Voice key throughout several screens

Katharina

Hello,

I present different numbers one after another on different screens. Some trials are true and some are catch. At catch trials participants should say "No!". They can start speaking at one of three screens (we don't know which). I use a microphone to record it as a voice key with inline, so that we know IF they responded or not to calculate correctness offline. They may not move or use normal keys since I measure force with force sensors.

Now the question: how can I collect response throughout the three screens? I try enclose the file but it always fail here. I can send in private. Many thanks!

eduard

Hi Katharina,

One option would be to start recording before the first and after the last (relevant) screen, and send some sort of triggers to demarcate the beginning of a screen. For example, by playing a tone at the onset of each screen. Like that you can later listen to the recording and figure out when a response was made and to which screen it belonged.

Hope this helps,

eduard

Katharina

Thank you eduard. Well I cannot play any tones and there are hundreds of trials so I would like to spare doing any manual work. Is there any other possibility to fix the inline for three screens? I dont care either what they say, nor the screen. I just want to know in which trials they said smth

eduard

Hi Katharina,

Sure, if you are not afraid of scripting directly in Python, there won't be a problem at all. However, I am not sure I am understanding your trial structure well enough to propose specific code to you. Could either explain again? Including what a trial/screen is and what your current implementation looks like?

Otherwise, you'll find everything you need to know here.

Eduard