Ashly nX1504 Operating Manual page 25

Operating Manual - nX, nXe, and nXp 150W/75W Power Amplifiers
Link Group - Group to which all parameters are assigned, for simultaneous adjustment to multiple limiters
Attenuation Bus: All compressors assigned to the same attenuation bus will apply the largest amount of current gain
reduction from any one of the assigned compressors. This is typically used used for tracking compression across stereo signals.
Show Meter On Graph - Overlays the input/iutput level meters on the graphical display.
Detector Type - This selects between peak or average detector operation.
Peak Detector - Setting the detector type as peak means that only the peak level of a signal is used to trigger the
compressor. Peak detect is typically used for limiter applications where any signal level above a certain point is undesireable.
In peak detect mode, attack and release times are both adjustable.
Average Detector - Setting the detector type to average means that a computed average signal level is used as the
compressor trigger instead of peak levels. The averaging detector is more musical and natural sounding and typically used to "thicken"
vocals. When using the average detector, attack and release controls are replaced with a single average rate control which adjust the
speed at which compressor action occurs.
Autoleveler
The auto leveler is a dynamics processor used to automatically boost or
cut a signal to a user-defined target level. The target level is the primary setting
in the autoleveler, as it determines the constant level to which an input is boost
or cut. The autoleveler can be used in situations such as speech re-enforcement,
where an unknown source level needs to be maintained at a specific output level.
For example, a podium microphone where different speakers will be presenting
may have an auto-leveler applied to ensure that strong or soft speakers' voices
are amplified appropriately. The controls for the auto leveler are split into two
categories, basic and advanced. It is recommended you start with the basic
controls, and if fine tuning is required, use the advanced controls. Warning:
Depending on the settings, it is possible to apply up to 27dB of gain with the
auto leveler.
Basic Parameters:
Target Level - The desired continuous output level of the signal.
Action - Sets the ratio, hold time, and gain change rates (see below for
definitions). These settings are general starting points for how the auto leveler
should behave. Action can also be user defined under advanced controls, with
three drag points available for a more visual adjustment.
Action Ratio Hold Time Gain Increase Gain Decrease
Aggressive 10:1
Normal 4:1
Gentle 2:1
Maximum Gain - This is the total amount of gain the auto leveler may apply before it stops affecting the signal.
Maximum gain controls the threshold below target using the following formula:
0 Seconds 20 ms/dB
1 Second 50 ms/dB
2 Seconds 100 ms/dB
Threshold Below Target = Max Gain ÷ ( ( 1 ÷ ratio) - 1)
5 ms/dB
10 ms/dB
20 ms/dB
25