How calculate full range values of RT60 and others variables

NIDH · Feb 2, 2025

I need help with exporting data for my university project. When I export data for RT60, RT30, RT20, EDT, C50, C80, and D50, the full range value of RT60 is zero, but the other values are okay. I'm confused about the correct method to calculate the full range of RT60, as well as EDT, C50, C80, and D50. If someone can solve my problem, I would be very thankful

John Mulcahy · Feb 3, 2025

There are full range values for all the parameters in the image you posted except for the T60M frequency domain model value, which is not applicable for full range.

NIDH · Feb 3, 2025

What I understand is that we can't calculate the full range of RT60. Why is it possible for T30 and T20?

For other parameters, how can I calculate the average? For example, if I measure 3 points, how can I calculate the average for C80 or C50 for dB results? Does the formula 10*log((10^(C80.point1/10)+10^(C80.point2/10)+10^(C80.point3/10))/3) apply? And for the average of 125 Hz across 3 points, does the same formula work?

Because when I searched, I couldn't find formulas I could use in the correct way.

John Mulcahy · Feb 3, 2025

T20, T30, Topt and T60M are all RT60 values, see the help: https://www.roomeqwizard.com/help/help_en-GB/html/graph_rt60.html

Full range values are derived from the unfiltered impulse response. If you want an average for selected octave bands use an arithmetic average.

NIDH · Feb 3, 2025

Yeah i check it but was confuse about it same thinks.
And for EDT or ts or D50 the same think arithmetic methode i could use ?
And for C80 and C50 the log formulas i sent, is it correct , i could use it. or does other methode for calculate their selected averadge ?

John Mulcahy · Feb 4, 2025

Use arithmetic averages of the displayed values.

NIDH · Feb 6, 2025

Thank you John

How calculate full range values of RT60 and others variables

NIDH

Registered

Attachments

John Mulcahy

REW Author

NIDH

Registered

John Mulcahy

REW Author

NIDH

Registered

John Mulcahy

REW Author

NIDH

Registered

Popular tags