Soft dB Opus Suite Building Acoustics Module Reverberation Time ISO 3382 - Manual (Page 9)

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Step 4 Visualize the Measurement
Click on the button to select the display from the menu. The available displays are:
Decay
This display shows the time decay for a given frequency band or for the global.
Spectrum This display shows a selected value from each frequency band in a bar graph form.
Data
This display shows all values for all frequency bands in an array.
Further information about each display is available in section 6.5, p. 12.