i want to build a QRD diffuser, do you have suggestions?

elan · 17th January 2010

Hello, i want to build a diffuser to put in the back of the room, in that free space in the wall near the window, down here you can find two threads with some pictures of the room and measurements. Honestly i would like to buy one, but for various reason (money and the fact that where i live there aren't most of the best brands - Real Traps, GIK, etc - and the ones we have costs so much, plus if i would like to buy them from US i will pay so much of shipping costs and duties) i can't.

questions:

1) So, i have a lot of MDF 3 cm (1.2 inch) thick, could i use it? it's good?
2) I've read a bit of stuff on the net, but how to chose on which frequency tune the diffuser? honestly i would like something that works on all the spectrum if it's possible.
3) Give me some useful links if you have them at hands

I've seen the Ethan video about diffusers (The sound of diffusion) and it's really impressive, if i could i would like to buy a couple of them immediately, BTW i have to try to do something as close as possible.

But, honestly i think will be easier, with the MDF, making something like this http://www.icixsound.com/vb/icixnati...ges/202_79.jpg

There are a lot of differences between this type and the Real Trap diffuser Ethan shows in his video? I know the Ethan one function also as absorber, but skipping the absorption part, there are a lot of difference in the way they diffuse?

I will and I'm reading a lot of stuff on the net and i will go deeply in the argument, but honestly when i usually start reading everything i feel a little confuse so i hope to find here, in you, an help, a guide

thanks!

The end:

Finally i finished my studio! photos and suggestions

The beginning:

my studio acoustic - strange freq response

takman · 17th January 2010

QRDude: Quadratic Residue Diffuser calculator

Guillermo · 18th January 2010

Heres a vid that could help you

YouTube - 1D QRD Acoustic Diffusor

PaulP · 18th January 2010

Great video. I can definitely see some QRDs in my future.

Here's another interesting video showing a QRD in action : Video.

Paul P

17th January 2010	#1
elan Lives for gear Joined: May 2008 Posts: 1,847 Thread Starter	i want to build a QRD diffuser, do you have suggestions? Hello, i want to build a diffuser to put in the back of the room, in that free space in the wall near the window, down here you can find two threads with some pictures of the room and measurements. Honestly i would like to buy one, but for various reason (money and the fact that where i live there aren't most of the best brands - Real Traps, GIK, etc - and the ones we have costs so much, plus if i would like to buy them from US i will pay so much of shipping costs and duties) i can't. questions: 1) So, i have a lot of MDF 3 cm (1.2 inch) thick, could i use it? it's good? 2) I've read a bit of stuff on the net, but how to chose on which frequency tune the diffuser? honestly i would like something that works on all the spectrum if it's possible. 3) Give me some useful links if you have them at hands I've seen the Ethan video about diffusers (The sound of diffusion) and it's really impressive, if i could i would like to buy a couple of them immediately, BTW i have to try to do something as close as possible. But, honestly i think will be easier, with the MDF, making something like this http://www.icixsound.com/vb/icixnati...ges/202_79.jpg There are a lot of differences between this type and the Real Trap diffuser Ethan shows in his video? I know the Ethan one function also as absorber, but skipping the absorption part, there are a lot of difference in the way they diffuse? I will and I'm reading a lot of stuff on the net and i will go deeply in the argument, but honestly when i usually start reading everything i feel a little confuse so i hope to find here, in you, an help, a guide thanks! The end: Finally i finished my studio! photos and suggestions The beginning: my studio acoustic - strange freq response __________________ Honest communication is always unique and original. (bob olhsson) I think the growing availability of presets in synths started to make musicians lazy: they were so amazed at what they could use, they stopped thinking if they should. André (andychamp) "Creativity is allowing yourself to make mistakes. Art is knowing which ones to keep" --Scott Adams

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17th January 2010	#2
takman Lives for gear Joined: Apr 2009 Location: Greece Posts: 991	QRDude: Quadratic Residue Diffuser calculator

18th January 2010	#3
Guillermo Gear Head Joined: Jan 2010 Location: Quito, Ecuador Posts: 44	Heres a vid that could help you YouTube - 1D QRD Acoustic Diffusor

18th January 2010	#4
PaulP Lives for gear Joined: Sep 2009 Posts: 1,196	Great video. I can definitely see some QRDs in my future. Here's another interesting video showing a QRD in action : Video. Paul P