Cedar DNS3000, Manual, Page: 32 / 44

CEDAR DNS3000 dialogue noise suppressor
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RCS Tutorial
The following tutorial illustrates one way to use the unit. It may not be the way that you choose
to operate it for all jobs, but it will get you started.
Selecting a DNS3000 Processor
You can launch the Remote Control Software on your Pro Tools system, but until you tell it
which unit to use, it will do nothing. The drop-down list on the Remote Control Software displays
all the available (and, if appropriate, registered) DNS units connected to your system. If there is
a DNS serial number shown in the list, it is available for use on your system.
Choosing appropriate settings
You set up the process controls of the DNS3000 in the same way when using the RCS as you do
when using its front panel:
Range Selector
With a DNS3000 unit correctly connected and recognised by the RCS, you should identify the
frequency range or ranges in which the unwanted noise lies, and select any of six possible
processing ranges by clicking on the appropriate buttons.
With practise, you will be able to identify the range by ear. Until then, you may prefer to use the
methods described in the previous case studies.
Level Control
Your next job will be to identify the noise level of the audio. With the appropriate range
selected, pull all six Band Gain controls and the Level control down fully. Now increase the Level
slowly. At first, you will hear very little happen but, at some point determined by the noise
content of the recording, you will hear the noise disappear. You should attempt to find the point
at which this occurs.
When the Band Gain controls are fully down, maximum processing occurs as you increase the
Level control, thus making identification of the noise easier.
Band Gain Controls
Once you have chosen the range and determined the Level, you control the action of the
DNS3000’s filter bank using the Band Gain controls.
The six faders represent six frequency bands distributed from lower frequencies (left) to higher
frequencies (right) across the selected range.
You will use the Band Gain controls to control the amount of noise attenuation performed in
each band, adjusting them to suppress as much noise as possible without introducing unwanted
artefacts into the desired signal.
Noise suppression occurs in a given band when the fader is below 0dB. However, there are
occasions when you might wish to boost the signal in a given band, and you can do this by
moving the appropriate fader above 0dB.