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Measurements with ARTA and LIMP - Setup

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  • Pete Basel
    replied
    Re: Measurements with ARTA and LIMP - Setup

    Just wanted a place to put links to these guides for using ARTA:

    Charlie Laub's excellent guide in .pdf format:
    http://audio.claub.net/tutorials/FR%...ing%20ARTA.pdf

    Froste's guide - a bit more complicated than using the 0202:
    https://sites.google.com/site/froste...ta-information

    Leave a comment:


  • Pete Basel
    replied
    Re: Measurements with ARTA and LIMP - Setup

    Originally posted by UGP View Post
    Buy the way is the 0404 or 0202 usb powered? I was looking for one a couple months ago for recording and picked up a focusrite 214 as it is and wanted a portable recording rig, haven't tried it for measurement though
    The 0202 is but it only has one mic input, if you have mic preamps then it should work.

    The line ins are very high gain, some electret condensers might work there, not sure if they are
    powered as some 1/8" jack electrets require.
    I have a pair of small Audio Technica electrets for recording, that are spec'ed to work anywhere
    from 3 to 52V.
    Last edited by Pete Basel; 03-08-2015, 10:57 AM.

    Leave a comment:


  • UGP
    replied
    Re: Measurements with ARTA and LIMP - Setup

    Buy the way is the 0404 or 0202 usb powered? I was looking for one a couple months ago for recording and picked up a focusrite 214 as it is and wanted a portable recording rig, haven't tried it for measurement though

    Leave a comment:


  • UGP
    replied
    Re: Measurements with ARTA and LIMP - Setup

    I've got the 1616m, don't know if it uses the same drivers bit of works fine even in win 8.1

    Leave a comment:


  • Pete Basel
    replied
    Re: Measurements with ARTA and LIMP - Setup

    There is a lot of room for error using these consumer products for audio measurements especially
    because of the fact that they are complex digital systems. This is a good overview of the potential
    problems:
    http://nwavguy.blogspot.ca/2011/02/r...yzer-rmaa.html

    It discusses RMAA but the issues are mostly the same for all such measurement systems.

    Good that the 0202 has clip lights on the front panel.

    Leave a comment:


  • Pete Basel
    started a topic Measurements with ARTA and LIMP - Setup

    Measurements with ARTA and LIMP - Setup

    I just got an E-MU 0202 used on ebay, cheap, well under $100:
    http://www.prodj.com.ua/img/img2b/20...0514134836.jpg

    Gets you headphone out (for speaker T&S and impedance measurements), phantom powered mic in,
    192K sampling, and is portable.

    Measures very well:
    http://www.libinst.com/EMU%200202%20USB.htm

    Quote from Bill's testing:
    http://www.libinst.com/emu0202%20at%...o%20Audpod.PNG
    "This one is looping from the EMU output to its input with just cables (no AudPod in the loop). The EMU 0202 is considerably quieter than the AudPod! Also, the distortion measured without the AudPod was quite a bit lower (I even saw it down to 0.0003% THD at midband, which is insanely low). This is the first card in which I've seen a substantial improvement when going from 16bits to 24bits. When using this in PRAXIS measurements, the AudPod device becomes the limiting factor for both noise and distortion. That doesn't happen often. I'd bet this would be a great recording card."

    There have been some driver issues reported but most say that the Win 7 driver works.
    Still have to set it up and try it.
    Anyone tried one of these with win7 64 bit?

    I've also wondered if the E-MU 0404 is as good as the 0202, it has the advantage of two mic inputs
    which makes it good also, for stereo recording:
    http://www.creative.com/emu/products...aspx?pid=15185

    Looked into the 0404 and found that it uses a "better" DAC Chip the AKM AK4396 but the 0202 measures
    so well that I don't need the 0404 and given that noise and distortion depend so much on implementation
    the 0404 might measure worse. I might try the 0404 for recording someday but for now the 0202 should
    be fine.
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