Posted by Martin [ 64.12.116.65 ] on October 06, 2005 at 19:31:11:

In Reply to: Re: Horn Mouth Diffraction posted by M on October 06, 2005 at 17:05:53:

M,

Looking at the EDGE again I think I was in error. My MathCad worksheets use the same basic math as the EDGE but can handle both rectangular and circular sources and baffles. So modelling a round or rectanguler horn mouth and baffle is easily done. I don't think the EDGE will do those combinations. I used the EDGE as a double check of my algorithm using sample problems.

As far as rounded edges on baffles, I do not believe that exact modelling of this is needed. There are two effects from the baffle, the baffle step as the sound radiated transitions from 4 pi to 2 pi and the sound "scattering" at the edge itself. The second effect produces small wiggles in the SPL plot. I do not believe that these small wiggles are as significant as room effects or the baffle step response. Maybe this is because I use full range drivers that are starting to beam at these same frequencies so the impact of the edge sharpness/radius is minimal.

Thanks for the offer of help with the horn worksheets. At this time I am pursuing a design and test of my own and have decided to hold onto the worksheets and the test results until I decide what I want to make available.

Martin

Replies:

• Re: Horn Mouth Diffraction - M 21:54:19 10/06/05 (0)
• Re: Horn Mouth Diffraction - M 21:40:30 10/06/05 (5)
  • Re: Horn Mouth Diffraction - Martin 06:23:04 10/07/05 (4)
    • Re: Horn Mouth Diffraction - M 08:44:41 10/11/05 (3)
      • Re: Horn Mouth Diffraction - Martin 11:37:47 10/11/05 (2)
        • Re: Horn Mouth Diffraction - M 07:32:42 10/12/05 (0)
        • Re: Horn Mouth Diffraction - roncla 21:32:48 10/11/05 (0)