Recent content by Chuck Zwicky

Hi Brad, Johns suggestions seem sound, though nothing definitive was ever discovered. I haven't run any sweeps at those x2 or x4 sample rates in a while, probably a good time to re-test.

Genius..!! That was precisely the issue here. Not only did it not give that error message after many many minutes, when I quit REW, restarted and followed my sequence above, the error appered within 30 seconds. Thank you for your guidance here, John,

20 seconds after the Generator has started. Step by step: 1: Launch REW 2: Confirm I/O assignments 3: Start generator 4: Open "Levels" window 5: Confirm round trip signal on meters 6: ~20 seconds later - error message

I really hope we can get to the bottom of this one. It happens after ~ 20 seconds and shuts off the generator. Nothing has been changed on my end, and the computer isn't changing anything either. Please advise regarding any specific things I can test here to determine where the error is...

The error message "The soundcard did not receive any input data [etc etc]" appears after about 20 seconds after running the generator. It's really annoying in that it shuts off the generator - usually when I am in the middle of an adjustment to the DUT.. I wish the "suppress soundcard...

Here are three bugs that would be nice not to have 'bugging' me: The first one I had reported previously, but here is a video to clarify the mechanism. The generator is started, but the inputs show no signal until the level meters widow is opened: In this one, the soundcard has reported...

Yes, I'm checking the sample rates in REW, in Audio MIDI setup and at the interface driver software. Normally I set the interface first (Audio MIDI setup automatically follows) then I set the sample rate in REW Note: in REW after changing the sample rate, sometimes you need to toggle the I/O...

I had tried different sweep lengths, but no improvement - interesting that it's only happening above 88.2kHz

REW 5.30 Beta 4 MacOS 14.1.1 Mac Mini Intel 6-core i7 I've been frustrated by these strange THD vs Frequency results when testing a variety of interfaces at 96kHz and 192kHz sample rates. I've experimented with different buffer settings in the I/O device settings in the preferences, and with...

Thank you for the replies. The measurement icon was never greyed out like that, and measurements were possible by clicking on it, however, It might have been device related, even though I had only been using the assigned I/O I disconnected an unused interface and it's been working fine since.

5.30 Beta 4: Key Command for Measurement in MacOS "command-M" not working in Sonoma. Was working in Beta 3

John is an exemplar. His knowledge, ability and most of all his sheer generosity has given us one of the most useful and educational tools ever devised.

REW 5.20 RC 6 When making a screenshot the comment alignment is greyyed out when Comment position "On Image" is selected. In a possibly related issue, the comment can obscure the THD window of the RTA, for example:

Thank you John, I'll check those things.

I have run into some anomalous results when performing some simple frequency response sweeps. I restarted REW to see if that would fix the issue, and I tried 2 different interfaces, a Thunderbolt UA Apollo and a USB Arturia AudioFuse. Interface 1 Arturia Audiofuse Studio: 1M sweep 0-22.05kHz...