Recent content by D. Tester

On the Mac, most people who run software have now upgraded to Mojave 10.14 (if not yet Catalina, 10.15). The engineers at Metric Halo (MH) make excellent audio interfaces and write generally good/stable mac drivers. In their current interfaces, they have implemented audio over ethernet (as well...

OK - sorry if I am making a fuss over low signal levels that are not really of consequence. I just want to make sure that I am viewing the scale of the waterfall plots correctly. I've attached a screenshot of the waterfall plots from the 2 measurements in the first file as meas_1.png and...

Thank you John for replying and taking a look. The files were too big to post here because I extended the time for the impulse response. But you can download them via these links, https://drive.google.com/file/d/1eZR0MgddrITQdw24nVj3jX68Eishvsgz/view?usp=sharing 36M...

I'm finding consecutive runs of REW - with no changes to the room, levels or mic position - do not produce the same waterfall plot results (though the SPL and phase plots are always the same). REW is running on Mac OS 10.13.6 with a 4 core i7 chip at 3.2 GHZ base speed using all SSD storage...

Thanks again John for reviewing the traces and the observations about the sample rate and impulse responses. You are right that the interfaces were sometimes set at 2X the sample rate set in REW. I have gotten better results now using the ethernet audio connection with the acoustic signal as...

Thank you John for the reply. I am attaching a .mdat.zip file with traces from the different hardware setups. I ran only single sweeps. The Metric Halo software console that controls the hardware does not allow you to create feedback loops. I set it up so analog 1,2 inputs and 1,2 outputs...

I’ve tried REW with some pro-audio interfaces and Mac OS (with java 1.8). But I am seeing inconsistent results in the high end frequency response form ~10K to 20K (top octave) depending upon the connection type. I will note that the loopback test for both interfaces show the interfaces...