[sdiy] Multiple consecutive freq response curbes on a spectrum analyzer graph ??

[Neil Johnson]

I think TrueRTA can do what you want:

https://www.trueaudio.com/rta_abt1.htm

I think it can store up to 20 plost in memor and display them
together.  Even the free version comes with

" 20 Memories which can be overlaid"

Neil
--
http://www.njohnson.co.uk