User Manual

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Plug-in processor reference
Ö When you process audio in DeNoiser, the plug-in will
need a short time (less than a second) to analyze the ma-
terial and set its internal parameters.
Since you would not want to include this short “startup sequence” in the
final result, you should make it a habit to first play back a short section of
the audio, thereby letting DeNoiser “learn” the noisefloor, and then stop
and start over again from the beginning. The plug-in then remembers the
settings internally.
The Noisefloor Display
The display to the left in the DeNoiser window is crucial
when making settings. It contains the following three ele-
ments:
• The dark green spectral graph.
This shows the spectrum of the audio currently being played back. The
horizontal axis shows the frequency (linear scale). The low frequencies
are visible on the left side, the high ones on the right side. The vertical
axis shows the signal amplitudes, thus the level (displayed as a logarith-
mic dB scale).
• The yellow line.
This is a spectral estimation of the noise floor. The average of this value is
shown numerically below the display.
• The light green line.
This is simply a graphic representation of the Offset parameter.
The light green Offset line should be adjusted so that it
appears as close above the yellow noise floor graph as
possible. The dark green spectrum plot is there to help
you fine-tune the Offset setting, so that only the noise is
removed, not parts of the signal (ideally, the light green
line should be between the yellow line and the spectrum
plot).
Parameters
Using the A/B setups
With the A/B buttons you can make instantaneous
switches between two different DeNoiser setups, allowing
you to quickly try out and compare different configura-
tions. You can also use this feature for separate settings
for two different sections of an audio recording. Proceed
as follows:
1. Make the settings you want for setup A.
2. Click on [Store] and then on the [A] button.
3. Make the settings you want for setup B.
4. Click on [Store] and then on the [B] button.
Now the two setups are stored, and you can switch between them sim-
ply by clicking [A] or [B].
Parameter Description
Freeze If you activate this button, you “freeze” the noise
floor detection process. The yellow noise floor
graph in the display will hold its current value (as
will the numeric noise floor value display below) un-
til you deactivate Freeze. This allows you to take a
closer look at the readings.
Reduction Governs the amount of noise reduction. The display
below this fader shows the amount of dB by which
the noise level is being reduced. The final result
also depends on the Ambience parameter, and on
the automatic Ambience and Transient analysis of
the original material, as described above.
Ambience This parameter is used to specify a balance
between the noise suppression and the amount of
natural ambience, which is essential for a natural
result. With a low Ambience setting, the sound can
become somewhat lifeless and sterile. A high set-
ting, on the other hand, preserves more of the am-
bient character of the sound, but the noise
suppression is less effective.
Offset This parameter serves as a threshold, governing the
overall level at which the noise reduction is per-
formed. For optimal noise reduction with a minimum
of sound coloration, this parameter should be set to
a value slightly above the noise floor level. To help
you do this, the offset value is shown as a light
green line in the noisefloor display, while the noise
floor is shown as a yellow line.
A/B/Store These are described below this table.
Classic When this is activated, a less CPU-intensive ver-
sion of the DeNoiser algorithm is used. Use Classic
mode if you are short on processing power. How-
ever, for optimum noise suppression, we recom-
mend that you deactivate Classic mode.
Bypass When this is activated, the signal passes through
the plug-in but you don’t hear the results of the pro-
cessing. Use this to compare the sound with and
without processing. Note: the analysis is always
performed, regardless of the Bypass switch. This
allows you to monitor the noise floor, spectrum and
level in the spectrum display.
Parameter Description