Mind Monitor

James wrote: ↑Thu Dec 12, 2019 4:54 pm The calculation uses logs but the results are linear. You don't need to do anything special to get an average

Thanks!

James wrote: ↑Tue Dec 10, 2019 5:52 pm You don't need to do anything extra. Average is still average.

The average of values in the bel scale require first converting to linear, then averaging, then converting back to bel. i.e. the average of 50dB and 100dB isn't 75dB. Or am I missing something?

James wrote: ↑Sat Dec 07, 2019 1:52 am Values from the Interaxon SDK are in the approximate range -1:+1.
To convert these to the approximate range 0:100 to make them more understandable to the lay person you add one and times by 50.

Cool, thanks. What about the issue of computing an average on a logarithmic scale?

James wrote: ↑Fri Dec 06, 2019 9:21 pm Average is Sum/Count.

where does the +1 and *50 come from?

James wrote: ↑Sun Oct 06, 2019 5:22 pm #1 - Yes
#2 - Bels
#3 - =(AVERAGE(J:M)+1)*50

Can you explain the function for averaging? Because the bel scale is logarithmic do we have to convert the bel values to linear, then average across all sensors, and convert back to bel? Thanks!