Hello everybody, I purchased an iMM-6 mic and was using REW or ARTA proggs but didn't get a line/curve in a graph for IEMs I was expecting. Instead I got something fur-tree like. On one PC with built-in sound card I got the graph like in pic.1. On another PC I had something with a lot of noise. See pic.2 What is the correct way of measuring FR for IEMs?