Toa D-2000 Series - Manual (Page 152)

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12. GLOSSARY
• Auto-Leveler function
The auto-leveler function performs to keep the output level constant by suppressing the change of sound
volume. Setting the target level (the constant level to be automatically adjusted to) and the maximum gain (the
amount of gain to bring the lower level to the target level) automatically compensates for the input level. Note
that setting an excessive amount of gain increases the input sensitivity, easily causing feedback.
• Gate function
The gate function allows the input signal to be passed, attenuated or cut depending on its signal level.
The gate allows the signal to pass when open, and attenuates or cuts the signal when closed. The gate opens
when the input signal reaches a level above the Threshold plus Hysteresis parameter (half the Hysteresis).
Once open, the input signal must reach a level below the Threshold minus Hysteresis parameter to close.The
Ducker function and the NOM attenuation function are controlled by the gate's open/close operations.
Note
The gate opens when the input channel is set to ON even if the gate is set to OFF.
• Auto-Mixing function
Both the Ducker function and the NOM Attenuation function are Auto-Mixing functions that automatically
adjust individual input channel gains in response to input signal level.
The Auto-Mixing functions can operate in each of the 4 groups, GROUP A through D. Although all the input
channels are grouped into GROUP A by default, they can be individually assigned to the desired groups.
• Ducker function
The ducker function is one of the D-2008SP's Auto-Mixing functions that adjusts individual input channel gains
in response to input signal level.
When a received signal exceeds the gate threshold level, the ducker function automatically attenuates all
other input signals which are lower than that input channel in priority.
This function operates in individual Auto-Mixing groups.
Note
When an input channel is set to OFF, the ducker function for that channel does not operate.
• NOM Attenuation function
The NOM Attenuation function is one of the D-2008SP's Auto-Mixing functions that adjusts individual input
channel gains in response to input signal level.
NOM is an acronym of Number of Open Microphones, and represents the number of microphones in open
status (the number of input channels with open gates).
The NOM attenuation function automatically adjusts the open microphone's input channel gain depending on
the number of open microphones. The open microphone channel gain is attenuated by the gain set on the
Auto mix View each time the number of open microphones doubles. The use of this function allows an output
level to be kept constant, thus helping to prevent feedback.
This function operates in individual Auto-Mixing groups.
When an input channel is set to OFF, the NOM attenuation function for that channel does not operate.