Measurements Average or Filters Average?

[Marzolino]

Hi!
for many years I've experienced with REW, testing a lot of speakers and other audio devices and I'm so grateful for that big support, there is no one like REW!
Now I've two litle questions, if you would kindly consider that:

1 - for the measurement procedure (button "Measure" in the main page) I use to take 4 measurements for each speaker (left & right), along a semi-circle in front of the speaker, then open the 4 measurements ("All SPL" page), push the "Controls" button and calculate the Average of the original 4 measurements and, finally, I use that average measurement in the EQ procedure to get filters. There are 3 ways for Average calculation: dB Average, RMS Average and Vector Average , which of these is the best to use in the EQ procedure?

2 - If I won't to use the average measurement in the EQ procedure I could get 4 sets of filters, one for each position of the original measurements.
Is there a way to "merge" these 4 filters in .txt format and get an averaged filter in .txt format?

Thank you !

Marzolino

 

[John Mulcahy]

There isn't a way to get an averaged filter set. For EQ purposes a dB average may be preferable if you first smooth the responses. If the responses are unsmoothed or have very little smoothing use the rms average.

 

[Marzolino]

I usually prefer "Var Smoothing" on measurements so for EQ purposes is the dB Average the best one?

 

[John Mulcahy]

At the low end where there is little smoothing the dB average would give too much weight to dips in the response, so better to use the RMS average.

 

[Marzolino]

OK, Thank you !