Oxford SuprEsser: De-Esser and Dynamic EQ Plugin by Sonnox

Rather than applying a fixed EQ cut to a whole channel, SuprEsser reduces only the frequency peaks that occur. Its compressor is based on an enhanced version of the compressor section from Sonnox's Oxford Dynamics plugin. Two linear phase crossover filters, modeled on those in the Oxford EQ, limit the compressor's reaction to the band you define.

By default, the plugin compresses only that narrow band, leaving the rest of the spectrum untouched. Selecting Wide lets the compressor react to specific frequencies while compressing the full band, or combine Band and Wide to set when the compressor reacts and what it compresses. Sonnox says this keeps the low end intact when treating vocals, so the voice does not end up thin or lisp-like.

A Wet/Dry blend control is available for final balancing.

The large graphic display makes it straightforward to spot problem frequencies. It shows the threshold and peak hold levels of the user-definable band alongside an FFT view of the narrow band signal, including the frequency that holds the most energy.

To work quickly, define the frequency band, then lower the threshold fader until the gain reduction meter starts to respond. Automatic Level Tracking then adjusts the threshold as the signal level rises and falls, so the amount of gain reduction stays relative. This suits vocals where the singer is louder in the chorus than the verse. Turn the tracking off if you prefer a fixed threshold.

Press More to reach all controls in the advanced section.