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Important Update for Users of Studio 2.2 and 120hz or 300hz Tobii Eye Trackers November 30, 2010

Posted by Jon Ward in eye tracking, Studio, Technology, Tips And Tricks, Tobii, Updates.
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For those people who utilise the fixation filters within Tobii Studio and adjust them to suit their protocols and methodologies then you will have noticed that the functionality has been improved and there is more control over what is classed as a fixation. However a quick point that isn’t instantly apparent is that the “velocity” setting needs to be ‘tuned’ depending on the sampling rate of your system. This is for the simple reason that the measurement is velocity – and related to the time and distance between sample points. So for a quick example, if the velocity setting you had for 60hz was ’35 pixels’, then at 120hz it would be ’17 pixels’ and at 300hz you would put the setting at ‘7 pixels’.

For more information on the new fixation filters you can download the latest Studio 2.x manual from within Studio (go to HELP > DOWNLOAD MANUAL)  or read the help text in the release notes. Or of course give us a call on 01189 000795 or sales@acuity-ets.com and we will be happy to help.

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