[solved] Repeat sound

lucie

Hi everybody,

In my experiment, the participants hear stories (via media_player_vlc).
I would want to allow them to listen to the story a second time after the first listening.
Is it possible to make it by using custom_python ? If yes, could you indicate to me how do that or, if I have badly looked for the link towards the resolution of this problem?

Thank you in advance of your help,

Best regards,

Lucie

Edwin

Hi Lucie,

For starters, if people are just listening to the stories, I would use the sampler plug-in, which was specifically designed to play sounds and is more stable then the media_player_vlc plug-in (which was designed for video).

You can use the sampler functions in an inline_script as well:

# load the modules we need
from openexp.canvas import canvas
from openexp.sampler import sampler
from openexp.keyboard import keyboard

# create a new canvas
my_canvas = canvas(exp)

# create a new keyboard
my_keyboard = keyboard(exp)

# path to the sound file
soundfile = exp.get("storyname")
# create a new sampler
my_sampler = sampler(exp, exp.get_file(soundfile))

# play the story
repeatsound = True
while repeatsound:

    # draw a fixation dot on the new canvas
    my_canvas.clear()
    my_canvas.fixdot()
    my_canvas.show()

    # start playing the sound
    my_sampler.play(block=True)

    # present a message
    my_canvas.clear()
    my_canvas.text(Press Space to continue, or R to replay
    my_canvas.show()

    # wait for keyboard input
    key, presstime = my_keyboard.get_key(keylist=['space','r'], timeout=None)

    # if Space was pressed, do not play again
    if key == 'space':
        repeatsound = False

NOTE: this assumes you have the names of the sound files defined in your loop, as variable storyname.

Good luck!

lucie

Hi Edwin,

Thank you for our answer.
The repetition of sounds works now with your script.
But the names of variables in my loop do not work.
My construction is like '[story]_[sound].wav' .
Could you help me for that ?

Thank you in advance of your help,

Best regards,

Lucie

Edwin

Hi Lucie,

Change the bit that finds your sound file from:

soundfile = exp.get("storyname")

to:

soundfile = "%s_%s.wav" % (exp.get("story"), exp.get("sound"))

Does that do it for you?

Good luck!

lucie

Hi Edwin,

Thank you so much for your answer.
Now, everything works as wished

Best regards,

Lucie

Edwin

That's great! Will mark this as solved