Testing whether some humans can hear high frequencies inaudible to "normal" humans ("Divakaran, Ajay" )


Subject: Testing whether some humans can hear high frequencies inaudible to "normal" humans
From:    "Divakaran, Ajay"  <adivakaran@xxxxxxxx>
Date:    Sun, 13 Jun 2010 20:25:22 -0400
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--_000_91F640D26AB8E54982706321A514CA268BAB7B9D5CMALIBUsarnoff_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear List, My friend thinks that his child can hear frequencies that are inaudible to = other humans because of which he sometimes reacts with alarm that no one el= se understands. Is there a way we can verify this systematically? In my ele= ctronics lab during my undergrad one of my friends tested my hearing by var= ying the frequency output of a signal generator. Is there a possibility of= doing that on a PC? Also, I would highly appreciate any references on music therapy for languag= e delayed children. I am interested in vocal music training in particular b= ut would appreciate any general music training as well for therapeutic purp= oses. Best Regards, ajay Ajay Divakaran, Ph.D. Technical Manager Vision and Multi-Sensor Systems Sarnoff Corporation 201 Washington Road PO Box 5300 Princeton, NJ 08543 adivakaran@xxxxxxxx<mailto:adivakaran@xxxxxxxx> www.sarnoff.com<http://www.sarnoff.com> Phone: 609-734-2204 Cell: 609-578-7065 Fax: 609-734-2662 --_000_91F640D26AB8E54982706321A514CA268BAB7B9D5CMALIBUsarnoff_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:x=3D"urn:schemas-microsoft-com:office:excel" xmlns:p=3D"urn:schemas-m= icrosoft-com:office:powerpoint" xmlns:a=3D"urn:schemas-microsoft-com:office= :access" xmlns:dt=3D"uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s=3D"= uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs=3D"urn:schemas-microsof= t-com:rowset" xmlns:z=3D"#RowsetSchema" xmlns:b=3D"urn:schemas-microsoft-co= m:office:publisher" xmlns:ss=3D"urn:schemas-microsoft-com:office:spreadshee= t" xmlns:c=3D"urn:schemas-microsoft-com:office:component:spreadsheet" xmlns= :odc=3D"urn:schemas-microsoft-com:office:odc" xmlns:oa=3D"urn:schemas-micro= soft-com:office:activation" xmlns:html=3D"http://www.w3.org/TR/REC-html40" = xmlns:q=3D"http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc=3D"http://m= icrosoft.com/officenet/conferencing" xmlns:D=3D"DAV:" xmlns:Repl=3D"http://= schemas.microsoft.com/repl/" xmlns:mt=3D"http://schemas.microsoft.com/share= point/soap/meetings/" xmlns:x2=3D"http://schemas.microsoft.com/office/excel= /2003/xml" xmlns:ppda=3D"http://www.passport.com/NameSpace.xsd" xmlns:ois= =3D"http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir=3D"http://= schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds=3D"http://www.w3= .org/2000/09/xmldsig#" xmlns:dsp=3D"http://schemas.microsoft.com/sharepoint= /dsp" xmlns:udc=3D"http://schemas.microsoft.com/data/udc" xmlns:xsd=3D"http= ://www.w3.org/2001/XMLSchema" xmlns:sub=3D"http://schemas.microsoft.com/sha= repoint/soap/2002/1/alerts/" xmlns:ec=3D"http://www.w3.org/2001/04/xmlenc#"= xmlns:sp=3D"http://schemas.microsoft.com/sharepoint/" xmlns:sps=3D"http://= schemas.microsoft.com/sharepoint/soap/" xmlns:xsi=3D"http://www.w3.org/2001= /XMLSchema-instance" xmlns:udcs=3D"http://schemas.microsoft.com/data/udc/so= ap" xmlns:udcxf=3D"http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udc= p2p=3D"http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf=3D"http:/= /schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss=3D"http://sche= mas.microsoft.com/office/2006/digsig-setup" xmlns:dssi=3D"http://schemas.mi= crosoft.com/office/2006/digsig" xmlns:mdssi=3D"http://schemas.openxmlformat= s.org/package/2006/digital-signature" xmlns:mver=3D"http://schemas.openxmlf= ormats.org/markup-compatibility/2006" xmlns:m=3D"http://schemas.microsoft.c= om/office/2004/12/omml" xmlns:mrels=3D"http://schemas.openxmlformats.org/pa= ckage/2006/relationships" xmlns:spwp=3D"http://microsoft.com/sharepoint/web= partpages" xmlns:ex12t=3D"http://schemas.microsoft.com/exchange/services/20= 06/types" xmlns:ex12m=3D"http://schemas.microsoft.com/exchange/services/200= 6/messages" xmlns:pptsl=3D"http://schemas.microsoft.com/sharepoint/soap/Sli= deLibrary/" xmlns:spsl=3D"http://microsoft.com/webservices/SharePointPortal= Server/PublishedLinksService" xmlns:Z=3D"urn:schemas-microsoft-com:" xmlns:= st=3D"&#1;" xmlns=3D"http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; charset=3Dus-ascii"= > <meta name=3DGenerator content=3D"Microsoft Word 12 (filtered medium)"> <style> <!-- /* Font Definitions */ @xxxxxxxx {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @xxxxxxxx {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri","sans-serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri","sans-serif"; color:windowtext;} .MsoChpDefault {mso-style-type:export-only;} @xxxxxxxx WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --> </style> <!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3DEN-US link=3Dblue vlink=3Dpurple> <div class=3DWordSection1> <p class=3DMsoNormal>Dear List,<o:p></o:p></p> <p class=3DMsoNormal><o:p>&nbsp;</o:p></p> <p class=3DMsoNormal>My friend thinks that his child can hear frequencies t= hat are inaudible to other humans because of which he sometimes reacts with ala= rm that no one else understands. Is there a way we can verify this systematica= lly? In my electronics lab during my undergrad one of my friends tested my heari= ng by varying the frequency output of a signal generator. Is there&nbsp; a pos= sibility of doing that on a PC?<o:p></o:p></p> <p class=3DMsoNormal><o:p>&nbsp;</o:p></p> <p class=3DMsoNormal>Also, I would highly appreciate any references on musi= c therapy for language delayed children. I am interested in vocal music train= ing in particular but would appreciate any general music training as well for therapeutic purposes.<o:p></o:p></p> <p class=3DMsoNormal><o:p>&nbsp;</o:p></p> <p class=3DMsoNormal>Best Regards,<o:p></o:p></p> <p class=3DMsoNormal>ajay<o:p></o:p></p> <p class=3DMsoNormal><o:p>&nbsp;</o:p></p> <p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Arial","s= ans-serif"'>Ajay Divakaran, Ph.D.<br> Technical Manager<br> Vision and Multi-Sensor Systems<br> Sarnoff Corporation<br> 201 Washington Road<br> PO Box 5300<br> Princeton, NJ 08543</span><o:p></o:p></p> <div> <p class=3DMsoNormal>&nbsp;<o:p></o:p></p> </div> <p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Arial","s= ans-serif"'><a href=3D"mailto:adivakaran@xxxxxxxx"><span style=3D'color:blue'>adivakara= n@xxxxxxxx</span></a><br> <a href=3D"http://www.sarnoff.com"><span style=3D'color:blue'>www.sarnoff.c= om</span></a><br> Phone: 609-734-2204<o:p></o:p></span></p> <p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Arial","s= ans-serif"'>Cell: 609-578-7065<br> Fax: 609-734-2662</span><o:p></o:p></p> <p class=3DMsoNormal><o:p>&nbsp;</o:p></p> </div> </body> </html> --_000_91F640D26AB8E54982706321A514CA268BAB7B9D5CMALIBUsarnoff_--


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