i recently downloaded ARTA to use in conjunction with REW to measure tweak my system, but i've noticed a strong rolloff on the HF spectrum, see attached image of an IMD test i was trying out. we see at ~8khz there is significant rolloff, and after testing frequencies above 10khz, ARTA appears to be gathering no data above that point. evidently i have a noisy room/measuring system, as evidenced by the lower frequency range, but i was expecting more bandwidth than that.
ARTA was set to 48khz sample rate, so we shouldn't have any issues on that front. apart from that, i do get full bandwidth response on REW, which measures as expected out to 20khz. i'm on windows, using standard motherboard audio on my desktop. the mic is a USB minidsp umik-1.
ARTA was set to 48khz sample rate, so we shouldn't have any issues on that front. apart from that, i do get full bandwidth response on REW, which measures as expected out to 20khz. i'm on windows, using standard motherboard audio on my desktop. the mic is a USB minidsp umik-1.
