Hi guys,
I used REW to test my room. When I asked for help for acoustic treament later, one of my friends told me my measurement method might be incorrect for the reason that both the impulse responses and waterfall plots don't look plausible, so the mdat might be invalid for analysis.
Here I uploaded my mdat file and I introduced my method. And I need advice to see if my measurement is valid.
My soundcard: RME Fireface UCX (using its internal mic preamp)
Steps.
1. Peference-Soundcard page. Use a TRS cable from soundcard Output 1 to Mic/Line Input 1. Phantom power off. Soundcard Output Volume = 0db, Soundcard Mic/Line Gain = 0db.In Preference-Soundcard page during the calibration, The output and input level are alomost both equal to -6db.Calibrate. Unplug the TRS cable.
2. The SPL Meter page.Press Calibrate. Adjust Soundcard Output level to -32db, so that my external SPL meter (with no connection to the computer) reads 76db. Type 76db in the calibration pop-up window.
3. Plug Behringer ECM 8000 to Mic/Line Input 1. Phantom power on.
4. The Measure page. Press Check Levels. Adjust Soundcard Mic Gain to +45db so that REW Input level read around -18db.
5. Start Measuring.I used Left/Right only signal during the measurement.
It seems that my mdat file could not be upload (6MB). Any other way to upload my mdat?
I used REW to test my room. When I asked for help for acoustic treament later, one of my friends told me my measurement method might be incorrect for the reason that both the impulse responses and waterfall plots don't look plausible, so the mdat might be invalid for analysis.
Here I uploaded my mdat file and I introduced my method. And I need advice to see if my measurement is valid.
My soundcard: RME Fireface UCX (using its internal mic preamp)
Steps.
1. Peference-Soundcard page. Use a TRS cable from soundcard Output 1 to Mic/Line Input 1. Phantom power off. Soundcard Output Volume = 0db, Soundcard Mic/Line Gain = 0db.In Preference-Soundcard page during the calibration, The output and input level are alomost both equal to -6db.Calibrate. Unplug the TRS cable.
2. The SPL Meter page.Press Calibrate. Adjust Soundcard Output level to -32db, so that my external SPL meter (with no connection to the computer) reads 76db. Type 76db in the calibration pop-up window.
3. Plug Behringer ECM 8000 to Mic/Line Input 1. Phantom power on.
4. The Measure page. Press Check Levels. Adjust Soundcard Mic Gain to +45db so that REW Input level read around -18db.
5. Start Measuring.I used Left/Right only signal during the measurement.
It seems that my mdat file could not be upload (6MB). Any other way to upload my mdat?
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