User Manual

WAVELAB
6 – 132 Editing in the Wave window
The dialog contains the following items:
Option Description
Time resolution This sets how many samples are used to compute the average loud-
ness (“RMS”). The longer the time set here, the more the loudness
variations are evened out in the envelope. With shorter times, the en-
velope will be more sensitive to individual peaks.
Slow/Fast tracking “Slow tracking” takes into account more samples than the “Time res-
olution” setting, but the “older” the samples, the less they contribute
to the average loudness calculation. This will produce a more evened
out envelope curve. “Fast tracking” takes into account the exact num-
ber of samples as defined by the Time resolution setting, and all are
taken into account equally to calculate the average. This last method
produces a curve with less “inertia”, hence the name.
Envelope types This allows you to specify which envelope curves to display, and to
set a frequency range for the filtered envelope curves.
Main If checked, this curve is shown in black and displays the overall aver-
age loudness of the audio. If unchecked this will not be shown.
Low pass filter If checked, this curve is shown in red and displays the overall average
loudness of the audio in the lower frequency area. You can specify
the frequency in the value field below the checkbox.
Band pass filter If checked, this curve is shown in green and displays the overall aver-
age loudness of the audio in the mid frequency area. You can specify
the center frequency in the value field below the checkbox. The “Q”
parameter determines the bandwidth of the Band pass filter.
High pass filter If checked, this curve is shown in blue and displays the overall aver-
age loudness of the audio in the higher frequency area. You can
specify the frequency in the value field below the checkbox.
Apply Any changes made in the dialog will be applied when this is clicked.