15.0

Dehisser
The Dehisser eliminates regular "white" noise typically produced by analogue tape recordings,
microphones, pre-amplifiers, or converters.
Noise level:
Set the Dehisser's input threshold as precisely as possible. Low settings result in incomplete deletion of
the hissing. An incomplete deletion of the hissing produces artifacts and should be avoided. High settings
produce dull results. Useful signals (e.g. the blow of a wind instrument) that are similar to hissing are also
filtered away. If the level of the hissing is low, the setting is no problem.
Audio type
: Lets you set the audio material that is to be edited; the algorithm is adjusted accordingly.
Noise reduction
: Set the attenuation of the hissing in decibels. It often makes sense to reduce the hissing by only 3 to 6
dB in order to keep the audio material sounding natural.
Removed hiss
: To test your results, you can listen to the filtered-away part of the music prior to downloading or burning
onto a CD. Remember, this is for test purposes only.
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.
Adaptive
: The value for the noise level parameter is set automatically by determining the hiss contained in the
signal. If the noise level value is changed, its effect becomes relative, i.e. the resulting value is determined
from the automation as well as the noise level controller settings.
One advantage of this is that you no longer have to set the noise level value manually and that this value
can also be adjusted later if the noisy portion fluctuates, e.g. if you use music tracks with differing hiss
levels within one project.
If the noise level is constant, then a better result may be obtained manually (adaptive off). However, the
noise level value must then be set precisely.
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