Zone Statistics

The Zone Statistics tool in HOLOPLOT Plan gives you a fast and clear overview of how well your sound system design meets SPL and delay spread targets across your selected coverage areas. This feature is available in both SPL simulation and delay spread simulation modes.

Overview

Zone statistics help quantify how much of a selected zone meets your defined performance thresholds. It’s a quick way to assess coverage uniformity (in SPL mode) or clarity (in delay spread mode) without manually inspecting the simulation maps.

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How it works

SPL simulation mode

In SPL mode, you define a dB range (e.g., ±6 dB) around a reference value. The tool calculates what percentage of the selected zone(s) falls within that range.

• Reference value: Based on the selected beam's simulation data.

• Range input: Set using the ± input field (editable via direct input or arrow keys).

• Result: Displayed as a percentage (e.g., "97% of the zone is within ±6 dB").

This lets you evaluate the uniformity of level distribution across a zone at a glance.

Delay spread simulation mode

In delay spread mode, you define a threshold in milliseconds (e.g., under 50 ms), and the tool shows what percentage of the selected zone meets this clarity criterion.

• Reference: The tool considers each grid point’s delay spread value.

• Threshold input: Set in milliseconds.

• Result: Percentage of the area with delay spread below the chosen value.

This helps you evaluate temporal clarity and potential intelligibility issues.

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Multi-zone support

You can apply zone statistics to one or more zones at the same time:

• Select multiple zones in the Plan viewport.

• Adjust the dB or millisecond range as needed.

• The displayed percentage reflects the aggregate result for all selected zones.

This is especially useful when comparing different areas of a venue or validating design performance across a wide audience area.