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Re: Soundproof room for birds

Just to clarify:  are you looking for sound _isolation_ between a bird
chamber and the adjacent area, or for sound absorption _within_ the bird
chamber itself (e.g., anechoic)?

Good isolation requires one set of construction parameters, while reduction
of sound reflections within a chamber requires a different set.

If you are simply needing a way to keep sound transmission to/from the room
to a minimum and don't care so much about creating an anechoic space then
the use of several layers of 5/8" gypsum board with resilient mounting and
acoustical caulk at the seams is a good and cheap approach.

Mass is generally a good thing for isolation.

Good luck,
Rob Maher

> -----Original Message-----
> From: AUDITORY Research in Auditory Perception
> [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Michael H. Coen
> Sent: Thursday, June 02, 2005 12:51 PM
> To: AUDITORY@xxxxxxxxxxxxxxx
> Subject: Re: Soundproof room for birds
> Perhaps you're already familiar with this, but Ofer
> Tchernichovski provides
> details for building inexpensive avian anechoic chambers,
> including his
> choice of foam, at:
>  http://ofer.sci.ccny.cuny.edu/html/chapt_2.html
> Regards,
> Michael Coen
> -----Original Message-----
> From: AUDITORY Research in Auditory Perception
> [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Jeffrey J. Sable
> Sent: Thursday, June 02, 2005 2:21 PM
> To: AUDITORY@xxxxxxxxxxxxxxx
> Subject: [AUDITORY] Soundproof room for birds
> Dear list,
> We are trying to figure out the best way to build soundproof rooms for
> songbird research. We can buy some for about $900 and we
> think we might
> be able to fill our needs for less. We just need a relatively
> small room
> (2-3 feet--0.6-1 m--square) The latest idea we've seen is to line
> portable food coolers with acoustic foam. My question is what
> material(s) are our best options with which to line the "rooms" (with
> the possibility of adding more material outside. Ideal properties for
> the material include thin, inexpensive, and easy to clean--although we
> realize not all may be possible in the same material. We are as
> interested in keeping internal sounds in (approx. 70-90 dB) as in
> keeping exernal sounds out. Thanks in advance for any ideas!
> Sincerely,
> Jeff
> --
> Jeffrey J. Sable, Ph.D.
> Postdoctoral Trainee
> Sensory Neuroscience Training Program
> Beckman Institute & School of Molecular and Cellular Biology
> University of Illinois at Urbana-Champaign
> E-mail: jjsable@xxxxxxxxxxx
> https://netfiles.uiuc.edu/jjsable/www/