User Manual

WAVELAB
8 – 168 Metering
Making settings
You can adjust the behavior and display of the meters as desired, and as-
sign up to five sets of Spectrum Analysis settings to the Preset buttons,
for instant access. Open the Settings dialog by selecting “Settings” from
the Options pop-up menu or clicking the “tool” icon.
The dialog has two tabs (see below).
• The Process tab contains parameters for the actual analysis:
Setting Description
Analysis
block size
The higher this value, the higher the accuracy in the frequency domain (the
spectrum is divided into more bands). However, raising the block size value
will also require more CPU power and introduce more latency. Therefore:
High values may only be usable for off-line monitoring.
Analysis
overlapping
To get more accurate results, the program can analyse overlapping blocks
(i.e. samples will be analysed more than once). This setting determines the
amount of overlap between each block – the higher the value, the more ac-
curate the results.
A word of caution: raising this value is very CPU intensive. Compared to no
overlap at all, a setting of 50% requires twice the amount of CPU power, a
setting of 75% requires four times the CPU power, etc.
Smoothing
window
Allows you to choose which method should be used for pre-processing the
samples in order to optimize the display of the desired information in the
spectrum. The smoothing window sets a compromise between the accu-
racy at which a frequency can be detected, and the noise-floor.
This parameter is best left at its default setting, if you’re not an expert in the
field.