It would be very nice if we knew specifically. One of those thing swe still have not measured and figured out the exact mechanism.
dave
dave
I've seen a driver or two with painted/otherwise applied rings or pattern (other than enable pattern) to mitigate troublesome resonances. Perhaps it was a CD diaphragm?
I wonder what can be done with a simple ring, of optimal mass, at the right point?
Measurements would surely show the effects of resonances in CSD plots.
I wonder what can be done with a simple ring, of optimal mass, at the right point?
Measurements would surely show the effects of resonances in CSD plots.
The measurements you have done didn't give you any clues? It could be you are increasing dispersion somehow with the dots, have you found or considered that to be an effect?It would be very nice if we knew specifically. One of those thing swe still have not measured and figured out the exact mechanism.
Only tiny inklings. And none to tell us anything about imaging. Macs/analyzers are agnostic to image/soundstage.
dave
dave
Not entirely true, there are some correlations that can be made between measurements and perception even regarding imagery
Not entirely true, there are some correlations that can be made between measurements and perception even regarding imagery
How? Stereo image requires 2 speakers, we only measure one.
dave
You can measure two if you want, you can use one mic at the listening position, you can even use two mics binaurally if you want. The main requirement for best stereo imagery is that the spectral content reaching your ears is the same from both directions, under test conditions of course.
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I think the issue is when you look at a graph for the speaker driver how can you correlate it to listening impressions beyond speaker response. How could one look from microphonic measurements and say that the soundstage is wider and deeper?
And that is why even though I am a technical guy, much of it I really have to depend on ear. The only other measurement I think would be valid for this experiment would be Cumulative Spectral Decay (CSD), that will tell if the damping is better now, but it can't tell specifically that sound has improves. Is detail getting better or worst? Since overdamping will kill details too.
Oon
And that is why even though I am a technical guy, much of it I really have to depend on ear. The only other measurement I think would be valid for this experiment would be Cumulative Spectral Decay (CSD), that will tell if the damping is better now, but it can't tell specifically that sound has improves. Is detail getting better or worst? Since overdamping will kill details too.
Oon
Perhaps a multi tone measurement could reveal an aspect not easily seen on single tone. Just a thought.It would be very nice if we knew specifically. One of those thing swe still have not measured and figured out the exact mechanism.
to Scottjoplin
although my results would be considered purely subjective a group of 8 people unanimously chose a titanium horn diaphragm that was EnABLed!
each participant needed to chose between three 2441 JBL's , one untreated, one with "dots" at a 1/4, 1/2, 3/4 intervals and one with "dots" at the 1/3 and 2/3 intervals of the diaphragms circumference, not sure why but the clear winner was the one treated at 1/3's....
even measures land on nodes which are points where there is little to no motion odd measures land on anti nodes where there is much motion.
hello to Dave glad that you are feeling better hope that this trend continues.
I was pleased to see you name in my post notice :^)
How are you doing? I was thinking of you just the other day.
dave
How are you doing? I was thinking of you just the other day.
dave
I don't think measurements of a single driver is going to tell you about the soundstage, it may give you some idea of how best to implement it in a cabinet and room depending on it's polar response.I think the issue is when you look at a graph for the speaker driver how can you correlate it to listening impressions beyond speaker response. How could one look from microphonic measurements and say that the soundstage is wider and deeper?
Do you think it may be that they have superior perception skills and hearing acuity?Do note that some 10% (Lynn Olsen’s estimate) of people are not capable of forming this stereo image. One could speculate that that is a reletively recent evolutionary adaptation, otherwise these “guys” would probably be tiger food.
No. Not being able to determine which direction the tiger is coming from likely often ended in fatality.
dave
dave
The question wasn't about where the tiger is 🙂 But if you like let's imagine there were two tiger's one on the left and one on the right and they both roared at exactly the same time and volume where would he think the sound was coming from?No. Not being able to determine which direction the tiger is coming from likely often ended in fatality.
dave
The question wasn't about where the tiger is 🙂 But if you like let's imagine there were two tiger's one on the left and one on the right and they both roared at exactly the same time and volume where would he think the sound was coming from?
the question has always been about "where the Tiger Is". Your example is nonsensical you cannot ever have two identical tigers or two identical locations left and right of centre. The answer to your question is that you would know that there were two Tigers one to the left and one to the right and then you would address the next and most important question at that moment being which was the closer and or the easier Tiger to evade. having evaded tiger number one you would then work on evading Tiger number two or writing your will.
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