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Reducing echo in room


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#1 Matthew W. Phillips

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Posted 08 April 2014 - 05:25 PM

I am setting up my garage as a sound stage for shooting some scenes. I noticed once I purchased my audio gear that my garage has a crazy echo. It has 9' ceilings as well.

 

I managed to hang up a bunch of thrift store blankets on the wall to deaden a lot of the echo but there is still noticeable echo.

 

Attached is a .wav file of what I mean. Anyone have any BUDGET ideas on how I can further decrease echo in the room? Can't afford the expensive audio foam.

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#2 Brian Drysdale

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Posted 08 April 2014 - 05:34 PM

Cardboard egg crates work pretty well. We covered an attic room with them and a BBC sound engineer thought the audio was recorded in a studio. Of course, the sloping ceiling also helped reduce any standing waves.


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#3 Brian Drysdale

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Posted 08 April 2014 - 05:47 PM

The correct term is egg tray: http://www.wynnes.co...ads/2181055.jpg


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#4 Chris Millar

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Posted 08 April 2014 - 06:24 PM

Yip, can vouch for egg trays, they are the classic home studio solution.

In lieu of white noise genration and spectral analysis, I think the general tactic is to be as random as possible with your 'traps' as the pitch of the shapes you're introducing roughly scale with wavelengths of the noise they cancel (perhaps by a factor of 2 or 1/2 I can't recall).
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#5 Chris Millar

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Posted 08 April 2014 - 06:27 PM

Just rembered another goody: foliage

Think jungle.
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#6 Matthew W. Phillips

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Posted 09 April 2014 - 05:33 PM

I ended up taking back the Shure SM7b since it wasn't right for what I was doing. I did get a Shure SM81 condenser which I like the sound of. I tried some of the methods listed (although I don't have egg crates yet, sad to say.) The results are better than before but is this an acceptable level or do I need to still try harder?

 

This is boomed about 18" above my head.

 

 

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Aerial Filmworks

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New Pro Video - New and Used Equipment

Metropolis Post

Willys Widgets

Rig Wheels Passport

Wooden Camera

Gamma Ray Digital Inc

Visual Products

Broadcast Solutions Inc

Tai Audio

CineLab

Ritter Battery

Media Blackout - Custom Cables and AKS

Glidecam

rebotnix Technologies

FJS International, LLC

CineTape