User Manual

WAVELAB
Plug-in Processor Reference 33 – 771
The whole Declicking process can be visually monitored in the Input and
Output displays of the DeClicker window (showing the incoming audio
and the processed - DeClicked - audio, respectively). This helps you to
adjust the parameters. Furthermore, if you activate the Audition button,
only the removed material will be heard (and shown in the Output display).
Make sure that no low-pass filter has been applied to your audio material
before you edit it with DeClicker. This may affect the detection of clicks.
Parameters
Parameter Description
Audition button When this is activated, only the removed material will be heard. The
Output display will also show the waveform image of the removed mate-
rial in this mode.
Classic When this is activated, the DeClicker attempts to remove both audible
clicks and crackle noise. When it’s deactivated, only single clicks will be
removed while crackles (rapidly repeated clicks) are ignored. Which
mode to choose depends on the source material. Note also that Classic
mode requires less CPU power.
Threshold This setting determines the amplitude (level) required for a click to be
detected. In many cases, DeClicker’s sensitive algorithms identify a lot
more clicks than you can actually hear. To avoid wasting processing
power to remove inaudible clicks, raise this parameter to a high value,
and then lower it until all the artefacts that you actually want removed
are detected. The lower the setting, the more clicks will be detected but
also the higher the risk of audible artefacts. If in doubt, activate Audition
mode and check that the removed material doesn’t contain any actual
musical or rhythmical information, etc.
DePlop This setting controls a special highpass filter which works on signals
below 150 Hz. It cuts away the “plop noise” which sometimes appears
after eliminating a click. The slider adjusts the filter frequency (off - 150
Hz).
Note: This function is best applied to older recordings, which often use
a narrow frequency range. Be careful when applying this function to
modern recordings, as you may risk removing parts of the useful signal!
Quality This determines the quality of the click removal and audio restoration,
with “4” being the best quality setting. Please note that selecting higher
quality settings also means that more processing power is consumed.
Also, note that in some situations it might be more productive to use a
lower Quality value. One example of this is when two clicks follow each
other in quick succession or when you tackle a click in a low level part
that is followed by a loud part.