6.0

Menu Effects
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Please note that this algorithm was not necessarily deve-
loped to remove pops and clicks from audio material.
However, a typical click noise floor such as vinyl recordings
can still be successfully treaded with this function.
The algorithm can also work without a noise sample – then
only white noise is reduced, such as tape hiss or microphone
amplifier hiss.
Mark a range over the audio material you want to be reduced
in the recording! Then create the noise sample before
opening the Noise Reduction dialog using the menu “Effects
> get Noise Sample”!
Without Noise Sample: Use this mode if you do not have
a noise sample and you only want to reduce white noise
(dehissing).
Type Noise: Here you can select between different noise
types.
Type Audio: Here you can select between Music and Voices
to control the denoising algorithm.
Absorption: This parameter lets you adjust the level of
noise to be reduced. Please adjust this level carefully – it
controls the quality of the complete noise reduction
algorithm! If the level is too low you still hear noise and
artificial high tones. If the level is set too high you may
loose high frequencies of your audio material.
Reduction: Here you can adjust the balance between ori-
ginal signal and denoised signal. In most cases is is useful
to keep a certain amount of original (non denoised) material
– e.g. with a setting of -12 dB. This keeps as much of the
natural color of the audio material as possible.
Test Realtime: This button starts the realtime preview
function of the actual settings on fast PCs.
Test Offline: This buttons starts the preview funtion for
slower PCs – small parts of audio material are calculated
and played back.
Remove DC offset
This function in menu ‘Effects’ removes a DC offset in the
selected range of a Wave project (RAP or HDP). Some sound
cards produce such a DC offset while recording, so it is
useful, if you can remove it!