Cedar dns2000, Manual, Page: 25 / 30

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SUPPRESSING EXCESSIVE REVERBERATION
In many situations, the DNS2000 can suppress excessive reverberation. This can be useful in TV
production when you need to match the audio from a large recording studio or soundstage to
visual images set in a small room or other enclosed space. Suppressing reverberation can also
be beneficial in increasing the intelligibility of poor dialogue recordings.
The method used to suppress reverberation is quite different from that applied in the previous
examples, and is as follows:
First, set the range in which the reverberation lies.
In general, reverberant spaces include soft materials that absorb high frequencies more rapidly
than middle and lower frequencies. Even bare rooms with hard walls include these soft
materials: they are the people who are speaking.
Consequently, you will find that Low+Mid is almost always the most appropriate combination of
ranges for suppressing reverberation.
Second, set the Band Gain controls.
You should set all six Band Gain controls to -24dB. This will ensure that (if the Level is set
correctly) the DNS2000 applies maximum suppression to the tails of the sound.
Third, optimise the Level control.
Starting at its minimum position (-80dB) increase the Level control slowly. At some point before
full noise suppression becomes apparent, you will hear the tails of louder sounds become
truncated.
You can adjust the amount of truncation of the reverb using the Level control rather than the
Band Gain controls.
The final configuration might look like this: