Subject: Re: High output headphones From: Brad Ingrao <info(at)bradingrao.com> Date: Wed, 12 Jan 2005 16:34:14 -0600This is a multi-part message in MIME format. ------=_NextPart_000_0021_01C4F8C4.92140300 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Ben, Couldn't you use a hearing aid and deliver the stimulus via the DAI? Then you'd only have to make an earmold. Maybe I'm missing something, but it seems like a pretty straightforward solution. _____________________________________ Best Regards, Brad Ingrao, MSEd, CCC-A, FAAA Editor Email: info(at)bradingrao.com eden The Electronic Deaf Education Network A Virtual Community for Families of Deaf and Hard of Hearing Children www.bradingrao.com _____ From: AUDITORY Research in Auditory Perception [mailto:AUDITORY(at)LISTS.MCGILL.CA] On Behalf Of Ben Hornsby Sent: Wednesday, January 12, 2005 1:22 PM To: AUDITORY(at)LISTS.MCGILL.CA Subject: High output headphones Hello All, I'm looking for headphone/earphone suggestions. I am trying to present speech to persons with severe to profound hearing losses (poorest thresholds of 90 dB HL). I have tried etymotics ER4s and their ER3A insert phones along with Shure E5 in ear monitors and Sennheiser HDA200 headphones. All start clipping the speech before I can achieve the desired real ear output. I am hoping to match the real ear outputs suggested by a prescriptive hearing aid fitting formula (DSLi/o). This results in rms levels for a speech noise, shaped to match a flat 90 dB hearing loss, of ~125 dB in a Zwislocki coupler. When I present my speech at this circuit setting the peaks are quite clipped. Does anyone have experience/suggestions for other earphones to try? I'm afraid I can't use custom devices due to the number of subjects I'll be running so I need something with reusable/replaceable tips or cushions. Thanks for any help. Ben Benjamin W.Y. Hornsby, Ph.D. Research Assistant Professor Vanderbilt Bill Wilkerson Center 1114 19th Avenue South Nashville, TN 37212 Phone: 615-936-5132 e-mail: ben.hornsby(at)vanderbilt.edu ------=_NextPart_000_0021_01C4F8C4.92140300 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Dus-ascii"> <META content=3D"MSHTML 6.00.2900.2523" name=3DGENERATOR></HEAD> <BODY> <DIV dir=3Dltr align=3Dleft><SPAN class=3D335283222-12012005><FONT = face=3DArial=20 color=3D#0000ff size=3D2>Ben,</FONT></SPAN></DIV> <DIV dir=3Dltr align=3Dleft><SPAN class=3D335283222-12012005><FONT = face=3DArial=20 color=3D#0000ff size=3D2></FONT></SPAN> </DIV> <DIV dir=3Dltr align=3Dleft><SPAN class=3D335283222-12012005><FONT = face=3DArial=20 color=3D#0000ff size=3D2>Couldn't you use a hearing aid and deliver the = stimulus via=20 the DAI? Then you'd only have to make an earmold. Maybe I'm = missing=20 something, but it seems like a pretty straightforward=20 solution.</FONT></SPAN></DIV> <DIV dir=3Dltr align=3Dleft><SPAN class=3D335283222-12012005><FONT = face=3DArial=20 color=3D#0000ff size=3D2></FONT></SPAN> </DIV> <DIV dir=3Dltr align=3Dleft><SPAN class=3D335283222-12012005><!-- = Converted from text/plain format --> <P align=3Dleft><FONT face=3DArial=20 size=3D2>_____________________________________<BR>Best = Regards,<BR><BR>Brad=20 Ingrao, MSEd, CCC-A, FAAA<BR>Editor<BR>Email: = info(at)bradingrao.com<BR>eden<BR>The=20 Electronic Deaf Education Network<BR>A Virtual Community for Families of = Deaf=20 and Hard of Hearing=20 Children<BR>www.bradingrao.com<BR><BR><BR><BR></FONT></P></SPAN></DIV><BR= > <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft> <HR tabIndex=3D-1> <FONT face=3DTahoma size=3D2><B>From:</B> AUDITORY Research in Auditory = Perception=20 [mailto:AUDITORY(at)LISTS.MCGILL.CA] <B>On Behalf Of </B>Ben=20 Hornsby<BR><B>Sent:</B> Wednesday, January 12, 2005 1:22 = PM<BR><B>To:</B>=20 AUDITORY(at)LISTS.MCGILL.CA<BR><B>Subject:</B> High output=20 headphones<BR></FONT><BR></DIV> <DIV></DIV> <DIV><FONT face=3DArial size=3D2><SPAN class=3D734451019-12012005>Hello=20 All,</SPAN></FONT></DIV> <DIV><FONT face=3DArial size=3D2><SPAN class=3D734451019-12012005>I'm = looking for=20 headphone/earphone suggestions. I am trying to present speech to persons = with=20 severe to profound hearing losses (poorest thresholds of 90 dB HL). I = have tried=20 etymotics ER4s and their ER3A insert phones along with Shure E5 in = ear=20 monitors and Sennheiser HDA200 headphones. All start clipping the speech = before=20 I can achieve the desired real ear output. I am hoping to match the real = ear=20 outputs suggested by a prescriptive hearing aid fitting formula = (DSLi/o). This=20 results in rms levels for a speech noise, shaped to match a flat 90 dB = hearing=20 loss, of ~125 dB in a Zwislocki coupler. When I present my speech at = this=20 circuit setting the peaks are quite clipped.</SPAN></FONT></DIV> <DIV><FONT face=3DArial size=3D2><SPAN=20 class=3D734451019-12012005></SPAN></FONT> </DIV> <DIV><FONT face=3DArial size=3D2><SPAN class=3D734451019-12012005>Does = anyone have=20 experience/suggestions for other earphones to try? I'm afraid I can't = use custom=20 devices due to the number of subjects I'll be running so I need = something with=20 reusable/replaceable tips or cushions.</SPAN></FONT></DIV> <DIV><FONT face=3DArial size=3D2><SPAN=20 class=3D734451019-12012005></SPAN></FONT> </DIV> <DIV><FONT face=3DArial size=3D2><SPAN class=3D734451019-12012005>Thanks = for any=20 help.</SPAN></FONT></DIV> <DIV><FONT face=3DArial size=3D2><SPAN=20 class=3D734451019-12012005></SPAN></FONT> </DIV> <DIV><FONT face=3DArial size=3D2><SPAN=20 class=3D734451019-12012005>Ben</SPAN></FONT></DIV> <DIV> </DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2></FONT> </DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>Benjamin W.Y. Hornsby,=20 Ph.D.</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>Research Assistant=20 Professor</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>Vanderbilt Bill Wilkerson=20 Center</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>1114 19th Avenue = South</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>Nashville, TN = 37212</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2></FONT> </DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>Phone: = 615-936-5132</FONT></DIV> <DIV align=3Dleft><FONT face=3DArial size=3D2>e-mail: <A=20 href=3D"mailto:ben.hornsby(at)vanderbilt.edu">ben.hornsby(at)vanderbilt.edu</A>= </FONT></DIV> <DIV> </DIV></BODY></HTML> ------=_NextPart_000_0021_01C4F8C4.92140300--