Soft dB Opus Suite Building Acoustics Module Airborne Sound Isolation between Rooms ASTM E 336_ISO 140-4 - Manual (Page 23)

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7.2.2 Reverberation: Spectrum
This display shows a selected result for each frequency band and global using a bar graph. To select a
frequency or the global, simply click the corresponding bar.
These buttons are used to select the result to display on the
spectrum graph and Global Bar.
This indicator displays the selected result for the global.
This array displays the computed results for the selected frequency
band or global. To select a frequency band, click on the spectrum at
the desired frequency to move the cursor. To select the global, click
on the global bar.