11.5

92 Effects and effect plug-ins
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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.