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ISO3382 Acoustics Graphs

FuzzMeasure offers a set of fractional-octave graphs that calculate reverberation time and other values as laid out in the ISO3382 standard.


Common Settings
These graphs are all calculated using either Third-Octave or Octave Band decompositions of the Energy Decay Curve.
Reverberation Time (RT60)
The Reverberation Time graph estimates the time it takes for the direct signal to decay 60dB. It does this by calculating the slope of the decay over a specified range.
Early Decay Time (EDT)
The Early Decay Time graph is identical to the Reverberation Time graph except for the range over which it performs its estimate.
Clarity
Clarity is a measure of the ratio between the energy from 0 to Tms, and Tms to infinity, where T is a user-selectable interval value.
Definition
Definition (D50) is the ratio between the energy from 0 to 50ms, and the energy over the whole signal (from 0 to infinity.)