Blackboard is easier to light for video than a white board.

Great to hear! Tell us more about your project.

"They look cool" is a popular response I receive when I ask people why they put diffusers here or there. They "look" even cooler when the technology is applied in the proper position and work correctly. Funny thing happens. People forget about "cool look" and focus more on sound quality which is the technologies objective. Humans are a funny lot.

Focus on the absorption requirements of the room first. You must have many acoustic variables satisfied prior to introducing diffusion. The next variable is distamce from diffuser along with usage.

@@AcousticFields I don’t have a room at the moment, been living as an underemployed refugee in my mom’s basement, with most of my speakers in storage. I have about 6, 24”x24”x3” polyurethane foam pieces I scrounged from a recycle bin. Which I may double up for 6” thickness to get broader spectrum absorption, and across less surface area to not over treat my next space. I’m really thinking of building a listening room/living room hybrid, going all in from the get go with new home construction or renovation. I know your charcoal is much better, than the polyurethane but my thoughts aren’t even about using what I have, but how to engineer the optimal space. I find allot of joy in the hobby of design, and in the science of sound, and geometry, and the optimal tuning of things. I’m more entranced by learning about sound than by actually listening to music, which I rarely do these days. Most of my listening is podcasts and youtube, which is probably not what most think of listening to when they think of an audiophile. So I ask from acoustic curiosity rather than for immediate application in my non existent listening space. I’m very interested in understanding the logical reasoning of prime numbers and the frequencies chosen for the wells. I’ve really learned allot about the low end pressure component of acoustics from your recent videos and it’s truly expanded my understanding from where it was even a few weeks ago. So thanks for that. Anyway, feel free to go at your own leisure with your content, but if you put out some more stuff on the well tuning I’d enjoy that. Thanks :)

Glad it was helpful!

Proper room volume along with proper type, amount, and placement of low frequency treatment.

The production costs for this process would not be cost effective in a video format.

Reserach the modulus n formula. You will find your answer there.

But the modulus n formula deremintes the depth proportion between each wells, when it comes I've seen here and something like lambda over 2 which is the wavelength, but what wavelength are we talking the one correlated with the design frequency (like 1000hz) or the one that results with specific well depth (like 3300hz or 880hz...)

@@Georges-rp1qi Quadratics have their highest response at 3,450 hz.

Thank you for your continual support and following.

Glad you enjoyed it