I have been trying to get ETF to return fairly consistent reading for the sub in my living room. I notice when I take two consecutive readings, there can be as much as 6-10 dB change in some of the peaks and dips when FFTing into frequency vs dB.
1. Can the MLS in ETF give better results?
2. Additionally I notice differences between the sweep reading and MLS (gate time 200ms). Which one should be trusted?
3. I also notice peak frequency motion in their location
4. Lastly, when aligning the impulse initially during calibration, I have three distinct peaks, for sound card, system and system + soundcard. Which two do I need to allign up? I am thinking its system and soundcard.
How consistent and reproducible have your readings been?
Any thoughts or suggestions?
James
1. Can the MLS in ETF give better results?
2. Additionally I notice differences between the sweep reading and MLS (gate time 200ms). Which one should be trusted?
3. I also notice peak frequency motion in their location
4. Lastly, when aligning the impulse initially during calibration, I have three distinct peaks, for sound card, system and system + soundcard. Which two do I need to allign up? I am thinking its system and soundcard.
How consistent and reproducible have your readings been?
Any thoughts or suggestions?
James