2013

Cleaning 71
The DeClipping algorithm is particularly good for audio material with clearly audible
clipping, e. g. distorted piano or vocals. The sound of distorted drumbeats on the
other hand is hardly ever improved.
Clip Level: Here you can enter the level at which the algorithm register the samples as
distorted and corrects them if necessary. This is important because different sound
cards have different clipping characteristics.
Get: Here you can determine the clip level automatically.
Output Level: The interpolated signal peaks create a change in the master volume
that must be balanced with the output level fader to avoid further distortion. Keep an
eye on the peak meter to the right of the dialog when doing this.
To be safe you can activate the "Limiter" which reliably prevents clipping.
DeHisser
The Dehisser eliminates regular "white" noise typically produced by analog tape
recordings, microphone preamplifiers, or AD transformers.
Noise Level: Here you should set the threshold of the DeHisser as precisely as
possible. Setting the value too low will result in insufficient removal of the hissing.
Incomplete removal of hissing produces artefacts and should be avoided. Setting the
values too high leads to dull results – parts of the wanted signal that are similar to
noise, such as the blow-off from wind instruments, are filtered out.
The setting doesn't cause any problems at a reduced hissing level.
Adaptive: The value for the noise level parameter is set automatically by determining
the level of the hissing present in the signal. If the value for the noise level is changed,
the effect will be relative, i. e. the resulting value will be derived from the automatic
setting and the setting of the noise level fader.