON/OFF switch allows you to turn on or off the plug-in processing. When the switch is at the OFF position, all processing is bypassed and the original signal comes through De-Esser untouched.
Tip: We suggest to use the ON/OFF switch (instead of the DAW’s bypass control for the plug-in). This will keep your audio in sync with the rest of your tracks in your DAW session.
Resizing the plug-in window
De-Esser offers the option to resize the plug-in window. This can be especially helpful if you have large or high-resolution screens or you just want to focus on a specific task. Click the zoom icon at the top right corner and choose between three settings.
Warning: Low resolution screens such as 800x600 cannot correctly display the plug-in for zoom options above 100%. Additionally, some hosts may clip the plug-in window in such low resolutions.
Quick Info Button
Right above the main processing knob, you will find the Quick Info button. Enable it and hover the mouse over any control of De-Esser. A pop-up window will appear in the middle of the plug-in, containing helpful information and tips for each control.
Info: To hide the pop-up window, just click on the Quick Info button once again.