Results 1 to 3 of 3

Thread: A Brief Study of Nonlinearities Using Klippel’s SIM Module: Harmonic Distortion

  1. #1
    Tester Extraordinaire ErinH's Avatar
    Join Date
    Aug 2010

    A Brief Study of Nonlinearities Using Klippel’s SIM Module: Harmonic Distortion

    I have set out to do my best to help us all understand just what these dang measurements mean. My first step is to use the SIM module from Klippel to simulate various changes in a driver's design to see what happens in the nonlinear domain.

    I have just completed the suspension portion of my harmonic distortion study. I plan to complete Bl(X) and Le(X) and then move on to Intermodulated Distortion Simulations. This may take me a while to complete and it will never be the definitive source for knowledge BUT it's a good start and a strong step in the direction to improving all our understanding (those of us who don't do this for a living).

    Here's the link:
    A Brief Study of Nonlinearities Using Klippel’s SIM Module: Harmonic Distortion | Medley's Musings

    I just put in about 5 hours on this. I've read over it about 5 times already but I'm beyond tired and may have missed a few things.

    - Erin

    PS: There is a contribute button at the bottom of the page. If you want to buy me some 5 hour energy drinks, feel free to contribute. ;)
    Your ears: The best tools you have... and they're free, too!

  2. #2
    Senior Member
    Join Date
    Jun 2012
    Visalia, CA
    Real Name
    Good read. I'll have some questions later after I think some more, but for now, I'm looking forward to the Bl tests.

  3. #3
    Devil's Advocate Adam_MSS's Avatar
    Join Date
    Aug 2010
    Real Name
    So poor QC resulting in a suspension offset and asymmetrical stiffness would likely get reasonable subjective reviews for being warm.

    Take a more symmetrical driver with lower overall distortion and it might fare worse subjectively because third order is more offensive and it wouldn't be masked by 2nd order.

    Lends some credence to te contention that THD is meaningless and that a weighted distortion metric is a better alternative. It would be interesting to see a manufacturer consider data like this. I'm sure it would guide some decisions around cost and potential target markets.
    You don't use science to show that you're right, you use science to become right. - R.Munroe

    The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them. - W.L.Bragg


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts