If this template helps then use it. If not then just delete and start from scratch.
OS (e.g. Win10):
PsychoPy version (e.g. 1.84.x): 04
Standard Standalone? (y/n) If not then what?: yes
**What are you trying to achieve?:
I have a sound file, 22050Hz, 16 bit, about 22 minutes in duration. I play the sound file, and while the sound is being played, the syllables are shown on the screen (4500 syllables in total, shown sequentially, taken from the excel file). Each syllable should stay on the screen 290 ms.
What specifically went wrong when you tried that?:
No errors are generated. The problem: from time to time the syllables are speeded up, and instead of being on the screen for 290ms a random syllable may only blink on the screen, and the next syllable is played. Or a random syllable stays on the screen longer than 290 ms. It happens approximately once in every 20-30 syllables. Interestingly, the overall duration of the syllable stream is 4500syl * 290ms = 1305sec (as it is supposed to be) and matches the duration of the sound file, that is, I think, speeded up or slowed presentations are compensated from durations of the neighbourng syllables? Presentation of the syllables start and finish with the sound file.
What is to be done to prevent the presentation of a random syllable on the screen from speeding up/staying longer than the defined duration of 290ms?