Setup guide

Dirac Theater Setup Guide Version 1.01
Document # 9301H40300V1.01
18
Figure 17. Optimize System Screen
Next, Dirac Live
®
will perform impulse correction. The software will attempt to adjust for
reflections or reverberations – “room modes” – coming off the auditorium wall, which cause
portions of the spectrum to get reinforced. Dirac Live
®
attempts to correct the time confusion that
is created by those reflections. It also attempts to correct the distance misalignments between the
woofer, mid-range, and tweeter. Such misalignments will cause a trough or a bump, depending.
The sound quality of an older speaker system can be significantly improved via impulse
correction.
In the example shown below (Figure 18) the upper plot shows a situation where the cones were
flabby; they were not being properly centered. There was a discrepancy between upper and lower
loudspeakers in a two-way system. The lower plot shows the target, the expected improvement
after optimizing the time elements.
5. To view the average impulse response before and after applying Dirac Live
®
, select the Impulse
response view. See Figure 18.
Click Optimize. The lower plot (After) shows the target
plot in red and the average magnitude response (in
blue
)
after o
p
timizin
g
.