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AFMG Network Forum Index -> AFMG EASERA -> Artifacts at end of IR    View previous topic :: View next topic  Artifacts at end of IR Posted: Mon Sep 05, 2005 1:16 pm montesound Member   Joined: 05 Sep 2005 Posts: 11 There are some artifacts at the end of the IR when I measure with Easera. I can window them out with a rectangular window but my RT still does not display correctly. If I save the file as a .wave file, open it in a wave editor, delete the artifacts, and then reopen it in Easera the RT is correct. Artifacts: http://img102.imageshack.us/my.php?image=easera00015vm.jpg Incorrect RT (windowed in Easera): http://img366.imageshack.us/my.php?image=easera00025pm.jpg I am using Windows XP, IBM Thinkpad, Digigram VXpocket V2 PC Card Amos Posted: Mon Sep 05, 2005 2:07 pm Stefan Member   Joined: 19 Apr 2005 Posts: 167 Location: Berlin, Germany Hi Amos, the artifacts that you see look like clipping effects. Make sure that neither the input or output are clipping. It is recommendable to be 6-10 dB below AD or DA threshold. However, this does not explain the "overshooting" noise compensation when calculating the RT. Which version of EASERA do you use? Have you already upgraded to 1.0.50? Stefan Posted: Mon Sep 05, 2005 2:16 pm montesound Member   Joined: 05 Sep 2005 Posts: 11 Hi Stefan, Yes, I am using version 1.0.50. I also tried noise comp. on and off. Neither gave the results that I was expecting. Sometimes it will also give me a different scale after I edit in the wave editor. It doesn't seem to matter what format I save it in when working in Easera. I would be glad to mail you an IR if you need one. Amos Posted: Mon Sep 05, 2005 5:33 pm Stefan Member   Joined: 19 Apr 2005 Posts: 167 Location: Berlin, Germany Hi Amos, yes, please send the files. Possibly those two that belong to the pictures above. Also, consider calling the Renkus-Heinz support team, they will be happy to assist you in any case. Thanks, Stefan Posted: Tue Jan 17, 2006 8:12 pm Gordon Prier Member   Joined: 12 Aug 2005 Posts: 1 Location: Christchurch New Zealand HI, I too have been experiencing this situation. I have been watching for clipping and check headroom before recording a sweep. Some of the T30 times reach very unbelievalbly long times. _________________ Gordon Prier Christchurch New Zealand Posted: Mon Jan 30, 2006 5:55 pm montesound Member   Joined: 05 Sep 2005 Posts: 11 Hi Gordon, Are you generating the sweep with Easera? The output on my Digigram VXpocket V2 PC Card clips very soon when using the ASIO drivers and I must watch it very carefully. I understand that the next version to be released should help correct the T30 calculation as well. Here is portion of a reply from Waldemar Richert, SDA which may be helpful to you. But for the meanwhile: To work with your 1.00.50 and those files, please apply the following procedure: 1) set the left marker at 0ms and the right marker at approximately 20ms ( ~20ms left of the start of the impuls) 2) click “Edit” menu 3) click “Cyclic Move” 4) click “Cyclic Move (Right Marker to Left Marker) 5) click [OK] button in the “Editing” Window 6) set the right marker at approximately 1sec 7) click “Edit” menu click “Create New File From Marker Area” Now you got an IR which can be saved and which will behave well in 1.00.50-postprocessing. Best Regards, Amos AFMG Network Forum Index -> AFMG EASERA You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum General----------------Board RulesForum Announcements Software Forums----------------EASE 5EASE 4EASE EvacAFMG EASERAAFMG SysTuneAFMG SoundFlowAFMG ReflexEASE FocusEASE AddressSDK for GLL PLug-in API   Powered by phpBB © 2001-2003 phpBB Group Theme created by Vjacheslav Trushkin Variation by CodeWeavers and AFMG