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Acouso

Room Analysis

STI potential and critical distance

2.2 interface

Use the room’s speech screening and direct-to-reverberant distance estimates as supporting design information.

On this page

Read STI potential#

  1. Open the STI tab in Room Analysis.
  2. Read the treated estimate and its description.
  3. Compare it with the untreated baseline.
The value comes with a description of what it assumes. Select the image to enlarge it.

Screenshot preview

Read critical distance#

  1. Open Critical Distance.
  2. Read the distance and its units.
  3. Compare the treated and untreated estimates.
Critical distance is where direct and reverberant sound are about equal. Select the image to enlarge it.

Screenshot preview

Q is the assumed source directivity. Changing it changes the estimate, so quote Q with any value you report. Report Export always uses Q=1.

Check your result#

Use these as supporting information alongside reverberation. Room Analysis STI potential and Acoustic Ray results are different predictions — don’t quote one as the other.

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