Recent content by Audio_Guy_UofW

OK, I think I figured it out. I didn't realize that the generator still had to be running to generate the template...so it was set to the wrong frequency.

Thanks John, makes sense. I have another question. In the attached measurement, which has quite high distortion, the overlay does not appear to be lined up with the fundamental. How can I correct this? Thanks

Hi, I am sure there is a simple explanation, but I am trying to figure out why the CEA2010 peak value reported is so much higher than the RTA spectrum value at the peak. See attached chart. Based on the input levels, I actually would expect that the acoustic peak level would be around that...

I haven't had the wash-out issue in my local IMAX theatres...that is crazy & easily fixed with some light baffles. The sound has been loud...but I wouldn't say any higher SPL than a Dolby theatre. Depends on the film, of course. I always take musicians earplugs and often wear them to moderate...

Todd, interested in what was your issue with IMAX? I enjoyed Pt 1 by the way, although I did find it a bit slow.

Thanks for this Todd! Great analysis of the LFE content. One thought: when you present the FFT...are you able to increase the FFT length, so as to provide better resolution at the lowest frequencies?

Hi, I am using Audacity to capture an REW sweep file pushed to a device under test. I then export this to a WAV file, and import as an audio file into REW. This is a mic measurement, and the scaling/calibration appears off although the frequency response looks right. The mic had been...

Thanks! I was able to recover the measurements, although not the derived curves (|A|/|B|). Still, much better than having to repeat the measurements. I increased the memory allocation to 4 GB...hopefully that will prevent future issues. Thanks for your help!

Hi I just had an unrecoverable crash on 5.20.14. Attached snip shows Java error message. I could not save files, and could not even shut down...had to use task manager to end task. At this point I had about 80 measurements. Most but not all had been saved. I relaunched REW and seems OK...

Looks like a nice cable.

Thanks, my mistake. I was sure I had subtracted the 1kHz value...but not. All good now.

Hi, I have seen an issue with trace arithmetic. As per a previous post, I have been using |A|/|B| to normalize a speaker response. I have been using the most recent Beta to correct for an import error on sweep import. I recently had a crash when trying to save some jpeg images, to the point...

Hi, I am working with offsets to EQ a speaker response, as described in a previous post. Today when I applied an offset to a new curve, the legend display of the SPL was still showing the original value, rather than the value of the offset curve. See attached. I check with a previous offset...

Hi, I am wondering whether there is a record kept/available of SPL offsets applied to a curve? It would be useful to have a record of this, in case you wanted to go back to the original measurement. Thanks

Thanks for this. So just to walk through the procedure, I took a measurement of the speaker at a given position, determined the 1kHz response, subtracted this from the trace to give an EQ curve that was 0 dB at 1kHz, then measured the response at the reference position and used |A|/|B| to...