Subject: Re: [AUDITORY] Loudspeaker recommendations for animal psychophysics experiments? From: Jakob Christensen-Dalsgaard <jcd@xxxxxxxx> Date: Tue, 17 Apr 2018 06:00:48 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--_000_dac85ee94e28492b9273c6cabad3f857biologysdudk_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear Kerry, If you want to stimulate with vibrations , I would recommend using a vibrat= ion exciter to generate controlled vibrations - for example the Bruel and K= jaer 4810 minishaker with a plate attached. The minishaker is basically a m= odified loudspeaker (modified so it does emit very little sound) and has a = nice flat frequency response. = Greetings = Jakob Jakob Christensen-Dalsgaard, Center for Sound Communication Institute of Biology, University of Southern Denmark Campusvej 55 DK-5230 Odense M Denmark Tel: +45 6550 2448 (office) Web: http://www.sdu.dk/staff/jcd.aspx ________________________________ From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxx>= on behalf of Kerry Walker <kerry.walker@xxxxxxxx> Sent: Monday, April 16, 2018 5:12:06 PM To: AUDITORY@xxxxxxxx Subject: [AUDITORY] Loudspeaker recommendations for animal psychophysics ex= periments? Dear List, We require a small loudspeaker to deliver vibrations in the 100-300Hz range= to mouse whiskers. We are currently using a Visatron Rectangular Speaker D= river <https://uk.rs-online.com/web/p/speaker-drivers/7191954/> , which has= a convenient flat surface, but is producing harmonic artefacts that will b= e easily audible to the mouse. Does anyone have a favourite small loudspeaker than performs well in the lo= w frequency range? Thanks, Kerry -- Early Career Research Fellow, Dept of Physiology, Anatomy & Genetics, Unive= rsity of Oxford Research Associate, St Catherine's College, University of Oxford Oxford Anatomy and Physiology ranked #1 in the QS World University Rankings= 2017, 2018 --_000_dac85ee94e28492b9273c6cabad3f857biologysdudk_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi= n-bottom:0;} --></style> </head> <body dir=3D"ltr"> <div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Helvetica,sans-serif;" dir=3D"ltr"> <div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Helvetica,sans-serif;" dir=3D"ltr"> <p>Dear Kerry,</p> <p>If you want to stimulate with vibrations , I would recommend using a vib= ration exciter to generate controlled vibrations - for example the Bruel an= d Kjaer 4810 minishaker with a plate attached. The minishaker is basically = a modified loudspeaker (modified so it does emit very little sound) and has a nice flat frequency response.= </p> <p> = &nb= sp; = &nb= sp; = &nb= sp; Greetings</p> <p> = &nb= sp; = &nb= sp; = &nb= sp; Jakob<br> </p> <p><br> </p> <div id=3D"Signature"> <div style=3D"font-family:Tahoma; font-size:13px"> <div><font size=3D"2" face=3D"Tahoma"> <p class=3D"MsoNormal"><span lang=3D"EN-GB">Jakob Christensen-Dalsgaard, <b= r> Center for Sound Communication <br> Institute of Biology, University of Southern Denmark <br> Campusvej 55 <br> DK-5230 Odense M <br> Denmark </span></p> <pre><font face=3D"Tahoma">Tel: +45 6550 2448 (office) <br><br>Web: htt= p://www.sdu.dk/staff/jcd.aspx</font></pre> <pre> </pre> </font></div> </div> </div> </div> <hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"> <div id=3D"divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" color= =3D"#000000" face=3D"Calibri, sans-serif"><b>From:</b> AUDITORY - Research = in Auditory Perception <AUDITORY@xxxxxxxx> on behalf of Kerry = Walker <kerry.walker@xxxxxxxx><br> <b>Sent:</b> Monday, April 16, 2018 5:12:06 PM<br> <b>To:</b> AUDITORY@xxxxxxxx<br> <b>Subject:</b> [AUDITORY] Loudspeaker recommendations for animal psychophy= sics experiments?</font> <div> </div> </div> <div> <div dir=3D"ltr"> <div>Dear List,<br> <br> </div> We require a small loudspeaker to deliver vibrations in the 100-300Hz range= to mouse whiskers. We are currently using a <a href=3D"https://uk.rs-online.com/web/p/speaker-drivers/7191954/">Visatro= n Rectangular Speaker Driver </a>, which has a convenient flat surface, but is producing harmonic artefa= cts that will be easily audible to the mouse.<br clear=3D"all"> <div> <div><br> </div> <div>Does anyone have a favourite small loudspeaker than performs well in t= he low frequency range?<br> <br> </div> <div>Thanks,<br> </div> <div>Kerry<br> </div> <div>-- <br> <div class=3D"gmail_signature"> <div dir=3D"ltr"> <div> <div dir=3D"ltr"> <div> <div dir=3D"ltr"> <div> <div dir=3D"ltr"> <div> <div dir=3D"ltr"><span style=3D"font-family:arial,helvetica,sans-serif">Ear= ly Career Research Fellow, Dept of Physiology, Anatomy & Genetics, Univ= ersity of Oxford</span></div> <div dir=3D"ltr"><span style=3D"font-family:arial,helvetica,sans-serif">Res= earch Associate, St Catherine's College, </span><span style=3D"font-family:arial,helvetica,sans-serif"><span><span s= tyle=3D"font-family:arial,helvetica,sans-serif">University of Oxford</span>= </span></span></div> <div dir=3D"ltr"><span style=3D"font-family:arial,helvetica,sans-serif"><sp= an><span style=3D"font-family:arial,helvetica,sans-serif"><br> </span></span></span></div> <div dir=3D"ltr"><span style=3D"font-family:arial,helvetica,sans-serif"><sp= an><span style=3D"font-family:arial,helvetica,sans-serif"></span></span></s= pan><span style=3D"color:rgb(0,0,0)"><span style=3D"font-family:arial,helve= tica,sans-serif"><span style=3D"font-size:11px">Oxford Anatomy and Physiology ranked #1 in the QS World University Rankings 2017,= 2018</span></span><span style=3D"font-size:11px"></span></span></div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </body> </html> --_000_dac85ee94e28492b9273c6cabad3f857biologysdudk_--