Recent content by MikeVW

John, Thanks again for the help. The spectrogram was helpful to see the issue. Something clearly got corrupted. I eventually installed the software local and that worked. I then then uninstalled it and reinstalled it as root. It was also time for an operating system update, so I did that as...

John, I found the older versions online and dropped back to 5.19. That works fine. I note only that the older version asks to specify what channel to use as the timing reference. Not sure where to go from here. Mike

John, attached are two mdat files and the associated screen shots for a run of the left speaker with - and without - the acoustic reference timing set. I still have a feeling that something in corrupted, so I went ahead and reinstalled the software a third time. This is a new vision for me. I...

John, Attached is a mdat file with both the timing reference on and off. There is a chip before and after the measurements, but the final chirp is a bit weaker than the first.

John, It would seem that the problem is related to the acoustic timing signal. I don't get an error when there is no timing reference, but I do when I turn the acoustic timing reference on. Any thoughts? Thanks, Mike

John, I got the new MIC and had the same issue. I uninstalled REW and then reinstalled it and that seems to have fixed the problem. Should have done that to start. Oh well!

John, I recorded a test using the mic with GarageBand. It recognized the mic, but didn't ask for a sample rate. I am assuming that it knows the correct rate. In any case, there was echo, dropouts and a garbled recording, so I am thinking it is the mic. I'll get a new mic and go from there...

I just checked my smaller system and now getting the same error. If you don't see an obvious setting problem, I am wondering if the mic has failed.

John, It has worked in the past, but I went in and selected the headphone jack as the output and 48 kHz. I get a similar error. This every odd. I have a system in a smaller room that I set up recently without issue. This room doesn't have excessive reverb, but the delay error makes me wonder...

Thanks for getting back to me. I should mention that I have subwoofer pairs along the front wall and the dipole speakers are about 6 feet out from the front wall.

Folks: I moved into a new home and am in the process of setting up my system. I received an error that I have never seen before. As systems go at the start, there is nothing obviously wrong with the sound, though the room is pretty lively at the moment. Any thoughts on what this means? The...

Thanks Bernard. I snagged it, but I will likely take an hour and browse the book so that I see the context in which they developed it, but being able to search is nice. There is a lot of useful information in old books, but a lot of it gets lost when the pages turn brown.

Andy and Bernard: Thanks for the the reference and the links. This will give me something to read until I can go outside again.

Thanks John. It is more of an intellectual interest in a topic that I hadn't run across before. I should have thought to look at wikipedia. The explanation and references are sufficient to satisfy my curiosity. Mike

John, I wonder if you would recommend a couple of references supporting your minimum phase discussion (Page 57 in V5.19). I find it interesting, but I never ran across a discussion of that topic in any of my physics, math or engineering courses. I'd like to dig a little deeper into the...