Subject: Re: [AUDITORY] MIDI Drum Pads: Delay and temporal resolution From: =?iso-8859-1?Q?St=F6ter=2C_Fabian-Robert?= <=?iso-8859-1?Q?St=F6ter=2C_Fabian-Robert?=> Date: Thu, 20 Jun 2013 08:44:16 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--_000_47A9A81E04CC440D925CB247009DCF71audiolabserlangende_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On Jun 19, 2013, at 11:49 AM, Mikael.Fernstrom <Mikael.Fernstrom@xxxxxxxx<mail= to:Mikael.Fernstrom@xxxxxxxx>> wrote: A less expensive data acquisition system is an Arduino with some simple int= erface wiring. Cost around 25 euro. and On Jun 19, 2013, at 10:13 AM, Julius Smith <jos@xxxxxxxx<mailto:j= os@xxxxxxxx>> wrote: To get below 1 ms I would probably connect a piezo film to an Arduino or so= mething like that. An Arduino does indeed have a low polling interval at the ADCs (I believe i= t is around 100 =B5s). But depending on what kind of auditory feedback you= want to give to the participant, 8bit beep sounds may not be very pleasant= . Personally I would just stay in the analog domain and generate the sounds b= y one of these analog drum modules. They are inexpensive and can be trigger= ed directly from piezo sensors (e.g.: http://www.mfberlin.de/Produkte/Modul= e/DRUM-05/DRUM-05e/drum-05e.html) Fabian -- Dipl.-Ing. Fabian-Robert St=F6ter International Audio Laboratories Erlangen (AudioLabs) Universit=E4t Erlangen-N=FCrnberg & Fraunhofer IIS, Audio & Multimedia Am Wolfsmantel 33 91058 Erlangen Tel.: 09131 85-20518 Fax: 09131 85-20524 Skype: faroit fabian-robert.stoeter@xxxxxxxx<mailto:fabian-robert.stoeter@xxxxxxxx= diolabs-erlangen.de> http://www.audiolabs-erlangen.de<http://www.audiolabs-erlangen.de/> --_000_47A9A81E04CC440D925CB247009DCF71audiolabserlangende_ Content-Type: text/html; charset="iso-8859-1" Content-ID: <B7B71AD03114894DA8B4759331654D59@xxxxxxxx> Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> </head> <body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin= e-break: after-white-space; "> <div><br> </div> <div>On Jun 19, 2013, at 11:49 AM, Mikael.Fernstrom <<a href=3D"mailto:M= ikael.Fernstrom@xxxxxxxx">Mikael.Fernstrom@xxxxxxxx</a>> wrote:</div> <br class=3D"Apple-interchange-newline"> <blockquote type=3D"cite"> <div>A less expensive data acquisition system is an Arduino with some simpl= e interface wiring.</div> <div>Cost around 25 euro.</div> </blockquote> <div><br> </div> and <div><br> <div> <div>On Jun 19, 2013, at 10:13 AM, Julius Smith <<a href=3D"mailto:jos@xxxxxxxx= CRMA.STANFORD.EDU">jos@xxxxxxxx</a>> wrote:</div> <br class=3D"Apple-interchange-newline"> <blockquote type=3D"cite"><span style=3D"font-family: Helvetica; font-size:= medium; font-style: normal; font-variant: normal; font-weight: normal; let= ter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-a= uto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2= ; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-wi= dth: 0px; display: inline !important; float: none; ">To get below 1 ms I would probably connect a piezo film to an Arduino or some= thing like that.</span><br style=3D"font-family: Helvetica; font-size: medi= um; font-style: normal; font-variant: normal; font-weight: normal; letter-s= pacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; wor= d-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: = 0px; "> </blockquote> </div> <br> <div>An Arduino does indeed have a low polling interval at the ADCs (I beli= eve it is around 100 =B5s). But depending on what kind of audito= ry feedback you want to give to the participant, 8bit beep sounds may not b= e very pleasant. </div> <div><br> </div> <div>Personally I would just stay in the analog domain and generate the sou= nds by one of these analog drum modules. They are inexpensive and can be tr= iggered directly from piezo sensors (e.g.: <a href=3D"http://www.mfber= lin.de/Produkte/Module/DRUM-05/DRUM-05e/drum-05e.html">http://www.mfberlin.= de/Produkte/Module/DRUM-05/DRUM-05e/drum-05e.html</a>)</div> <div><br> </div> <div>Fabian</div> <div><br> </div> <div> <div><span class=3D"Apple-style-span" style=3D"border-collapse: separate; b= order-spacing: 0px; "> <div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line= -break: after-white-space; "> <div>--<br> Dipl.-Ing. Fabian-Robert St=F6ter<br> <br> International Audio Laboratories Erlangen (AudioLabs) </div> <div>Universit=E4t Erlangen-N=FCrnberg & Fraunhofer IIS, Audio &am= p; Multimedia</div> <div>Am Wolfsmantel 33<br> 91058 Erlangen<br> Tel.: 09131 85-20518<br> Fax: 09131 85-20524<br> Skype: faroit<br> <a href=3D"mailto:fabian-robert.stoeter@xxxxxxxx">fabian-rober= t.stoeter@xxxxxxxx</a><br> <a href=3D"http://www.audiolabs-erlangen.de/">http://www.audiolabs-erlangen= .de</a><br> </div> <div><br> </div> </div> </span></div> </div> </div> </body> </html> --_000_47A9A81E04CC440D925CB247009DCF71audiolabserlangende_--