Jump to content


Photo

Reducing echo in room


  • Please log in to reply
5 replies to this topic

#1 Matthew W. Phillips

Matthew W. Phillips
  • Sustaining Members
  • 1792 posts
  • Other

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.

Attached Files


  • 0

#2 Brian Drysdale

Brian Drysdale
  • Basic Members
  • PipPipPipPip
  • 5070 posts
  • Cinematographer

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.


  • 0

#3 Brian Drysdale

Brian Drysdale
  • Basic Members
  • PipPipPipPip
  • 5070 posts
  • Cinematographer

Posted 08 April 2014 - 05:47 PM

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


  • 0

#4 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

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).
  • 0

#5 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 08 April 2014 - 06:27 PM

Just rembered another goody: foliage

Think jungle.
  • 0

#6 Matthew W. Phillips

Matthew W. Phillips
  • Sustaining Members
  • 1792 posts
  • Other

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.

 

 

Attached Files


  • 0


Glidecam

CineTape

FJS International, LLC

Paralinx LLC

Willys Widgets

Broadcast Solutions Inc

Gamma Ray Digital Inc

Metropolis Post

Opal

Tai Audio

Media Blackout - Custom Cables and AKS

Ritter Battery

The Slider

Technodolly

Abel Cine

Rig Wheels Passport

CineLab

Aerial Filmworks

rebotnix Technologies

Wooden Camera

Visual Products

Technodolly

Broadcast Solutions Inc

CineTape

Opal

Tai Audio

Wooden Camera

Gamma Ray Digital Inc

Ritter Battery

Rig Wheels Passport

Glidecam

Aerial Filmworks

Paralinx LLC

Abel Cine

Metropolis Post

FJS International, LLC

Willys Widgets

The Slider

Visual Products

CineLab

Media Blackout - Custom Cables and AKS

rebotnix Technologies