Need a measurment software for freq and THD

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  • peterS
    Super Senior Member
    • Dec 2005
    • 1038

    Need a measurment software for freq and THD

    tried the lspLAB demo and its completely useless since its resoulution is so bad

    dont know how much it costs but I dont like how the THD graph is just a summed percentage

    does anyone else have suggestions- as I cannot figure out speaker workshop at all (thats why its free I guess)
  • Dennis H
    Ultra Senior Member
    • Aug 2002
    • 3798

    #2

    Comment

    • peterS
      Super Senior Member
      • Dec 2005
      • 1038

      #3
      for some reasons my CSD graphs are coming out strange
      any ideas?

      Click image for larger version

Name:	CSD.webp
Views:	40
Size:	63.3 KB
ID:	943911
      Last edited by theSven; 03 July 2023, 23:15 Monday. Reason: Update image location

      Comment

      • Paul Ebert
        Senior Member
        • May 2004
        • 434

        #4
        might your gating be set to 2.50 ms? just a guess on my part.

        Comment

        • peterS
          Super Senior Member
          • Dec 2005
          • 1038

          #5
          well i got it to work the first time since then everything is like what you see above - i have even reinstalled the program to undo whatever I may have done
          (cds on top of the speaker)

          Click image for larger version

Name:	CSD2.webp
Views:	40
Size:	36.1 KB
ID:	943912
          Last edited by theSven; 03 July 2023, 23:16 Monday. Reason: Update image location

          Comment

          • mazurek
            Senior Member
            • Mar 2006
            • 204

            #6
            I believe you need to tell it what the offset is to the start of the impulse response, or null the offset delay and place the start marker well before the start of the impulse response.

            Comment

            • peterS
              Super Senior Member
              • Dec 2005
              • 1038

              #7
              Originally posted by mazurek
              I believe you need to tell it what the offset is to the start of the impulse response, or null the offset delay and place the start marker well before the start of the impulse response.
              OH MY
              thank you very much!


              this is a really cool program by the way :T

              Comment

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