I finally got everything I needed to go through the measuring process of the Inguz Audio DRC software and unfortunately my results were dissappointing.
I'm using a Tascam US-122 audio interface, with the recommended Behringer Mic. I setup according to the Inguz audio web site, and the first thing I found was after adjusting the SB volume to get the analog output Db measure on Audacity to around -6 Db, the amp volume output was reduced to the point that even at 100% max volume, the sound was only at a high listening level (maybe around 80 Db on my Radio Shack sound pressure meter instead of 110 Db as I would expect). Anyway, I wasn't that concerned because the volume was loud enough to take measurements and I wouldn't have wanted it any louder anyway for fear of damaging the speaker tweeters. Initially I couldn't even see the sound level register on Audacity through the Mic. The analog output was still nice and high, around -6 db, but the mic output was "flatlining" in Audacity. So I turned the recording level all the way up on the audio interface (and confirmed my computer sound level wasn't impacting the recording) and then finally saw the mic output register on Audacity, but still much lower than the analog output from the SqueezeBox. So I reduced the Squeezebox volume to match output levels with the mic, which I was able to do, but had both levels now at around -15 Db from -6 initially. So I took 3 measures from the left and 3 measures from the right. Everything seemed to go well and I cancelled any measures that had outside/environment noise (dogs, cars, sane people who are content with big box stores, etc.) and felt pretty good about my measures when finished. The rest of the process seemed to go smoothly. The only changes I made to the DRC config files was change the MCPointsFile to ecm8000.txt. I didn't even change the Target Response stage to flat.txt or any other files - I left as bk-3-spline.txt as was defaulted in the config file. Should I expect better results with a different target response file? My results were so bad I decided something else must be wrong, but maybe it's the config file. I also made sure Audacity was recording in Stereo and set the default sample format to 32-bit float. So I created my filters and put them in the correct folder and noticed a change in sound when using the filters so something is definitely happening. Then I used my Radio Shack sound pressure meter again and took measurements with and without room correction the results with all levels of room correction were all over the place. Huge variations in sound levels across the frequency range, as compared with a respectable measure without room correction. One thing I noticed is that the EQ plugin always has to have one of the EQ options checked - 2 band (bass/treble in my case) along with my room correction (strong/normal/soft/None) option checked. Is that normal? Any suggestions are really appreciated. It's been enjoyable to play around with this hardware and software, but with the time and cost of the measuring equipment I'm certainly hoping to get some better results if possible. I'm also interested to know now that I have the Behringer mic and audio interface what tools I can use to get a better frequency response measurement than my Radio Shack sound pressure meter. Thanks again in advance for any help and advice! -Dave -- daveellison ------------------------------------------------------------------------ daveellison's Profile: http://forums.slimdevices.com/member.php?userid=8744 View this thread: http://forums.slimdevices.com/showthread.php?t=31119 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
