coding synchronisation of auditory-visual presentation
I am a pretty new user of Opensesame. I creating an experiment by auditory-visual presentation. The auditory stimuli is one musical sequence including 10 chords, and the visual stimuli is an arithmetic including 10 numbers. Each chord is for 650ms, and each number is for 400 ms and 250ms of inter stimulus interval. I have 80 trials.
My question is how to code to make the onset of each number is synchronised with the onset of each chord? and how to make protocol for it, and for presenting 80 trials?