Acoustics: help on the design of a small Sound Absorbing Cage for rodent sound stimulation (Joao Bacelo )


Subject: Acoustics: help on the design of a small Sound Absorbing Cage for rodent sound stimulation
From:    Joao Bacelo  <joao.bacelo@xxxxxxxx>
Date:    Thu, 3 Feb 2011 14:41:02 +0100
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

> This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3379588862_1160712 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Dear All, =20 I=B9m trying to build a small cage (~20x20 cm (8x8 inch)) for sound stimulation of mice, during neurophysiologic experiments. =20 The idea is to create a room where the sound (coming from above) will reach the animal the same way independently of its location in the cage (echo reduction). =20 The loudspeaker will be located 50 cm (20inch) above the cage (top is opened).=20 And the frequencies used will be in the range of 4 =AD 32 KHz. =20 -In order to assure the most homogeneous SPLs along the horizontal plane, and to avoid sound distortions, what do you advise me to use as sound absorbing material for the walls and floor? The acoustic foams I found on the market only had noise reduction coefficients tested up to 4 KHz=8A =20 -And which shape should the cage have? Circular? =20 Thanks for the help. Best regards, Joao --B_3379588862_1160712 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable <HTML> <HEAD> <TITLE>Acoustics: help on the design of a small Sound Absorbing Cage for ro= dent sound stimulation</TITLE> </HEAD> <BODY> <FONT FACE=3D"Times New Roman"><SPAN STYLE=3D'font-size:12pt'>Dear All,<BR> &nbsp;<BR> I&#8217;m trying to build a small cage (~20x20 cm (8x8 inch)) for sound sti= mulation of mice, during neurophysiologic experiments. <BR> &nbsp;<BR> The idea is to create a room where the sound (coming from above) will reach= the animal the same way independently of its location in the cage (echo red= uction).<BR> &nbsp;<BR> The loudspeaker will be located 50 cm (20inch) above the cage (top is opene= d). <BR> And the frequencies used will be in the range of 4 &#8211; 32 KHz.<BR> &nbsp;<BR> -In order to assure the most homogeneous SPLs along the horizontal plane, a= nd to avoid sound distortions, what do you advise me to use as sound absorbi= ng material for the walls and floor? The acoustic foams I found on the marke= t only had noise reduction coefficients tested up to 4 KHz&#8230;<BR> &nbsp;<BR> -And which shape should the cage have? Circular?<BR> &nbsp;<BR> Thanks for the help.<BR> Best regards,<BR> Joao<BR> </SPAN></FONT><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'= font-size:11pt'><BR> </SPAN></FONT> </BODY> </HTML> --B_3379588862_1160712--


This message came from the mail archive
/home/empire6/dpwe/public_html/postings/2011/
maintained by:
DAn Ellis <dpwe@ee.columbia.edu>
Electrical Engineering Dept., Columbia University