Specifications

Audio Plug-Ins Guide342
7 To fine-tune the effects of the noise reduction,
adjust the Response, Release, and Smoothing
sliders to achieve optimal results.
8 To further increase noise reduction, edit the
Contour Line. The quickest way to do this is to
move the entire Contour Line upwards. In the
Spectral Graph, Control-drag (Windows) or
Command-drag (Mac) to select the entire wave-
form range. Then click the Move Breakpoint Up
button. The higher you move the Contour Line
above the noise signature, the more noise is re-
moved. See “Editing the Contour Line” on
page 343.
9 If you feel that some of high end frequencies of
the audio have been lost due to the noise reduc-
tion process, try using the High-Shelf EQ to
compensate. To do this, click BNR’s Hi Shelf but-
ton and adjust the frequency and gain sliders un-
til you are satisfied with the results.
If you are happy with the results of the noise re-
duction, use the Plug-In Settings menu to save
the settings so that you can use them again in
similar sessions.
Performing Noise Reduction on
Audio that Lacks a Noise-Only
Portion
Ideally, audio that you want to perform noise re-
duction on will have a noise-only portion at the
beginning or end of the recording that DINR can
analyze and learn. Unfortunately this is not al-
ways the case, and in many recordings some
amount of signal is always mixed with the noise.
Obviously, analyzing such audio will produce a
noise signature that is based partially on signal.
Luckily, DINR has provisions for cases such as
this, and this is where the Auto Fit feature comes
in.
If your audio file lacks a noise-only portion for
DINR to analyze, you can still obtain reasonable
results by selecting and learning a segment of
audio that has a relatively low amount of signal
and a high amount of noise (as in a quiet pas-
sage). By then selecting a frequency range of the
noise signature and using the Auto Fit function
to generate a generic noise curve, you can re-
compute the Contour Line based on this selec-
tion.
Some editing of the newly generated Contour
Line will probably be necessary to yield opti-
mum results, since it is not based entirely on
noise from your audio file. See “Editing the Con-
tour Line” on page 343.
To enable Learn Last Audio mode, Alt-click
(Windows) or Option-click (Mac) the Learn
button. This button flashes red when armed
for Learn Last Audio mode. When you hear
the target noise, click
Learn a second time.