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m/s micing w/omni?

Discussion in 'Recording' started by osmuir, Jul 25, 2001.

  1. osmuir

    osmuir Guest

    i was talking to this engineer ray [vinyl guy @ sterling mastering], and he told me you could do a m/s config. stereo setup with the cardiod as M and a sideways omni as the S [not a bipolar!]

    i want to try it, but how does it work? phase wise and all that nonesense? how does it sound?

  2. WSpeckmann

    WSpeckmann Guest

    Hi Owen,

    I don't think this will work.
    You need a figure-eight mic to pick up the difference l/r.(l - in phase/r - out of phase)
    Using an omni gives you the same signal for left and right - you'll end up with a perfect mono signal.

    Kind regards
  3. osmuir

    osmuir Guest

    well, that's not what 2 very credible engineers have said [i asked earl cohen last night when he was mixing a project of mine...he said it was really rich]. unfortunately, i have to commit it to tape w/out checking it [i'm gonna mid side it on my console]. maybe the omni does the phase thing w/o null points?



  4. Jon Best

    Jon Best Active Member

    Mar 18, 2001
    I've seen it with an omni as the M mic, and a figure 8 for the sides- that may be what he meant. I don't see how it'd work, otherwise. I have also seen two matched cardioids pointing to the sides, with one polarity flipped. That's basically a figure 8.
  5. dbock

    dbock Guest

    Given the determination with which you speak of "omni fudged side MS", I can only reccomend you try both ways: the traditional MS and the "new" MS. Here is a definition of MS:MS - Mid/Side. Use a single mic, which may be anything from omni to
    hypercardioid, facing forward (mid) and a figure-eight facing to the
    left. Remember that the back lobe of a figure-eight is _out of phase
    by 180 degrees_ from the front. When you add mid plus side, you get a
    left-pointing pickup. When you subtract mid from side (mid plus
    inverted side), you get a right-pointing pickup. If the mid mic is
    cardioid, the resulting left and right signals are cardioid at 90
    degrees. Theoretically the result is the same as XY. In practice, due
    to the limitations of real microphones and the effects they have on
    each other (by physically blocking the other's sound field) MS can
    often produce a purer sound, but requires a high quality figure-8
    mic for the "side" signal.
    You can report back to us the results of your comparison.
  6. WSpeckmann

    WSpeckmann Guest

    You can find a lot of information about stereo recording (m/s - a/b - ortf etc.) and related problems on the schoeps website (http://).
    Look for a brochure 'Mikrofonaufsätze' - sorry, in german only - it's the best stuff I ever read about it !!!

    Kind regards
    Walter :)

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