page 3 – 50
AM-10HD / Aug 2008
A M - 1 0 H D G U I
10-Band Limiter Dynamics Screens
Limiter Threshold Screen
Clicking on the Limit Thresh tab on the graphic opens up the adjustment screen
for the limiter threshold.
The thresholds are adjustable over a +/‑10dB range and interact with the Drive
control. Because the thresholds are adjustable over such a wide range, extremely
capable frequency conscious limiting can be created when needed.
Each of the limiter thresholds can be adjusted separately or in groups according
to the manner described in the earlier AM‑10HD Graphical Interface Operation sec‑
tion. Lower settings (more negative numbers) reduce the threshold, causing limiting
to occur at lower audio levels. Conversely, higher thresholds cause limiting to occur
at higher audio levels.
Because of the frequency response contouring in AM NRSC pre‑emphasis it
is generally customary to adjust the limiter thresholds in somewhat of a sloping
fashion according to the limiting sensitivity curve required, creating a multiband
frequency conscious limiter of any configuration.
Note: Radically different settings between adjacent bands cannot cause strange
sounds, although operationally it doesn’t make much sense.
10-Band Limiter Threshold Screen