And I think you deliberately twist around definitions and concepts to suite your needs, never giving an inch to an argument. It seems like you think that repeating something enough times will make it true.
As I said ALL sources have a 9 dB DI in a corner - so what - its meaningless.
Wayne Parham Messages: 18726 Registered: January 2001
Illuminati (33rd Degree)
By that argument, all DI increases from waveguides would be meaningless. A sound source radiating from the apex of a trihedral boundary is a CD source, one having of the most purely constant directivity you can find. It is quite literally a large waveguide with radiation angle defined by the walls.
If you splay two axisymmetric horns, wouldn't you get massive comb filtering? I've never tried this, but I assumed that the frequency response would be practically unusable.
As you know, I use horns and waveguides in cars, and in this environment, vertical size is severely limited.
I've considered oblate bispheroidal as well, but assumed that it would suffer from the same comb filtering. And OBS waveguides are all but undocumented.
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