I was sort of joking when I saw the enclosure. Since you mention it, I would think the little holes in the wavelett 4KHz up would go away if you put on the grill.
Hello,
I refined the wavelet plot a bit to emphasise reflections to make them more visible.
For comparison here's ideal reflections:
Amplitude scale is as previously:
Michael's 0 degree Honker:
Do you see the "quarter wave honk" now? 😀
Michael's 60 degree Honker:
- Elias
I refined the wavelet plot a bit to emphasise reflections to make them more visible.
For comparison here's ideal reflections:
An externally hosted image should be here but it was not working when we last tested it.
Amplitude scale is as previously:
An externally hosted image should be here but it was not working when we last tested it.
Michael's 0 degree Honker:
An externally hosted image should be here but it was not working when we last tested it.
Do you see the "quarter wave honk" now? 😀
Michael's 60 degree Honker:
An externally hosted image should be here but it was not working when we last tested it.
- Elias
Here's Panomaniac's Altec measurements:
I think 811 with 802 does not look very 'clean', what do you think?
- Elias
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
I think 811 with 802 does not look very 'clean', what do you think?
- Elias
Here's EarlK measurement (hopefully memory serves)
- Elias
An externally hosted image should be here but it was not working when we last tested it.
- Elias
Here's jzagaja measurements:
OS waveguide:
JMLC horn:
Minphase horn:
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
OS waveguide:
An externally hosted image should be here but it was not working when we last tested it.
JMLC horn:
An externally hosted image should be here but it was not working when we last tested it.
Minphase horn:
An externally hosted image should be here but it was not working when we last tested it.
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
Here's Jean-Michel's measurement:
If compare this to the jzagaja's JMLC horn, this is much cleaner.
The driver/horn integration seems to have a key role here!?
- Elias
An externally hosted image should be here but it was not working when we last tested it.
If compare this to the jzagaja's JMLC horn, this is much cleaner.
The driver/horn integration seems to have a key role here!?
- Elias
Here's gedlee measurements:
JBL:
Waveguide:
I don't get this waveguide? It's advertised as HOMless, but as far I can see, it has tremendous amount of HOM above 4kHz?
- Elias
JBL:
An externally hosted image should be here but it was not working when we last tested it.
Waveguide:
An externally hosted image should be here but it was not working when we last tested it.
I don't get this waveguide? It's advertised as HOMless, but as far I can see, it has tremendous amount of HOM above 4kHz?
- Elias
Hi Elias,
I've tried to export an impulse from AxiDriver, can you see if it makes any sense with your wavelett tool?
I've tried to export an impulse from AxiDriver, can you see if it makes any sense with your wavelett tool?
I couldn't find the option for WAV. Is there a way to convert text to wave? I could rerun a sim to lower the sampling.
Cool, WAV not obligatory. ASCII will be perfect too. But I hope sampling either 44100 or 48000.
- Elias
Hello Elias,
If I can do a parrallel with image analysis (which is one of the tools I use too) your new graph looks a lot as resulting from a "skeleton" operation.
Topological skeleton - Wikipedia, the free encyclopedia
Best regards from Paris, France
Jean-Michel Le Cléac'h
If I can do a parrallel with image analysis (which is one of the tools I use too) your new graph looks a lot as resulting from a "skeleton" operation.
Topological skeleton - Wikipedia, the free encyclopedia
Best regards from Paris, France
Jean-Michel Le Cléac'h
Great! Could you see if this works?
Hmm, now that I look at it a bit more, seems only 43KHz or so.
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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).
- Elias
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:
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.
That info was there in the other graphs, but the skeleton noddles really points it out.
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.
Nice
😀
If I crank up the gain, it's noise down at -50 dB, looks like:
Here's the full range, crossover's at ~1.5 kHz, MLS gated at 200 Hz:
Here's the impulse:
And the FR:
The waterfall:
The normalized CSD:
SO, how's it SOUND...? 😀
😀- Status
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