Spoke sometime a go an sound engineer who is working for a company which does measuring in the music industry like studio's live events but also boardrooms, canteens etc but most work is done for infrastructure like sound walls for absorbing/deflecting traffic noise and other environment projects where sound is involved. He told me that the measuring Mic's they us has to be as linear as possible. They use calibration files but he noted frequently the Mic's has to be re-calibrated to make or measurings legit. Now the change after recalibration is minimal but after a few years it is getting a bit larger. For the use of high end audio/room correction in his opinion using a old/original calibration file does not make much sense if the Mic is already more than 3 or 4 years old you have to recalibrate it if you want the best result. However he doudt that you can hear any difference.
I also did a test with mine one Superlux an a self made calibration file based on the enclosed graph (here under) that was included in my Superlux box. As you could see the Superlux graph is already quite linear without calibration file. When I measure them both (with and without calibration file) the graph are barley changed an I really can't hear a difference between the two.
Are their forum members who did for instance a measuring with a UMIK-1 Mic with and without calibration file an could you hear a clear difference. Who is recalibrating their Mic if so after how many years.
I also did a test with mine one Superlux an a self made calibration file based on the enclosed graph (here under) that was included in my Superlux box. As you could see the Superlux graph is already quite linear without calibration file. When I measure them both (with and without calibration file) the graph are barley changed an I really can't hear a difference between the two.
Are their forum members who did for instance a measuring with a UMIK-1 Mic with and without calibration file an could you hear a clear difference. Who is recalibrating their Mic if so after how many years.
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