Horn Honk $$ WANTED $$

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Hello,

I refined the wavelet plot a bit to emphasise reflections to make them more visible.

For comparison here's ideal reflections:
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Amplitude scale is as previously:
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Michael's 0 degree Honker:
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Do you see the "quarter wave honk" now? 😀

Michael's 60 degree Honker:
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- Elias
 
Here's jzagaja measurements:

OS waveguide:
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JMLC horn:
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Minphase horn:
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The JMLC and Miniphase share many similarities in reflection patterns. Also they had the same driver, I understood. OS waveguide has very different pattern from the two.


- Elias
 
Hi,

I don't think there is any noise issues. The noise in the IR file should be visible also in the beginning of the plot
in the area indicated here: But there is nothing so it's clean enough for 50dB scale. Everything you see in the plot is due to the speaker (and the room).
An externally hosted image should be here but it was not working when we last tested it.


- Elias


If I crank up the gain, it's noise down at -50 dB, looks like:

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Ealias - I love your new "Skeleton Noddles!" It really does help point up the reflections. And showing it side by side with the fat wavelet is nice.

Thanks for running all those graphs. What I see in them are a few things.
  • Driver makes a difference. See how bad my 802 driver looks compared to the 806 driver on the same horns. The difference is audible.
  • Although the Geddes and JMMLC horns do show reflections at the top, they both show very low magnitude 1st and 2nd reflections. Notice how clean they are in the first millisecond compared to the others. Especially down low.
  • The horns we consider bad tend to have a lot more "junk" on the graph, most notably in the low end and within the 1st mS.

That info was there in the other graphs, but the skeleton noddles really points it out.
 
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