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USB Port Test - Focusrite Scarlett 2i4

Discussion in 'Audio Science' started by Luckbad, Sep 17, 2017.

  1. Luckbad

    Luckbad Traded in a unicorn for a Corolla

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    This is a test I performed a couple of years ago. I swore up and down that some of my USB ports were total crap with my Scarlett 2i4, so I did some measurements out of every USB port I had on my motherboard at the time.

    While it's mostly not very useful, one port did emerge as clearly better than all the rest. And it was repeatable.

    Thought this might be a fun distraction for 3 minutes.

    RightMark Audio Analyzer test

    Testing chain: External loopback (line-out - line-in)
    Sampling mode: 16-bit, 96 kHz

    Summary
    summary.PNG


    Frequency response
    fr.png

    Noise level
    ns.png

    Dynamic range
    dr.png

    THD + Noise (at -3 dB FS)
    thd.png

    Intermodulation distortion
    imd.png

    Stereo crosstalk
    ct.png
     
    Luckbad, Sep 17, 2017
    #1
  2. Armaegis

    Armaegis Friend

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    Bottom-Left also seems to be an odd FR outlier. Is it discernible if you expand the scale of the FR charts and separate the three reds?
     
    Armaegis, Sep 18, 2017
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  3. Grahad2

    Grahad2 Red eyes from too much anime

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    What motherboard is that?
     
    Grahad2, Sep 18, 2017
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  4. Luckbad

    Luckbad Traded in a unicorn for a Corolla

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    I believe this was on my ASUS P8Z68-V PRO motherboard based on the timeframe.

    I can try to get Rightmark installed on Windows 10 but I was having issues (would need it to zoom properly). Will try tonight.
     
    Luckbad, Sep 18, 2017
    #4

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