I'm an electrical engineering major and I have a question regarding a project I'm working on.
I'm supposed to design 3 band-stop filters on MATLAB for echo cancellation/suppression.
My problem is not filter designing, but with taking acoustic measurements of a classroom since I have little or no information in that area.
The supervisor suggested taking coefficients using impulse response invariant! I could not find something solid or a method while searching online.
So my question is, what is the simplest way of taking acoustic measurements of a normal size room/classroom? How to find the coefficients through impulse response invariant method?
All suggestions are appreciated, current tools I have (dynamic mic, speakers, audio interface (Focusrite Scarlet 2i2), RoomEQ wizard, MATLAB/Simulink, FPGA DE2 board with cyclone)
I tried using RoomEQ wizard and followed their tutorial but did not work properly or maybe I`m not getting the whole picture.