ANSI standard for anechoic room or free field ("Scharine, Angelique (Civ,ARL/HRED)" )

Subject: ANSI standard for anechoic room or free field From: "Scharine, Angelique (Civ,ARL/HRED)" <AScharine(at)ARL.ARMY.MIL> Date: Fri, 21 Nov 2003 10:41:37 -0500 This is a multi-part message in MIME format. ------_=_NextPart_001_01C3B045.F2E49D4F Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I'm looking for the standard that gives the maximum RT60 values of an = anechoic room. I also need the frequency range over which they should = fall within these values. I've looked at the listing of standards online = (including ISO, IEC) but I can't seem to find the relevant one there or = in our library here. Could someone direct me please? A. =20 (offlist responses are fine) Intellectuals solve problems: geniuses prevent them. -Albert Einstein, = physicist, Nobel laureate (1879-1955)) =20 Ang=E9lique A. Scharine Ph. D. Army Research Lab/HRED AMSRL-HR-SD Building 520 Aberdeen Proving Ground, MD 21005-5425 =20 Office: (410) 278-5957 DSN: 298-5957 Fax: (410) 278-3587 =20 ------_=_NextPart_001_01C3B045.F2E49D4F Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Message</TITLE> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1264" name=3DGENERATOR></HEAD> <BODY> <DIV>I'm = looking for the=20 standard that gives the maximum RT60 values of an anechoic room. I also = need the=20 frequency range over which they should fall within these values. I've = looked at=20 the listing of standards online (including ISO, IEC) but I can't seem to = find=20 the relevant one there or in our library here. Could someone direct me=20 please?</DIV> <DIV>A.</DIV> <DIV> </DIV> <DIV>(offlist responses=20 are fine)</DIV> <DIV align=3Dleft><SPAN=20 style=3D"COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-size: = 10.0pt; mso-bidi-font-family: 'Courier New'"><SPAN=20 style=3D"FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'"><SPAN=20 style=3D"FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'"><SPAN=20 style=3D"FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'"><SPAN=20 style=3D"FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'"><SPAN=20 style=3D"FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'"> <DIV align=3Dleft><PRE><DIV align=3Dleft><PRE class=3DMsoNormal = style=3D"MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><SPAN style=3D"FONT-SIZE: 12pt; FONT-FAMILY: AvantGarde; = mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Courier New'; = mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; = mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN = style=3D"FONT-SIZE: 12pt; FONT-FAMILY: AvantGarde; mso-bidi-font-size: = 10.0pt; mso-bidi-font-family: 'Courier New'; mso-fareast-font-family: = 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: = EN-US; mso-bidi-language: AR-SA"><SPAN style=3D"FONT-SIZE: 12pt; = FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'; mso-fareast-font-family: 'Times New = Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; = mso-bidi-language: AR-SA"><SPAN style=3D"FONT-SIZE: 12pt; FONT-FAMILY: = AvantGarde; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Courier = New'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: = EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN style=3D"FONT-SIZE: 12pt; FONT-FAMILY: AvantGarde; = mso-bidi-font-size: 10.0pt; mso-bidi-font-family: 'Courier New'; = mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; = mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN = style=3D"FONT-SIZE: 12pt; FONT-FAMILY: AvantGarde; mso-bidi-font-size: = 10.0pt; mso-bidi-font-family: 'Courier New'; mso-fareast-font-family: = 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: = EN-US; mso-bidi-language: AR-SA"><SPAN style=3D"FONT-SIZE: 12pt; = FONT-FAMILY: AvantGarde; mso-bidi-font-size: 10.0pt; = mso-bidi-font-family: 'Courier New'; mso-fareast-font-family: 'Times New = Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; = mso-bidi-language: AR-SA">Intellectuals solve problems: geniuses prevent them. -Albert = Einstein, physicist, Nobel laureate = (1879-1955))<?xml:namespace prefix =3D o ns =3D = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FO= NT>= </S= PAN></SPAN= > Ang=E9lique = A. Scharine Ph. D. Army Research Lab/HRED AMSRL-HR-SD Building = 520 Aberdeen Proving Ground, = MD 21005-5425</PRE></DIV><DIV class=3DMsoNormal = style=3D"MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><o:p></o:p> </DIV><DIV>Office: (410) = 278-5957 DSN: 298-5957 Fax: (410) = 278-3587<o:p></o:p></DIV></SP= AN>= </PRE></DIV></DIV> <DIV> </DIV></BODY></HTML> =00 ------_=_NextPart_001_01C3B045.F2E49D4F--

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Electrical Engineering Dept., Columbia University