[solved] variables in sampler

Comments

• sebastiaan

  November 2011 edited 8:42PM

  Hi Naomi,

  Thank you for your interest in OpenSesame!

  This is a bug in previous versions of OpenSesame. What you can do is

  A) update to 0.25 (released today)

  Work around the bug, by inserting the following script in the prepare phase of an inline_script item at the start of the trial sequence:

  self.experiment.set("my_sound_file", self.get("stop")+"_"+self.get("puff")+".wav")

  This creates a new variable "my_sound_file", which can be used in the sampler as [my_sound_file]. (If you don't mix variables and regular text it works, despite the bug).

  Hope this helps!

  Regards,
  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• Naomi

  November 2011 edited 8:42PM

  Thanks you Sebastiaan! I downloaded the new version and it worked like a charm.
• joe

  October 2013 edited 8:42PM

  I'm having this same problem, but I have version 0.26. Can you tell me why this is happening?
• lvanderlinden

  October 2013 edited 8:42PM

  Hi Joe,

  Could you provide us with some more information? How are you using the sampler item? And where does it go wrong? What kind of error message do you get? Perhaps it would be easiest if you could upload your experimental script here by doing the following:

  • Open the "General properties" tab, click "Script editor" and copy the whole script,
  • go to http://pastbin.com or http://gist.github.com, upload your script there (simply paste and submit)
  • and provide us with the resulting link in your forum post.

  Best,

  Lotje

  Did you like my answer? Feel free to
• joe

  October 2013 edited October 2013

  Hi Lotje,

  I've uploaded my script. Here is the link: http://pastebin.com/QmfTQQKD

  What I'm trying to do is have 11 .wav files play at a random order. It is a mix of English "we" and French "oui" words and I have it set up so the participant will press 1 for English and 2 for French. Sometimes the error will happen from the beginning, other times it wont happen until after a few .wav files have played. I'm very new to open sesame so I'm not too saavy at this point.

  The error reads:

  Error: Runtime error
  Description: Failed to load sample in sampler '___sampler': openexp._sampler.legacy.__init__() the file '.wav' does not exist
  

  Thank you
• lvanderlinden

  October 2013 edited 8:42PM

  Hi Joe,

  You set the number of cycles in your loop item to 12, although only 11 cycles contain a value for the variable 'sibilant_type'.

  

  As a consequence, in cycle 12 the sampler item is looking for a file called " .wav" (instead of .e.g , "Female Speaker 1-stimulus001.wav"), which does not exist. This causes the error message.

  Thus, simply setting the number of cycles to 11 instead of 12 should solve the problem.

  Sometimes the error will happen from the beginning, other times it wont happen until after a few .wav files have played.

  This part can be explained by the fact that the order of the loop item is set to random.

  Does that make sense?

  Cheers,

  Lotje

  Did you like my answer? Feel free to
• Sophia

  May 2015 edited 8:42PM

  Hello Sebastian, thank you for opensesame. Could you help me?
  I need to design an perception task and test how people discriminate two different sounds, and I try to get the sampler to pick two sound files in the pool at a time. I added two variables as [word1] and [word2]. I also try to get the subject hear the second sound file after 500ms. But the script like [word1] 500ms [word2] seemed wrong.
• eduard

  June 2015 edited 8:42PM

  Hi Sophia,

  I suppose it might be better if you post your problem in a separate discussion, otherwise it's easily overlooked.

  Regarding your problem, in order to be able to help you, we need more information what you did exactly and what it is that goes wrong. So, you could post your code, and/or the error message. At any rate, more details are necessary, before I can help.

  Thanks,

  Eduard