Massdrop x E-MU Purpleheart Measurements

Discussion in 'Headphone Measurements' started by purr1n, Dec 18, 2016.

  1. CEE TEE

    CEE TEE Free Agent

    Staff Member Friend IEMW
    Sep 25, 2015
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    California Bay Area (San Francisco)
    Oh man- I forgot! Yes, @Bill-P recommended those...seems like forever ago. Props to Bill-P! Thanks, @Elmer Danilovich
    Elmer Danilovich likes this.
  2. Vtory

    Vtory Illogical Spock

    Friend MZR
    Sep 12, 2016
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    This is the follow up from the previous measurement post.

    I thought this comment made a lot of sense. There's no way to let down his kindness. And personally I got curious about how responses would change.


    First I examined how the response changed across different wearing style. Over-ear style means fitting pads around ears. I personally don't like it because my ears are too big to put in the quite small opening of PH. There's an interesting trade off between lows and highs: Low end extended well but but 6-8k hz treble recessed a lot.


    Then I tried to investigate the leakage effect by using two different kinds of rubber bands (strong and weak). There is a clear tendency: the stronger clamping, the better bass extension.


    Finally I tested how this weaker rubber band affected on-ear style (I didn't want to use stronger one because it pushed too much). The rubber band played almost the same role here. More relative gain at 800 hz and below.

    So, which result(s) is the closest to my perception? 1/3 octave warble tones were used to test this. Also Aeolus used as a control (to adjust against equal-loudness effect across frequency).

    1. With on-ear style, I think my loudness perception is closer to the measurement with a (weaker) rubber band. I might find a better seal on the real head than on the EARS.

    2. However, for over-ear uses, I don't hear as much bass as either type of rubber band results. A little imperfect seal and driver-ear distance of no-band case approximates my wearing better.

    PS. Every result is normalized at 3k hz, as the peak there seems invariant across test situations.
    Last edited: Nov 8, 2019
    Jinxy245 and Sqveak like this.

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