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sounds fades away in ssaep experiments #66
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update, it works now, I installed manually pyo and pygame, and put one of these two as default PTB still gave an error
I also changed the output sound from "native sound" or something like that, to another option, with four capital letters. Why am I not being more specific? Because now psychopy gives an error when I try to access the preferences :)
But as long as the sound works, I won't touch it :) |
@danielemarinazzo - try changing the SOA ( = the trial duration ). Tried this just now. With SOA <= 1 I get the volume dropoff, and it's worse for e.g. SOA=0.5 At SOA = 2.0 I didn't hear any volume dropoff over 1 min. Also note here: you could set longer SOAs and have fewer, longer trials. That would remove the unfortunate clicks that accompany the stim onset offset (which also needs fixing). Since you set ITI to zero for your Note that there might be advantages to having delineated trials at later points for averaging etc; my first thought would be maybe 30s trials, for a 5-10 min expt. |
Ok sorry it still fades out for longer runs. So must be to do with the number of repeats. |
Still, with 30s trials you should have no issues... |
Ok, have a better fix: move the sound object creation inside the trials loop. No fading with this. Doing PR now. |
Here #81 |
thanks a lot! what do you have as psychopy sound preferences? Because for me what resolved the issue was to install pyo and pygame nad change the audio type in psychopy. btw do you manage to use PTB as primary sound preference? |
@danielemarinazzo - checking in on this one also. Are you still encountering this error? |
Last time I checked was in April, with a fresh installation of the toolbox at that time, on a different PC (still windows, still python 3.7). Now I cannot check since my new installation does not work |
So the installation works now, and the sound does not fade. I cannot check if it's PTB or else since when I run the |
Hi
in both ssaep experiments the sounds fades away after a few instances, becoming barely audible.
maybe it's my perception but it's somehow less evident in the two frequencies one (4a), but still very real.
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