In the picture below you can see the the frequency plot of my listeningposition. You will realize the heavy dip at 140hz which is the floor reflection. speaker hight is 1,3m distance to ear is 1,85m. difference between direct path and reflected path is 1,2m which gives me the 180
I am not dead!!!! Things are moving slowly, but they are moving. It ist hard to build a Studio alone without any help, and go to the regular job beside this build. It is a one man Studiobuild.
Still not finished, but ready to hear a littlebit music while working.
Here are some bad cellphone pics:
cheers Mika
Mika,
Welcome back.. I bet your floor reflection is gone with all that 'desk' in place now... is it not??
of course.. there's always the new set of shorter reflections off the desk, right....
FM
franman wrote on Thu, 01 April 2010 22:27 | of course.. there's always the new set of shorter reflections off the desk, right....
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"Didn't we talk about not using a Boss Flanger on the guitars?"
Keep the good work Mika! Soon there!
Yes Fran. The dip is gone. i moved the istening position a bit to the back, turned the speaker, so now the woffer is up and the tweeter down, what gives me better conditions in case of desk refections. And the tweeter is now more at ear higth. The acoustic center of the speaker is now exactly at earhight.
I still have some problems with modal ringing under 200hz down to subbass. I added 6x Helmholtzresos (10dm
We always use lots of internal damping in Helmholtz resonators... The Q is too sharp without this. I don't think you can have too many of this type of trap. They should not re-introduce any tone into the room. They should only smooth low frequency decay (ringing) and bring the perceived bass out into the room. You are operating in the upper range of where I would typically use this type of trap but it's ok... Membrane traps are fine as well, but you need a significant amount of surface area to get enough sabines into the room IMO..
Thanks for this info Fran. Yes i think i will bring in some more Helmholtz Absorbers. When i want to calculate the sabines for a helmholtz absorber, is this just the port Area of the resonator what matters? Or resonatorport plus mouthcorection?
Is it more efficent to have many small resonators, or some bigger ones. i think more smaller ones, because the port area is bigger.
I am still struggeling with the 100hz celling to floor mode. i think i have to angel my cloud and ad a rigid back!? But i will wait until my subwoofer arrives. i hope that the woffer fills this dip a little.
I will keep you updated great forum cheers Mika
Hey freinds some pics from todays work on the backwall of the CR. Sorry for the bad cellphone pics
cheers Mika
Well done
Thank you Thomas
Can you say something to the idea to break up the cellig/floor mode with angel the cloud and add a rigid back?
The cloud is about 2m wide and 1,7m long 30cm thick, filled with 5kPa Isover TP1. I could angel the cloud about 15
The problems will be:
- Is there a sufficient area to play with - Is there enough thickness / density in your 'rigid back' and what's the realtive distance to the real ceiling - Is it the right treatment
The cloud is about 2m X 1,7m but shaped. I have some leftover 10mm MDF which i could place at the back of the cloud. The distance now is about 30cm top of cloud to cellig (no angel) when i angel the cloud the frontside could come down to 50cm distance between rigid back and celling. the null is around 105hz
useful plan , or waste of time?
cheers mika
Yeahhhhhh Subwoofer and EQ arrived today. A Yamaha SW 10 So i placed the sub very rough, and played with some EQ to reduce some peaks caused by flushmounting the speakers.
New Freqeuncy plot looks realy good to me. There is 1/24 smoothing,so this is the truth
What do you think? continue to optimize, or accept it like it is?
cheers Mika
Looks really good indeed.
Much better than a lot of bigger studios out there!
Good job!
Quote: | Looks really good indeed.
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Thank you
Quote: | Much better than a lot of bigger studios out there!
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Realy? I never visit a "real" Studio. It would be intressting to do this one time to hear another place, than my builded places.
What about your Project in D
Mika,
That looks slammin indeed!! How does it sound?? Depending on the speakers, the HF rolloff is a subjective thing based on taste, but the midrange and LF are better than many if not most that I measure....
FM
Hey Fran Thanks for your comment. I would be intrested of a meassurement of a professional build room about 25m
Constantin wrote on Sun, 18 April 2010 05:16 | Hey Fran Thanks for your comment. I would be intrested of a meassurement of a professional buld room about 25m
Thanks Thomas
It is not nessesary to link a measurement to a specific studio. i am just intressted about a typical curve of frequency and reverbation in the lows, of some professional designrd and build studios.
i never learned acoustic, i just read books, and in the internet. so i have only my experience, and nothing to compare my results.
I don`t know where i am in the moment, so other measurments are a good guideline for finding out . cheers mika
Hi folks!
Would love to see some graphs as well. Especially time response graphs.
Mika, do you think you could post an energy time curve showing the first 200ms or so of your room?
Here's mine a few weeks ago: http://www.gearslutz.com/board/studio-building-acoustics/481 797-lede-room-haas-trigger.html Specular Haas trigger to be replaced with more suitable diffusers, more reflections to be had overall, and so on. A work in progress. It will at least give the general idea of where it's heading.
Cheers,
Andreas Nordenstam
Hi Andreas I can only offer an old ETC since REQ don`t work anymore on my Laptop, for some unknown reasons (maybe a JAVA update??) ARTA don`t offer ETC in Free Version so here is the old measurement. The 5 ms peak is a old desk reflection which is not present anymore, and this measurment miss the perforated MDF housing of the rear Basstrap soffit, so only the the 3 little QRD`S give the impulse at 16,5 ms IDT Gap is now 16,5ms without that deskreflection, or better said with less deskreflektion.
cheers Mika
Here's one. This was measured with a high sound pressure in the room.
I will not post ETCs because they are giving away too much info about how our rooms work.
This graph is pretty representative of what a bigger room with a big console (3.60/1.20m in size) can respond like.
The console usually messes things up pretty badly in the MF / HF, so we tend to preemptively compensate for it... *When possible*.
The consoles with the 'back' going all the way down to the floor (like some NEVE for ex) are also giving us quite a few headaches in the LF.
wow, that looks realy flat How big was that room? over 30m
Thomas Jouanjean wrote on Thu, 22 April 2010 08:31 | Here's one. This was measured with a high sound pressure in the room.
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Any EQ in the chain?
GR
Constantin wrote on Thu, 22 April 2010 10:48 | wow, that looks realy flat How big was that room? over 30m
Greg Reierson wrote on Thu, 22 April 2010 11:37 |
Thomas Jouanjean wrote on Thu, 22 April 2010 08:31 | Here's one. This was measured with a high sound pressure in the room.
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Any EQ in the chain?
GR
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These are tri-amped speakers and we played with the level of each amp (LF, MF, HF) to have an overall balanced response. It was a bit 'curved' in the MF IIRC, so we added a bit of that. How much I don't remember.
Quote: | This room is on the big side. About 42m
Constantin wrote on Thu, 22 April 2010 12:42 |
Another question: do you see any big problems with the peak in my ETC at 5 ms? i reduced it about 5 db, but it is still there.
cheers Mika
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I think at this point in your project you should just listen. Numbers are important and you do well in keeping an eye on them and using them to get your room to the next level.
But now it's time to let your ears be the final judge.
Forget the ETC for now and sit down a bit, have a coffee and enjoy your nice work
Do you like what you hear? Do you have a nice depth, stereo image, no particular sign of freq problems?
From what you say, I would say that all this seems fine and the numbers you show are very good.
So... Do some projects now! See how your mixes translate! If you feel something is wrong after a while, then go back to your drawing desk.
It's your own place. Take it easy
Thanks for reply Thomas
I would enjoy to listen my new room, but in the moment i am in Hospital, so i have only the numbers to play with. I just try to use the time here as much as possible, since my working time is very limited because of my helathproblems since 2008
Only good thing, is, that i have much time to read and learn.
cheers Mika
Sorry for no updates, but i spent all my time in hospitals, so i can`t work in the studio.
But i have some questions about the aircondition i plan to install.
I need to place the compressorunit of the doublesplit system on the roof over my recordingroom. It is not allowed to install it at the outside wall. So i need a good decoupling from the roof. What is the typical naturalfrequency of a decoupled compressorunit?
i don`t know if i can easy go the agglomer way, since i have alot of this material in my storage, and i have no money to buy some additional sylomer. My idea is to place some concrete blocks over Agglomer on the roof, and mount the compressor unit on top of this foundation.
The question is: how much lowfreqeuncy isolation of this unit is needed? Any experience with this?
cheers constantin
There are no big news until now, but here are some before/after shots of the small recording room/vocal booth. Not finished jet, but short before ready for use
View 1 in 3 building steps: 1.
2.
3a
3b
View 2 1.
2.
3.
and the view into the control room:
i hope to be able to continue the work in 2 weeks, when i leave the hospital
cheers constantin
Some better pics of the Control Room, where you can see the right colours and feel the vibe of the room.
I will make some mire pics, when i cleand the room, and install equipment. cheers
Still not finished, but ready to soldering and wirering
The controlroom:
view into vocal booth:
back of controlroom
view from vocal booth into controlroom:
inside the vocalbooth with view to emergency exit
i hope you can enjoy the flavour of the studio
cheers Constantin
and here are some pics from the small recordingroom/Vocalbooth:
The is still one cloud with LED spots inside missing, which will take place at the celling, over the guitar from the door to the Patchbay. This is the reason, why there is no trim at the corners
First session is booked for friday cheers Constantin
Constantin wrote on Tue, 07 September 2010 13:22 |
First session is booked for friday cheers
Constantin
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Sweet!!!
Hope it goes great!
OK, it`s finaly done!!!!!!!!
cheers Mika
...edit
OMG she's beautiful!
Oops..
The room is beautiful!
Seriously, both are. It looks very good. Was expecting another set of build pictures and got a pleasant surprise. Congrats!
Nice!!!
And very beautiful singer indeed.
Glad to see it all turned out great you did an amazing job!
My hat off to you Constantin for this impressive work, done almost only by yourself and against all of your health problems. It should be an example for everyone wanting to follow their dream, regardless of the various obstacles life brings in the way. (and it took you only 5 pages to do it ! )
I sincerely hope that your health is better and will allow you to enjoy working in this beautiful place you have now. Take care !
PS : I have one question, though, who is Mika ? Is it just a nickname of you, or its another person using the same account here ?
Thank you all for your kind words. Yes Mika is my Nickname, and most of the people don`t know, that this is not my real name
Health....... better don`t talk ot think about it
cheers Mika
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