The Oxford SuprEsser DS AAX DSP Plug-in from Sonnox is a professional De-Esser plug-in for use with Avid S3L live consoles and Pro Tools|HDX. With its low latency of sub 2 ms, SuprEsser DS is suitable for live applications or live tracking in Pro Tools.
The plug-in is designed for the treatment of sibilance and fricatives in vocals, and the treatment of unwanted whistles and 'spirant' artefacts associated with wind instruments. For the most natural sounding results, the SuprEsser de-esses only the frequency band you set.
Detailed visual feedback is provided thanks to the intuitive graphical display, allowing quick identification of the frequencies that need treatment and where to set the threshold. The threshold level and peak hold levels of the user-definable band are shown on the graph, alongside the FFT display of the narrow band signal, which includes retention of the peak level and the frequency containing the most energy.
At the heart of the Oxford SuprEsser DS is an enhanced version of the compressor section of the Oxford Dynamics plug-in, which is popular amongst professional users for delivering precise and transparent control of peaks. Around this is built a pair of cross-over filters, modeled on the Oxford EQ, to make the compressor react only to the defined frequency band.
Three listen modes allow the user to listen to the mix, the output of the band-pass filter ('Inside') or the output of the band-reject filter ('Outside'). Once the frequency band has been defined, simply lower the threshold fader until the gain reduction meter starts to kick in. The plug-in then automatically tracks the general signal level and the threshold follows accordingly so that it gives the same relative amount of gain reduction as the signal level rises or falls. This is suitable for vocals where, for example, a vocalist is louder in the chorus than the verse, but you want to apply the same relative amount of de-essing, and not over de-ess in the chorus. This Auto Level Tracking mode can also be switched off for a fixed threshold.
In its default mode of operation, the Oxford SuprEsser DS feeds the defined 'Band' signal to the compressor to affect only this narrow band signal. The result is that the compressor reacts only to specific frequency components when they reach a specific threshold, and applies compression only to these specific frequency components, leaving the rest of the spectrum untouched. 'Wide' can also be selected to allow wide-band compression reacting to only specific frequencies or any combination of Band and Wide defining 'when the compressor reacts' and 'what it compresses' (narrow or wide-band).
The Oxford SuprEsser DS comes complete with many presets to act as good starting points, alternatively the advanced section gives full access to all controls for precise correction, or even creative use.