I beg to differ as usual as there are MANY WAYS of building good sounding DML panels. I have around 15 different types of DML designs. Whats funny is when people ask about my designs the first thing that pops into my head is which one?
Actually the chances are very low that someone will eventually use the same technique for the mere fact that most stop/quit at the beginning stages of development and or rely to much on scientific measurements.
The secret technique used for building good sounding DML's is ones EARS!!!!!!!
Thats because you didnt post a video/sound clip of alu dome panels playing. If it sounds good you will get people to try it. Like I said most wont try it if they have never heard it in person and or even through a video/sound clip.
Possibly, but I admit have trouble accepting that listening to a recording of a panel on a set of headphones will reproduce what that panel actually sounds like, so I rarely listen to posted clips..Shrug🤷🤷♀️🤷♂️
I've lost all of my FR curves through a computer reset, so I'll have to do them again
And my panels may not have the same dome result as others, so I was after a wider testing audience
Anyway, back to your panels, are we ever going to see any??
Eucy
Do any of these so called scholarly articles pertain directly to DML technology?
@homeswinghome
The source for the frequency demarcation for low and high frequencies.
https://www.politesi.polimi.it/bitstream/10589/89767/3/Moschini_2014.pdf;vibroacoustic
Around page 49 it discusses it.
The paper that shows a change in upper frequency that you’re asking about is
https://www.extrica.com/article/10418/pdf
If I leave the edges free I always have a higher spl in the upper frequencies compared to when I have the edges covered in rubber.
The source for the frequency demarcation for low and high frequencies.
https://www.politesi.polimi.it/bitstream/10589/89767/3/Moschini_2014.pdf;vibroacoustic
Around page 49 it discusses it.
The paper that shows a change in upper frequency that you’re asking about is
https://www.extrica.com/article/10418/pdf
Ah, I just reread what you were asking. The attenuation for high frequency on damped edge panels is just what I see in the SPL graph.
If I leave the edges free I always have a higher spl in the upper frequencies compared to when I have the edges covered in rubber.
Looking up Poron 92, I see there are many densities available, what density did Eric use, or did I miss that reference?
Eucy
The only true way to know what a loudspeaker sounds like is to listen to it in person. If that is not possible since most of us live far away from each other the next best thing is a recording and the better the recording the better it will sound. Heck all music we play and listen to on our audio components comes from a recording. The only way to hear actual music not from a recording is "LIVE", music.
What does FR curves have to do with posting a vid?
Not asking for others results all we need is your results for others to hear and they can judge for themselves as we are the audience.
Sigh, the same way I cant convince and or force others to post a video/sound clip of there panels playing.
You can get free high density EPS from your local food store as some fruits like grapes are shipped in these EPS containers. Most times they just throw the old containers away.
Not to mention that the carpet enhances the EPS.
On a serious note there are indentions from the letters and smaller circles which need to be sanded down for a flat even surface. I hate sanding EPS as it gets all over you as the fine dust particles can be dangerous if inhaled as it can damage your lungs so a good mask and eye protection is required.
Not to mention that the carpet enhances the EPS.
On a serious note there are indentions from the letters and smaller circles which need to be sanded down for a flat even surface. I hate sanding EPS as it gets all over you as the fine dust particles can be dangerous if inhaled as it can damage your lungs so a good mask and eye protection is required.
You'll most likely disagree, but I view them as a visualisation of an objective listening test, albeit without timbre etc
🤷♂️. When you don't place much stock in a second hand listening test, an FR curve can be something of a guide.
Eucy
An experienced designer will derive more useful information from a decent FR/distortion/impulse/GD response curve than from a cheap cell-phone recording made in a domestic environment of even a pristine recording made in a world-class recording studio. Listen to any cell-phone recording made in a concert hall of a good live performance to prove the point that such recordings are pretty much utterly useless.
Serious designers, listeners and audiophiles will probably never utilise a microphone recording of any kind, of any system to demonstrate speaker sound. It doesn't, and it cannot. The only thing one could possibly demonstrate like that would be slap-back or the reverb tail. Nothing else.
Serious designers, listeners and audiophiles will probably never utilise a microphone recording of any kind, of any system to demonstrate speaker sound. It doesn't, and it cannot. The only thing one could possibly demonstrate like that would be slap-back or the reverb tail. Nothing else.
Sure, but I am not talking about designing I am talking about listening to ones panels since we cant hear it in person the only other way is from a recording.
There have been many serious designers, listeners and audiophiles that have utilized recordings to demonstrate speaker sound its just facts. This is how I know you are not an audiophile, designer, or a serious listener but just a PA listener.
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Even for PA application that sounds horrible.Oh! Oh! ... Here's a fantastic cell-phone recording of my most recent panels. The clarity, detail and imaging are totally indescribable if you can ignore the room sound.
Recording is not another way to listening to speakers, especially not a cell phone recording.Sure, but I am not talking about designing I am talking about listening to ones panels since we cant hear it in person the only other way is from a recording.
There have been many serious designers, listeners and audiophiles that have utilized recordings to demonstrate speaker sound its just facts. This is how I know you are not an audiophile, designer, or a serious listener but just a PA listener.
I'm sure you can find some audiophiles that think that they can convey the quality of their systems via youtube, but at the same time argues about how mp3 completely destroys music and are telling themselves they are able to hear the difference when using a grossly overpriced mains cable for their amp.
I really doubt that anyone I know involved in with audio on at least a semi-professional level could contain their laughter if I wanted to demonstrate how good my speakers sounds from a phone recording, and I would lose any ounce of credibility I might have by even suggesting it as being worthwhile. They are interested in either measurements or actually listening to them in person.
Except for a live band playing the only other way to listen to music is from a recording, unless you know of another method that I dont know about?
and of course the better the recording the better the sound quality....Some audiophiles purchase 10k and above microphones/recorders in which if you were to compare it to the original track it would only have very slight differences as the quality is that good.
Again many serious designers, audiophiles and listeners have done it as its the only other way to hear music without being there in person also without having lost any credibility.
XRK has DONE IT!!!!!! Are you laughing at him Leob?
I doubt he has lost any credibility.
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