[solved] Need to play a sound every time a key is pressed

Comments

• sebastiaan

  May 2012 edited May 2012

  Hi Henrik,

  Good to hear that your first experiment worked smoothly. Hopefully you'll get some nice data!

  How can i just play a sound in a sequence any time a key is pressed? (Under the conditition that there is no right or wrong answer and it shall only be played IF they pressed a key)

  The easiest way is probably to add a sampler/ synth item right after the keyboard_response and use the following 'run if' statement so that it isn't played when the response timed out:

  [response] != timeout
  

  Part 2 of my problem, i want to show them what rating they gave to each picture, is there any "easy" way to present them the keypress on the same sketchpad like the picture?

  So you want to give them back their own response as feedback at the end of every trial, do I understand that correctly? In order to do that, you can insert a feedback item at the end of the trial and put something like the following text in it:

  You rated the response as [response]

  Does that help you?

  Cheers,
  Sebastiaan

  
  
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• Henrik

  May 2012 edited 9:31PM

  Hey,

  Actually the [response] != timeout plays the ton only at the end of the sketchpad, but the sketchpad runs always for 5 secs so they see any picture the entire 5 secs (they will be recalled later) which mean that term doesnt work (sorry for my unclear problem).

  I dont want to feedback them at the end of each trial, i want to show them which rating they gave to the picture, so lets say for example if they pressed a "3" i would like to give them a ton for "yes you pressed a key" and let the "3" on the sketchpad so they can see what response they logged in for the item.

  So each picture is presented for 5secs, it shall be rated from number 1-5. If they press a key i want a ton to tell them they pressed a key and to show them the number they pressed on the sketchpad.
  Later on we do a free recall, to see how many of the pictures they remembered, the rating is just a distraction and a controll for us to see if the ratings are (hopefully) not significant different.
  The free recall will be done as pen and paper work.

  Thanks for your help,

  Henrik

  P.S.: The data hasnt yet been analysed but i hope we got some findings.
• sebastiaan

  May 2012 edited 9:31PM

  Ah, I see now. So you want to collect a response while the sketchpad is visible, for 5 seconds, and display the last response on top of the sketchpad, right? The script below should do approximately what you need. Please see the Python inline code documentation for more documentation: http://osdoc.cogsci.nl/python-inline-code

  from openexp.keyboard import keyboard
  from openexp.synth import synth
  from openexp.canvas import canvas
  
  # Uncomment for 0.25 and earlier
  # exp = self.experiment
  
  # The name of the sketchpad to draw on
  src_sketchpad = 'my_sketchpad'
  
  # Allowed keys
  allowed_keys = ['1','2','3','4','5']
  
  # Timeout
  timeout = 5000
  
  # Create objects
  my_keyboard = keyboard(exp, keylist=allowed_keys, timeout=5)
  my_synth = synth(exp)
  my_canvas = canvas(exp)
  
  # Collect a response until timeout, show the latest response
  # and play a sound everytime that a response is given
  response = 'timeout'
  start_time = self.get('time_%s' % src_sketchpad)
  while self.time()-start_time < timeout:
      key, time = my_keyboard.get_key()
      if key != None:
          response = my_keyboard.to_chr(key)
          my_synth.play()
          my_canvas.copy(exp.items[src_sketchpad].canvas)
          my_canvas.text('You pressed %s' % response)
          my_canvas.show()
          
  # Log the response
  exp.set('response', response)

  
  
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• Henrik

  May 2012 edited 9:31PM

  Hey,

  Yeah that is what i want to do. If i enter your lines in a inline script, i get the following error message:
  "runtime_error: Error: Runtime error
  Description: Variable 'time_my_sketchpad' is not set in item 'inline_script'.
  
  You are trying to use a variable that does not exist. Make sure that you have spelled and capitalized the variable name correctly. You may wish to use the variable inspector (Control + I) to find the intended variable. "

  If i check the Variable inspector there is no such variable. Since im not very familiar with python im not sure how to fix it.

  Thanks once more for your support.

  Henrik
• sebastiaan

  May 2012 edited 9:31PM

  I should have been a bit clearer: The idea is that you change the line that says

  src_sketchpad = 'my_sketchpad'

  to match the name of the sketchpad that precedes the script. So my_sketchpad might become target_display or something.

  Cheers!

  
  
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• Henrik

  May 2012 edited 9:31PM

  Hey,

  I am really sorry to ask again, but after i fixed that i get the same mistake.

  Python traceback:
  runtime_error: Error: Runtime error
  Description: Variable 'time_pic3' is not set in item 'inline_script'.

  Im using 3 Sketchpads to display 3 items in randomized order in one trial might that be the problem? So im having every item 3 times, i got 3 Sketchpads, 3 Keyloggers and 3 keyboard responses or is that not nessesarcy?

  For the setup i have 3 different categorize of pictures and in order to control measuring errors i wanted to present one per category and than start again with one per category in randomized order.

  Thank you once more for your great support...

  Henrik
• sebastiaan

  May 2012 edited 9:31PM

  If you have an item named pic3 than there is definitely a variable named time_pic3. Make sure that the inline_script is included in the run phase and is executed after the pic3 sketchpad has been shown. Does that fix it?

  
  
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• Henrik

  May 2012 edited 9:31PM

  Hey,

  Yeah i put all the sketchpad names in now, moved the inlinescript behind all three sketchpads. It works now but doesnt show the number nor plays the sound when the key is pressed. The number doesn´t appear at all and the sound is played right after the 5secs of the picture beeing displayed.

  Do i have to put the entire code in an inline script or anything of it in the script of my sketchpads?

  Do i have to edit anything on my sketchpads like "draw image -400 400 You pressed %s' % response" or is the inline script doing all of it? (Or do i have to make changes in all scripts of all my items?)
  Do i have to make an adjusts means due to the fact that i got more items? (Otherwise than:
  src_sketchpad = 'Pic1'
  src_sketchpad = 'Pic2'
  src_sketchpad = 'Pic3'

  My Experiment now looks like:

  • Experiment
  • Inlinescript (to randomize my items)
  • Instructions

  • Phaseloop

    • Inlinescript (to get the randomized items to be displayed on the different sketchpads)
    • Pic1
    • Keyboardresponse1
    • Keylogger1
    • Sound1
    • Pic2
    • Keyboardresponse2
    • Keylogger2
    • Sound2
    • Pic3
    • Keyboardresponse3
    • Keylogger3
    • Sound3
    • Inlinescript (the script you wrote me)

  • Goodbye sketchpad

  Thanks again for your time and support.
• sebastiaan

  May 2012 edited 9:31PM

  Right no, the script works much simpler than that. It simply replaces the keyboard_response and sampler. So you simply insert the script after each sketchpad (make sure that the src_sketchpad variable matches and that the sketchpad duration is set to 0!) and it should behave as you expect. So in your case:

  Pic1
  inline_script1
  logger
  Pic2
  inline_script2
  logger
  Pic3
  inline_script3
  logger
  Pic4
  inline_script4
  logger

  For more information and settings, please see the code comments in the script.

  Good luck!

  
  
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• Henrik

  May 2012 edited 9:31PM

  Hey,

  Thank you very much for that great support, it works perfectly fine now.

  Best regards

  Henrik
• SusannaOB

  October 2015 edited October 2015

  Hi,

  This post massively helped me to play a response after a keypress. I used the code given above and it worked just fine on the version of OS I was originally using. However, when I tried to open my experiment with a newer version, I got this error message:

  "File "dist\libopensesame\inline_script.py", line 96, in run
    File "dist\libopensesame\python_workspace.py", line 160, in _exec
    File "<string>", line 32, in <module>
    File "dist\openexp\_canvas\xpyriment.py", line 61, in copy
  TypeError: set_config() takes exactly 1 argument (2 given)"
  

  This is the inline script I'm using. I'd be grateful if you could help me figure out where I'm going wrong. Thanks!

  from openexp.keyboard import keyboard
  from openexp.synth import synth
  from openexp.canvas import canvas
  
  # Uncomment for 0.25 and earlier
  # exp = self.experiment
  
  # The name of the sketchpad to draw on
  src_sketchpad = 'JOL'
  
  # Allowed keys
  allowed_keys = ['0','1','2','3','4','5','6','7','8','9','*']
  
  # Timeout
  timeout = 3000
  
  # Create objects
  my_keyboard = keyboard(exp, keylist=allowed_keys, timeout=3)
  my_synth = synth(exp)
  my_canvas = canvas(exp)
  
  # Collect a response until timeout, show the latest response
  # and play a sound everytime that a response is given
  response = 'timeout'
  start_time = self.get('time_%s' % src_sketchpad)
  while self.time()-start_time < timeout:
      key, time = my_keyboard.get_key()
      if key != None:
          response = my_keyboard.to_chr(key)
          my_synth.play()
          my_canvas.copy(exp.items[src_sketchpad].canvas)
          my_canvas.text('You pressed %s' % response)
          my_canvas.show()
  
  # Log the response
  exp.set('responseJOL', response)
  
• sebastiaan

  October 2015 edited 9:31PM

  Hi Susanna,

  There's a bug in canvas.copy() (#355). This will be fixed for 3.0.2, but what you can do for now is the following.

  First, add a custom (and correct) copy function to an inline_script at the start of your experiment:

  def copy_canvas(c1, c2):
  
      """Copy c2 onto c1. Only works for the xpyriment backend."""
  
      c1.set_config(**c2.get_config())
      c1.auto_prepare = c2.auto_prepare
      c1.aa = c2.aa
      c1.prepared = False
      c1.clear()
      c1.stim_list = [stim.copy() for stim in c2.stim_list]
      if c1.auto_prepare:
          c1.prepare()
      c2.prepared = False
  

  Next, update your script to use this copy function (copy_canvas()). You can also simplify the script a bit, using the new 3.0 Python API--but that's not necessary, only neater:

  # The name of the sketchpad to draw on
  src_sketchpad = 'JOL'
  
  # Allowed keys
  allowed_keys = ['0','1','2','3','4','5','6','7','8','9','*']
  
  # Timeout
  timeout = 3000
  
  # Create objects
  my_keyboard = keyboard(keylist=allowed_keys, timeout=3)
  my_synth = synth()
  my_canvas = canvas()
  
  # Collect a response until timeout, show the latest response
  # and play a sound everytime that a response is given
  response = 'timeout'
  start_time = var.get('time_%s' % src_sketchpad)
  while clock.time()-start_time < timeout:
      key, time = my_keyboard.get_key()
      if key is not None:
          response = my_keyboard.to_chr(key)
          my_synth.play()
          copy_canvas(my_canvas, items[src_sketchpad].canvas)
          my_canvas.text('You pressed %s' % response)
          my_canvas.show()
  
  # Set the response
  var.responseJOL = response
  

  Hope this helps!
  Sebastiaan

  
  
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