User manual

68 Remove
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If the noise level is constant, a better result may be obtained manually
(Adaptive off). However, the noise level value must then be set
precisely.
Audio type: Lets you set the audio material that is to be edited; the
algorithm is adjusted accordingly.
Noise Reduction: this option allows you to adjust the damping of the
band noise in decibel units. In many occasions it is the best solution,
not to eliminate the noise completely, but to damp it only -3 - -6 dB,
hence maintaining the natural sound of the original material.
Quality: The processing quality can be set in two stages. You can
use this to precisely adjust the values in the dialog for standard
quality adjustment without skipping playback, and can then select a
higher quality for final burning.
Removed: This option allows you to listen to the music that would be
filtered away by the Dehisser.
Artefacts
With incorrect settings, the DeNoiser and the DeHisser may leave
behind a metallic chirping or twittering sound, the so-called artefact
noise. The cause of this is the incomplete removal of the distortion.
The ear is quite sensitive to this sound because of its synthetic
character. This problem, in practice, only occurs in especially difficult
cases.
To achieve the best possible results you should pay attention to the
following hints:
• First, select a preset from the selection menu. In most cases the
result is satisfactory.
• Be careful when "denoising" the effect: Less is more! The distortion
sound should no longer be audible, otherwise artefacts may be
brought about.
We recommend removing any DC offset that may exist from the
material before using it ("Effects" menu > Cleaning > "Remove DC
offset" (view page 69)).