Hello, novice questions with basic REW problems:
I installed this version of REW, I have Windows 8 V5.17 beta 8 Windows installer with JRE allowing multiple instances
Is this the correct version? TIA
In Windows audio setup I have the input device (UMIK-1) level set at 52% or 0dB, when taking measurements (all SPL), there's a slight pause and I see 99dB for a fraction of a second and then the sweep starts, at the end of the sweep I continuously get at least 35-38 dB of headroom left after sweep, should it be that high? I tried raising the mic's level in Windows to a higher value 100% or 24.5 dB. With this setting the headroom sweep is more inline with what's stated in the guide 5-25dB. Which should I use (mic's level)?
Please excuse my ignorance of this next problem I'm having
I'll try to explain it so it could somehow be understood what's happening. When I click measure that 99dB is present for a split second and the sweep is delayed longer than I think it should be and when it does start it seems like I'm missing the lower frequencies of the measurement, in other words it doesn't cover the full F range for which I configured it to be (15-20000Hz), sometimes I get no output below 200Hz on the graph.
If I repeat the exact same measurement a second time it seems to work just fine. Is there any possible explanation for these queries, sorry for these basic problems. I just don't understand when I take a second measurement with the exact same configuration it's different. I have two UMIKs and tested both and they are working, confirmed by Jerry's test with sensitivity file and RS meter and SG 1000Hz sine wave compared with REW's SPL, they are within 1-2 dB of each other. Thanks again to all who may try to answer this weird problem.