Just 10' back home from visiting this studio. (> 4400 miles) I spend the whole Sunday with George Massenburg in this studio, with the owner of another huge studio complex, listening, experimenting. Recordings made by George himself, and others by this other studio, mixed and very well known by the this other studio owner (audio engineer and pro musician) as well in his control as mastering room. Quiet amazing ...... Even more amazing is George Massenburg himself. A gentle, warm extremely intelligent individual I can only respect a lot, a very great lot. A real and genuine person ...... I never could expect that such a large collection of mics and gear could exist. One can really start a museum with everything available in the Blackbird Studios. It seems endless. It goes from top gear/mics many decades back (real rare collectors items) to the most recent stuff. I also underestimated George's part in the design of this studio. He specially studied numbers theory and primes in function of diffision and experimented with it on smaller scales. He calculated this whole stuff (saw the Excel files), and checked/discussed it with Dr. Peter D'Antonio. Special software (making AutoCAD a cheap program) was needed and purchased to convert this Excel data to Cad-Cam software for a numerical milling machine to convert this Excel data into production software. Not 1 of the 1532 milled 1" MDF boards is equal to one another. (and that's only for those wall diffusers/absorbers). Hence that means 1532 boards had to be programmed for production (done by this special software). Starting from 90 tons of MDF, it ended with 40 tons finished (didn't check those numbers). As one could expected detailed data will not be made public (at least for now and is certainly not up to me). Hence I can't share my real experiences. Still trouble with Jet lag (7 hours time diff.) and very tired. Must sleep now. In function of the title of this topic. :) One can hardly call this a DIY studio.But I should love to see, feel and hear it.
DIY Massenberg Studio?
Originally posted at johnlsayers.com, topic 6176.
Really cool that you got to experience that, Eric; I'd heard similar comments from others who have met George.
Maybe instead of "DIY" we could call this "DIE" - as in, "Do It Expensively"... :wink: Steve
:mrgreen: :)
PS: I had no idea yet that I ever should be invited or be there when saying before that I should like to see, feel and hear that studio. :wink: I'm just a spoiled guy, I suppose .....
Niether are mine. And mine are HARDWOODS!! :wink: fitZNot 1 of the 1532 milled 1" MDF boards is equal to one another.
Eric showed me a paper about this impressive studio and the benefits of using such deep diffusers...this ambisonic
I think DIY something like this would requite at very large space. The only material I can think of that could replace wood is expanded polystyrene.
You can indeed built very cheap Skyline with it but it gives a a hell amount of work to do so (someone I know build one for 50 €).
Nice pictures !
To make you work even harder why not making each one of the pieces of wood with different thickness ? :lol: :lol: You can call it the chaotic diffuser after it's built !
Well, just to bring it up to date, here is my quasi Massenberg skyline at the rear wall "plan". BTW, if Massenberg had slabs of MDF machined on a CNC, who hand cut out the radius's from the router bit at the bottom of the wells. Must have taken a shitload of time. :lol:
fitZ
That's correct. Massenberg's whole studio is 1 or whatever periods with theoretically 1) on the walls 138,240 block heights 2) On the ceiling 24,336 block heights Hence, not 4 or 8 block heights This number is of course limited by production tolerance limits. But that's how they were automatically programmed for the CNC (special custom adjusted software to convert Excel data in usable CNC programs) That made 1,532 8'x 4' MDF sheets, every single one with its own program (not one is identical)...... here is my quasi Massenberg skyline
So what. ? Are you implying that 1 period with x number of elements are percieved on a record better than 2 or 4 or 8 periods. It is ONLY the ear of the producer or engineer that is wearing the Kings invisible clothing.Massenberg's whole studio is 1 or whatever periods
BTW, you still didn't answer my question about the router bit radius at EACH turn in the machinging. In a 1" well, and a 1/2" shank router bit, that would mean the bottom of the well would be a FOCUSED reverse poly. Smoke that one.
I'm implying that you use 4 block heights (maybe combine them with a future other additional 4, therefore I said 4 of 8 ). What you drafted are 4 block heights covering 162 to 2845 Hz (I wonder if you know how and if these ratios work), to be compared with the theoretical > 160,000 block heights (to be adjusted to production tolerance) in the Massenburg studio.So what. ? Are you implying that 1 period with x number of elements are percieved on a record better than 2 or 4 or 8 periods. It is ONLY the ear of the producer or engineer that is wearing the Kings invisible clothing.Massenberg's whole studio is 1 or whatever periods
That radius of the bit is only to be counted 50% of its diameter and that shape (partly flat) doesn't do a thing wrong in that design (wavelength versus obstacle). You assume a problem which isn't one at all. You call it quasi Massenburg. And I said you're correct. They both look like pin-cushions. The Massenburg studio is calculated and designed in co-operation with Peter D'Antonio, the inventor of the design principles you quasi used/copied. And this project was preceded by more smaller scale diffusers made by Massenburg over a long period. Massenburg learned these principles via D'Antonio many years before plans for this studio existed. I'm humble enough to assume both knew what they did. And I've heard that existing one. At least I know that one works. But I indeed gladly admit you made nice looking & technically quality diffusors. But I wonder in how far they behave as healthy diffusers.BTW, you still didn't answer my question about the router bit radius at EACH turn in the machinging. In a 1" well, and a 1/2" shank router bit, that would mean the bottom of the well would be a FOCUSED reverse poly. Smoke that one.
Hello Eric. Thank you for your reply.
I haven't got a clue if they "work" In fact, that is EXACTLY what I asked here(fourth page) http://onlineacoustics.com/onlineacoust ... ?topic=7.0 I did NOT invent nor claim this sequence actually works. On the contrary, if you read my questions to andredebrito, this is exactly what I was trying to find out. ESPECIALLY when the author of the "calculator" http://www.mhsoft.nl/DiffusorCalculator.html stated ..."A single diffuser always consists of a prime number of stripes, for example 7,11,13, … .(stripes meaning ONE period) when in fact the illustration CLEARLY shows a period using TWELVE "blocks", or whatever you want to call them. I call them the WELLS. For what its worth, I'm ONLY trying to find out the best treatment OPTION for my particular room and conditions of the rear wall available space(overall size and depth). Heck, I even used some of YOUR advised options within the context of other designs(i.e. "superchunks) Please be aware I have NOT built ANYTHING yet. I'm still trying to finalize exactly WHAT it is I am going to build. Hence my thread at andredebritos' site. Heck, I would have posted that thread at Studiotits, but since I have been removed as a member, I posted it where I could. I probably should have posted it here, but.....hindsight is 20/20. Anyway, time for work, and my apology to the author of this thread for hijacking it. Time to move on. Although, I DO have my "own thoughts" on GM's room. Like using 90 tons of MDF and 60% of a rooms available space to build something that NO tests have been published on, seems pretty farfetched to me. fitz(I wonder if you know how and if these ratios work)