Hi all, I’m having an issue with intermittent problems with sounddevice. A majority of the time I call it (see the minimal example below), I get a horrible sound that plays continuously. It starts as soon as line 151 of backend_sounddevice.py is called: self._sdStream.start() I imagine it has to …

No one else experiences this? I’ve noticed it on OSX as well, so it seems more general than just an ubuntu issue.

Hi Ian, Just trying out the sounddevice backend, and I have the same problem (very annoying/loud buzzing tone sound as soon as I define a sound, which presumably is starting the stream). Did you manage to find a solution? Hoping to avoid Psychopy v1.90 until it’s got the bugs worked out, but this i…

I’ve been looking into this issue with the help of @matthias.geier , and we have a few leads that indicate there is likely a bug in the pyschopy implementation of sounddevice. Please see below for the relevant details of our troubleshooting exchange and this google drive folder for audio files with e…

OK, I had a closer look. It turns out that the way how the output buffer is supposed to be filled with zeros is buggy: https://github.com/psychopy/psychopy/pull/1847 .

Huzzah! Thanks very much for figuring this out! Much appreciated.

Sounddevice issue with stream started at beginning

Coding

Ian_Eisenberg June 2, 2018, 6:50pm 6

Awesome! Thanks for figuring this out

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Sounddevice issue with stream started at beginning

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