Primitive Root Diffusers

Tech talk about audio recording and live stage production.
---Hosted by Andrew MacRae & Malcolm Boyce

Primitive Root Diffusers

Postby Mathieu Benoit » Tue Oct 25, 2011 10:09 am

Anyone ever built one?

This winter I have 3 projects in mind. One is to build a few more smaller gobos. Second is to build some bass traps for the control room. Third is to maybe build a diffuser for the control room.
"Volume automation takes time. You don't got that kinda time. You could be getting naked with somebody somewhere." -Slipperman

Mathieu Benoit - Fluid Productions
www.fluidaudiogroup.com
www.facebook.com/FluidAudioGroup
User avatar
Mathieu Benoit
Drumwaiter
 
Posts: 4707
Joined: Tue Feb 13, 2007 6:55 pm
Location: Saint John, New Brunswick

Re: Primitive Root Diffusers

Postby Malcolm Boyce » Tue Oct 25, 2011 12:21 pm

No... Curious to hear about you doing it though... :-)
"Once again, it is NEVER the gear that makes a good record.
It just fills Forum pages..." --compasspnt

middleaudio.com
User avatar
Malcolm Boyce
Your Humble Host
 
Posts: 3678
Joined: Wed Feb 22, 2006 12:07 am
Location: Saint John, NB

Re: Primitive Root Diffusers

Postby Mathieu Benoit » Tue Oct 25, 2011 12:26 pm

Malcolm Boyce wrote:No... Curious to hear about you doing it though... :-)


I need to find ways to get the control room in better shape acoustically that I can take upstairs with me when we move the control room upstairs. So bass traps were always a consideration, but now I'm wondering how much a proper diffuser (or several diffusers) would help.
Last edited by Mathieu Benoit on Tue Oct 25, 2011 12:29 pm, edited 1 time in total.
"Volume automation takes time. You don't got that kinda time. You could be getting naked with somebody somewhere." -Slipperman

Mathieu Benoit - Fluid Productions
www.fluidaudiogroup.com
www.facebook.com/FluidAudioGroup
User avatar
Mathieu Benoit
Drumwaiter
 
Posts: 4707
Joined: Tue Feb 13, 2007 6:55 pm
Location: Saint John, New Brunswick

Re: Primitive Root Diffusers

Postby macrae11 » Tue Oct 25, 2011 12:28 pm

I've designed a few diffusers before back in school, but never actually built them, and it's been a long time since I had to do math! What's the lowest frequency you're trying to work on?
User avatar
macrae11
Andrew MacRae
 
Posts: 2128
Joined: Mon Jun 19, 2006 4:12 pm
Location: Oromocto

Re: Primitive Root Diffusers

Postby Mathieu Benoit » Tue Oct 25, 2011 12:30 pm

macrae11 wrote:I've designed a few diffusers before back in school, but never actually built them, and it's been a long time since I had to do math! What's the lowest frequency you're trying to work on?


How low can you go?
"Volume automation takes time. You don't got that kinda time. You could be getting naked with somebody somewhere." -Slipperman

Mathieu Benoit - Fluid Productions
www.fluidaudiogroup.com
www.facebook.com/FluidAudioGroup
User avatar
Mathieu Benoit
Drumwaiter
 
Posts: 4707
Joined: Tue Feb 13, 2007 6:55 pm
Location: Saint John, New Brunswick

Re: Primitive Root Diffusers

Postby Malcolm Boyce » Tue Oct 25, 2011 12:38 pm

Mathieu Benoit wrote:How low can you go?
:lol:
"Once again, it is NEVER the gear that makes a good record.
It just fills Forum pages..." --compasspnt

middleaudio.com
User avatar
Malcolm Boyce
Your Humble Host
 
Posts: 3678
Joined: Wed Feb 22, 2006 12:07 am
Location: Saint John, NB

Re: Primitive Root Diffusers

Postby Mathieu Benoit » Tue Oct 25, 2011 12:59 pm

If the answer is anywhere near 80Hz then you win.
"Volume automation takes time. You don't got that kinda time. You could be getting naked with somebody somewhere." -Slipperman

Mathieu Benoit - Fluid Productions
www.fluidaudiogroup.com
www.facebook.com/FluidAudioGroup
User avatar
Mathieu Benoit
Drumwaiter
 
Posts: 4707
Joined: Tue Feb 13, 2007 6:55 pm
Location: Saint John, New Brunswick

Re: Primitive Root Diffusers

Postby macrae11 » Tue Oct 25, 2011 3:32 pm

Mathieu Benoit wrote:
How low can you go?

You can go as low as you want to go big. First off you have to calculate the wavelength of the lowest frequency you want to affect. So since λ=v/f .......λ=343m/s(speed of sound at sea level)/80Hz........λ=4.2875m. Now I can't remember if you need a half wavelength of depth, or quarter wavelength. Either way 80Hz is a big diffuser. More likely you'd want to have a diffuser to target from the low mids up and then some type of resonator to focus in on problematic lower frequencies. Some Helmholtz resonators might be useful, although they wouldn't be as transferable to the new room because you will most likely have different frequency issues. That's about as far as I can take you. You'll have to do some reading on the quadratic equation, and a whole bunch of other crap that I'm about ten years of memory loss behind.First thing you need to do is get a good book on acoustics. I've heard good things about this one, but haven't read it myself so can't say. Either way, you've got some dry reading ahead of you. Second thing you need to do is shoot your room. This will identify where the problems are and what needs to be fixed. Then you can start formulating a plan about how to fix it. Seems like a lot of work, but I would look at it like a practice run on what you'll have to do for your new room. You'll learn a ton, and probably avoid a lot of headaches by being able to plan ahead better for the new room.
User avatar
macrae11
Andrew MacRae
 
Posts: 2128
Joined: Mon Jun 19, 2006 4:12 pm
Location: Oromocto


Return to Sounds Good...

Who is online

Users browsing this forum: No registered users and 1 guest

cron