Audios don't work on Pavlovia

[JessicaGomes]

Hi!

I’m running an online experiment on Pavlovia and running into an audio playback issue. The first audio file always plays correctly, but every subsequent one fails with an “unknown resource” error — even though all the files are in the same folder.

What I’ve tried so far, without success:

• Converting the audio files to both ogg and mp3 formats
• Adding a resource manager to preload the files

Since only the first file loads, I suspect it’s related to how resources are being registered or preloaded rather than the files themselves, but I’m not sure. Any help figuring out what’s going wrong would be much appreciated!

Here’s our GitHub repo: Sign in · GitLab

[wakecarter]

.ogg files won’t work online.

Please check the developer console for specific error messages – perhaps related to the resources.

Wakefield's Daily Tips

Experiment Settings In versions prior to 2025.1.0, one of the most important menu items didn’t actually appear in any of the menus. You could only access it with a mouse by clicking on the cog icon. [image] From 2025.1.0 onwards it is also accessible from the Experiment menu and via a keyboard shortcut (Ctrl-Shift-X) [image] Experiment Settings itself has seven tabs. [image] General is used to define expInfo dialogue box variables and set the PsychoPy version (leave blank unless you hav…

Wakefield's Daily Tips

Developer Tools If you encounter an error in an online study, open the Developer tools console using Ctl-Shift-I in Windows/Chrome, Cmd-Opt-J or Cmd-Opt-I in Mac/Chrome, F12 in IE/Edge, Ctrl-Shift-J in Windows/Safari or Ctrl-Opt-J in Mac/Safari. [image] [image] Select the Console tab at the top and errors item on the left to view errors. Ignore the 404 error related to favicon.ico Look for the error that appears on the main screen and click on the link next to Scheduler._currentTask. Take…

[JessicaGomes]

Hi @wakecarte,

Thank you so much for your help! I managed to fix the “unknown resource” error, but I’m still experiencing the same issue with the second and subsequent audio files. The first audio in both the practice and test blocks plays correctly, but the remaining audio files do not play.

Could you please take a look at the experiment to see what might be causing the problem?

Thank you again for your time and help!

[wakecarter]

I don’t have access to your experiment. Try setting the sound start time to 0.5 second or set it to preload in a static component.

Wakefield's Daily Tips

Sound components should start after the routine has started If you are playing sounds online, then I would recommend setting the start time of any sound files in loops at .1 seconds or later. Since 2023.2 sounds often fail to play online after the first iteration of a loop. It seems to be that if the sound isn’t ready when it is supposed to start it “misses the boat”. If your sound component has a start condition then I would recommend adding a time component to it. For example: Begin Routine …

[JessicaGomes]

Thank you so much! I changed the start time and it worked!!