DeVerberate

Ultimate Edition Only

This feature is available in the Ultimate Edition only.

About DeVerberate

DeVerberate 3 allows independent manipulation of the direct and the reverberated signal levels in existing audio recordings. An AI engine is used to separate the direct and the reflected signals independent of the number of audio channels recorded. The output levels of these two signal components can then be independently adjusted so that you can attenuate or emphasize the reverberated signal.

The DeVerberate plug-in interface is shown above. The graph shows the estimated spectrum of the reverberation as well as frequency spectrum of the input and output signal.

The de-reverberation process can be monitored visually using the spectrum display showing the input and output spectra as well as the spectrum of the estimated reverberation signal (the reverb profile).

Reverb Estimation

The Reverb Estimation section of the interface has two modes: Voice and Other.

Voice mode

• Sensitivity (%)

This knob controls the sensitivity of the AI reverb detection. In the middle, the 0 setting is the default sensitivity. Turning the knob left will reduce sensitivity, and turning the knob right will increase sensitivity.

Other mode

When using the Other mode, it is advisable to reduce the output reverb level to the minimum (-48 dB) and set the output dry level to 0 dB (both settings found below the spectrum analyzer) while adjusting the source reverb settings, so that you can listen how the settings affects the signal.

• Reverb time (in seconds)

The reverb input time should be set to an estimate of the reverberation decay time in the input signal. The visual representation of the reverb profile can be very useful monitor that the reverberation time matches the input signal. This works particularly well if there are fragments in the recording containing only the reverberation decay. The reverb profile should then decay with the same rate as the input signal.

• Input reverb level (in dB)

The input reverb level should correspond to the level of reverberation present in the input signal. It is advisable to start with a low level and increase the level until you reach the desired reduction.

Early reflections settings

DeVerberate can estimate and reduce the effect of early reflections. The early reflections are the first reflections to arrive before the exponentially decaying reverb tail arrive.

Learn button

To reduce early reflections, first click the Learn button to enable the estimation of the early reflections. Next, play your audio using the play button in the bottom right corner of DeVerberate. You will need to play several seconds of audio for the estimation to stabilize.

After a few seconds you can stop playback with the stop button in the bottom right corner of the interface. Now click the Learn button again to toggle it off. The early reflections have now been estimated by the plugin.

Modifying the early reflection reduction

Click the Eye button to display the early reflection controls in the spectrum analyzer.

Shown in the above image, the left and right vertical bars control the processed frequency band. The horizontal line controls the amount of processing.

Click the Power button to toggle early reflection processing on and off.

Output Settings

• Dry level (dB)

The amount of the estimated dry signal to send to the output. You can use the toggle button left of the knob to exclude the estimated dry signal completely.

• Reverb level (dB)

The amount of the estimated reverberation signal to send to the output. You can use the toggle button left of the knob to exclude the estimated reverberation completely.

• Spectral smoothing

Spectral smoothing is a tool that can be used to mask artifacts after reducing the reverberation tail. In most cases, this should be set to zero, but if short fragments of tonal noise are still present after reverb reduction, you can try to increase the level of spectral smoothing.

• Difference Monitoring

The difference monitoring makes it possible to listen to the signal being removed. When this option is activated, DeVerberate outputs the difference between the incoming and the processed signals.

Click Difference to hear only the signal that is being removed by DeVerberate

• Emphasis Filter

The emphasis filter allows you to apply frequency weighting to the reverb profile. This is very useful if you wish to make manual corrections to the estimated reverb profile. The frequency weighting curve consists of a low shelf filter, two peak filters and a high shelf filter, similar to a parametric equalizer.

You can modify the filter characteristics by clicking the handles (colored bullets) in the curve and move them around. Press Ctrl key on your keyboard to see the current frequency and gain settings of the selected frequency band. You can also change the filter slope of the shelving filters or the bandwidth of the peak filters. Click handle of for the filter you wish to modify. Arrows appear surrounding the handle. Move these to change the bandwidth for peak filters or the filter slope for the shelving filters.