Re: question about localization rig ("torsten.marquardt@xxxxxxxx" )


Subject: Re: question about localization rig
From:    "torsten.marquardt@xxxxxxxx"  <torsten.marquardt@xxxxxxxx>
Date:    Fri, 6 Jul 2012 10:50:41 +0000
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

Hi Stefan, I used for our 24 speaker ring the MOTU 24 I/O audio interface, which feed into two 12-channel 50W-power amps (Knoll, Canada GS12- They are 110V! Now replaced by KES600 coming apparently also as 240V version: http://www.knollsystems.com/prod-amp-kes600.htm ). Canton Plus XS.2 are small concentric 2-way speaker (~100 a pair). The multicore cable "Speakerflex 250/8", which connect from the power amps to two breakout boxes, helps to make the installation look tidy (sourced from Connectronics, UK). Best wishes, Torsten. ----------------------------------------------------------------------------- Torsten Marquardt Lecturer in Auditory Biophysics UCL Ear Institute University College London 332 Gray's Inn Rd., London WC1X8EE, UK ----------------------------------------------------------------------------- -----Original Message----- From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Stefan Bleeck Sent: 02 July 2012 14:18 To: AUDITORY@xxxxxxxx Subject: [AUDITORY] question about localization rig Dear learned colleagues We are replacing our old psychophysics sound localization rig that is regularly used in research and education (typical example: MSc project on sound localization ability when wearing hearing aids). We would like to have a good resolution and the ability to play sounds via any number of channels simultaneously. I am asking for your opinion about the following two options (Both are about the same price and have 24 channels (up to 16 bit and 100 kHz). A) National Instruments http://ohm.ni.com/advisors/retrieve?id=PX2936227&emailqte=1450855 is controlled via data acquisition toolbox and connected to PC via express card (for flexibility, though can use PCI card as well as or instead of). B) Tucker Davies: www.tdt.com/products/RX8.htm TD is controlled using MATLAB via ActiveX and connected to PC via PCI card. Both options require us to sort out amplification, though TD would be delighted to sell us three 8-channel amps totalling 1.5k. Can you recommend one on the basis of your experience? cheers, Stefan -- Dr. Stefan Bleeck Hearing and Balance Centre Institute of Sound and Vibration Research Faculty of Engineering and the Environment University of Southampton, SO17 1BJ, UK Room 4093, Tizard building (13) bleeck@xxxxxxxx Tel.: 02380 596682


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