Let’s say I have an FFT output that’s many, many, bins wide, and I want
to compress that information into a narrower
display (let’s say from 4M bins down to 1024 bins).
My approach has been to sum up each set of [4M/1024] bins, and use that
as the final output. But should I be averaging
across the bins? That is, should I be taking each 3906bin group from
the 4M bin wide spectrum and computing an average
across those bins, and stuffing it into the appropriate place in the
1024-wide spectrum, or something else?
Seems to me that if I have 4000 1Hz-wide bins, I should sum them to give
me the total power in a single bin that
“represents” the same amount of bandwidth. But is it more subtle than
Principal Investigator, Shirleys Bay Radio Astronomy Consortium