Monitoring level meters
This page provides insights into HOLOPLOT's distinctive visualization of output and input level meters and guidance on effectively interpreting them based on your current workflow stage.
The Input and Output level meters are designed for use at every stage of the workflow, particularly during live performances. They offer insight into the system's overall performance and provide crucial information to ensure it sounds as intended. The visualization of the Output and Input meters is automatically configured based on the arrays and beams defined in the HOLOPLOT Plan. This section in HOLOPLOT Control allows for:
Beam input level monitoring: This displays all beams grouped by audio input, arrays, or preset layers, allowing you to identify connected arrays and their properties.
Output level monitoring: This feature displays array-level levels, providing a quick overview and enabling detailed monitoring of modules within a selected array, ultimately identifying the beams connected to each module. When a Project includes third-party speakers, the Processors' output levels are displayed on a separate tab.
System-wide output level monitoring: This aggregates all arrays' output levels into a single view, always visible in the Control Panel.
Learn more about how the signal flows from the AoIP standards to HOLOPLOT's Audio Modules in Audio signal flow
Beams & Audio Input level metering
The Input Metering visualization for beams consists of two peak meters:
Pre-EQ: beam levels before EQ
Post-EQ: beam level after EQ adjustments.
Below is a detailed explanation of how HOLOPLOT Control displays beam levels.
The beam's dB scale includes an 18 dB headroom to accommodate the internal DSP of the Audio Modules, allowing for additional EQ adjustments, beam processing, and combining signals from multiple audio inputs into the beam.
When the signal reaches 0dB, a peak hold indicator will appear. The system, array, or modules' output level meters will accurately indicate whether a limiter is in place.
Here is how to use the Input Meter page to monitor beam and audio input metering:
Go to the Inputs section in the navigation bar. By default, the left panel displays all beams organized by audio input, accompanied by a meter for each input. You can group beams by array or preset layer; however, the meter appears only when the beams are grouped by audio input.
Click All Beams or any item on the left panel to see the detailed beam levels (pre- and post-EQ).
Click on a specific beam card to expand the Properties Panel. The panel displays the array(s) connected to the beam and its properties.
When working with a project with third-party speakers using a HOLOPLOT Processor, it is also possible to monitor the input levels of the generic beams.
System, array, and module output metering
The Outputs page considers each driver of every module. It allows monitoring at various levels, from high-level (system-wide or array) to low-level (individual modules and their connected beams).
HOLOPLOT Control presents distinct levels per driver type:
X1 MD80-S: SUB, LF, and HF.
X1 MD96: LF and HF.
X2 MD30: LF
They are represented in:
Peak meters: Maximum, minimum, and mean values for each passband (SUB, LF, HF).
Limiter values: Maximum, minimum, and mean values for each passband (SUB, LF, HF).
Below is a detailed explanation of how HOLOPLOT Control displays output levels.
Here is how to monitor output meters at different levels of granularity:
Monitor all system output levels at a glance on the Control Panel.
To monitor output levels for each array, go to Outputs.
To check the output levels of individual modules within an array, double-click the cards with the array name.
Click on the card with the array or module name to display the Properties Panel, which shows the beams (including input level meters) connected to the selected array or module.
In OS 2.4, non-playing drivers are removed from the Output Level Metering. You can still view the percentage of inactive drivers for each Level Meter by hovering over the Card.
HOLOPLOT Processor's Outputs are not considered at the System-wide Level Meter. Please refer to the Outputs › Processors page in HOLOPLOT Control for that information.
Output level settings
OS 2.4 introduced the option to view output levels using either pre- or post-limiter values. When selecting pre-limiter values, you can also choose whether to see the meters when the system is muted. The meters will appear in grayscale instead of the usual green. To adjust this, go to Outputs › Arrays and click the settings icon.
Active limiters
The limiter bars now use color coding to show the number of drivers (within a module or an array) limiting and the limiting level (dB). This helps quickly assess the severity and decide if action is needed. Also, when the limiters are active, the peak hold label displays the gain reduction.
Processor output metering
HOLOPLOT Processors can deliver up to 256 audio channels. In OS 2.4, each audio output channel corresponds to a driver that operates with separate processing. The Processor reports its output levels information back to HOLOPLOT OS/Control, which can be monitored on the Outputs › Processors page.
Unlike HOLOPLOT modules, the Processor's meters display a single band and a single driver.
Monitor all Processors' output levels at a glance on the Control Panel. Click the → button on top of the system output levels to switch views.
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