[open] Two samplers playing simultaneously rather than one after the other
I came across a funny problem and I was wondering if you have any idea why this is happening.
I am modifying the PyGaze eye-tracking template to obtain a simple visual world paradigm experiment to measure eye movements on a scene during two sentences presented one after the other (sound1 and sound2).
This is the trial_sequence inside the block_loop:
- fixation_dot (sketchpad, duration: "keypress")
- scene (sketchpad, duration: 0)
- sound1 (sampler, duration: "sound")
- sound2 (sampler, duration: "sound")
- press_key (sketchpad, duration: 0)
The rest of the experiment is the unmodified PyGaze eye-tracking template.
The problem is that only for the first item in the practice loop the sound2 doesn't start immediately after sound1, but they start simultaneously, and the scene is not shown at all.
This does not happen for the following items in the practice loop, nor does it happen at all in the experimental loop, where everything works correctly (samplers and scene).
Would you have any idea why this happens?
The same items are shown / playing in the practice loop and in the experimental loop.