Subject: Re: looking for recommendation for in-ear microphones From: "Ravicz, Mike" <Mike_Ravicz@xxxxxxxx> Date: Thu, 26 May 2011 10:12:39 -0400 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>This is a multi-part message in MIME format. ------_=_NextPart_001_01CC1BAE.F8A897C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Michael, We have used Knowles miniature microphones = <http://www.knowles.com/search/product.htm?x_sub_cat_id=3D8> for many = years for many purposes, including in-ear sound pressure recordings. We = used a probe tube (as do most other people who make such recordings), = which can cause noise floor problems at high frequencies. The fairly = new FG series of microphones from Knowles is small enough that you could = probably put the entire microphone in the ear canal without affecting = the sound field too much. (I see that the GA series is even smaller, = but we have not used them yet.) I assume that this is for human = subjects. Best regards, Mike Mike Ravicz, Eaton-Peabody Lab., Mass. Eye & Ear Infirmary, Boston MA = 02114 +1 (617) 573-5591; +1 (617) 720-4408 FAX "In theory, there is no difference between theory and fact; but in fact, = there is." - someone ------_=_NextPart_001_01CC1BAE.F8A897C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Diso-8859-1"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version = 6.5.7638.1"> <TITLE>RE: looking for recommendation for in-ear microphones</TITLE> </HEAD> <BODY> <!-- Converted from text/plain format --> <BR> <P><FONT SIZE=3D2>Hello Michael,<BR> <BR> We have used Knowles miniature microphones <<A = HREF=3D"http://www.knowles.com/search/product.htm?x_sub_cat_id=3D8">http:= //www.knowles.com/search/product.htm?x_sub_cat_id=3D8</A>> for many = years for many purposes, including in-ear sound pressure = recordings. We used a probe tube (as do most other people who make = such recordings), which can cause noise floor problems at high = frequencies. The fairly new FG series of microphones from Knowles = is small enough that you could probably put the entire microphone in the = ear canal without affecting the sound field too much. (I see that = the GA series is even smaller, but we have not used them yet.) I = assume that this is for human subjects.<BR> <BR> Best regards,<BR> Mike<BR> <BR> Mike Ravicz, Eaton-Peabody Lab., Mass. Eye & Ear Infirmary, Boston = MA 02114<BR> +1 (617) 573-5591; +1 (617) 720-4408 FAX<BR> "In theory, there is no difference between theory and fact; but in = fact, there is." - someone<BR> <BR> </FONT> </P> </BODY> </HTML> ------_=_NextPart_001_01CC1BAE.F8A897C0--