I'm having a problem with clipping when running REW with my RS SPL meter. This happens mostly with my laptop's internal card, but my desktop has also shown very little headroom...
When I set the levels in REW, the lowest I can get is -12 dB with the RS meter range set at 70 dB, and -14 db with the range set at 80 dB. This is with a reference level of 75 dB (pink noise through REW), set according to the RS meter. The problem, I think, is something with the laptop's audio driver...even with the input volume setting at 0.001 in REW, it sits at -12 or -14 dB.
What I was wondering is if I could set the reference level to 75 dB with the RS meter range at either 70 or 80, then change the range to 100 or 110 and reset the input level and SPL calibration in REW before taking a measurement. This would give me the additional headroom I need, but will the results be accurate??
When I set the levels in REW, the lowest I can get is -12 dB with the RS meter range set at 70 dB, and -14 db with the range set at 80 dB. This is with a reference level of 75 dB (pink noise through REW), set according to the RS meter. The problem, I think, is something with the laptop's audio driver...even with the input volume setting at 0.001 in REW, it sits at -12 or -14 dB.
What I was wondering is if I could set the reference level to 75 dB with the RS meter range at either 70 or 80, then change the range to 100 or 110 and reset the input level and SPL calibration in REW before taking a measurement. This would give me the additional headroom I need, but will the results be accurate??