User Manual

Table Of Contents
WAVELAB
Spectrum Editor 11 – 263
Common filtering parameters
There are two pop-up menus in the “Filtering operations” section; the up-
per selects the type of filter processing to be performed, and the lower
selects a filter type (only available for some of the filter operations). Addi-
tionally, you can specify the Gain of the filtering (i.e. the attenuation level)
as well as the Filter steepness.
Filter steepness determines how sharply or quickly frequencies above or
below a certain point are attenuated. Steepness is stated in dB per oc-
tave, with higher numbers indicating a steeper filter. WaveLab uses high
quality linear-phase digital filters capable of “infinite” steepness
(>1000dB/octave).
The Steepness parameter crossfades the processed part with the un-
processed part. It could be described as a crossfade in the frequency do-
main. If the steepness value is small, the selected region will contain much
of the unprocessed signal near the frequency edges.
The “Crossfade time” parameter sets the length of the crossfade (when
the processed signal is merged with the unprocessed signal).
For filtering operations the following processing options are available in
the Spectrum editor:
Gain
dB
Frequencies
Filter Steepness