reproduction paradigm

srishti_tripathi21 · November 2016

Hi,
How can I record response for reproduction paradigm(in this paradigm sound will be played for particular duration then it will stop and again sound will be played, participates have to stop the sound as the perceived duration elapsed).

eduard · November 2016

Hi again,

Now I get it. That's rather simple. You need two samplers (or however you choose to play the files). In the first one, you set the duration to sound. In the second you set duration to keypress. In this way, the response of how long participants think the first recording lasted will be recorded, but I'm not sure whether the sound will stop playing and this time. Would you mind trying it? If not you will probably be able to fix it with a work around (I can help).

Good luck.

Eduard

srishti_tripathi21 · December 2016

Hello eduard,

First I would like to thank that you replied. My problem still exist, I added two sampler though in the second sampler I set the duration as 'keypress' but the sound is not getting stopped when I am pressing the key.
There is one more problem,in the first sampler I have to play the sound for three different durations (6000ms,12000ms,18000), for that I set the duration as variable [stim_dur] but still every time the complete file is getting played and that is overlapping with the second sampler. Second sampler starts but in the background first sound is keep playing.

regards,
Srishti

eduard · December 2016

Hi Srishti,

The duration field in a sampler is only specifying how long OpenSesame will wait after the sampler began to play before it proceeds with the next item in your sequence. It does not influence the duration of the sound being played. Basically, once the sound starts playing, it continues until its over. And the duration only specifies how long Opensesame waits before executing the following item in the sequence. Usually, these two durations correspond to each other, but not always.

Second sampler starts but in the background first sound is keep playing.

This is what I was afraid of. I suppose for this scenario you will have to do some python scripting and access the playback modules directly. Consider this script for example:

import pygame

# sound initialization
pygame.mixer.init()

# load a sound file
sound = pygame.mixer.Sound(pool['<filename>.wav'])
sound.play()
clock.sleep(6000)
sound.stop()

# or 
sound.play(maxtime= 6000)

This script you would have to put in an inline_script which replaces the sampler item. If you need more information on how the pygame commands work, check out their documentation.

Hope this helped.
Eduard

srishti_tripathi21 · December 2016

Hi eduard,

One more question, as I am a python beginner may I know that like I have to play the same sound for three different durations randomly the same script I have to write again and again for all three durations (6000ms,12000ms, 18000ms) or this is possible in one line script simultaneously.

thankyou!

regard'
srishti

srishti_tripathi21 · December 2016

hi,
I am also facing problem adding two different sound files which I want to play randomly for multiple specific durations.Like for canvas we can give the variable name which we create having different images,what about the many sound files,how can I give all file names in inline script.

Please help I am close to my solution.Thank you so much for the help you have given so far.

srishti_tripathi21 · December 2016

hi,
plz some one help me in this ,how I can write script if I want to play two sound files randomly, because we need to give the path for sampler, how I can add two paths for .ogg file which I wand to play for three multiple durations, kindly let me know how can write script for playing both the sound file for three different durations randomly.

Its very urgent, so far I am keep getting help from eduard and I am very thankful to him.
@eduard @sebastiaan

Most of the time question put up regarding canvas only, my this question may be very helpful for those as well who are working on sampler and would provide clarity regarding this.

waiting for reply
regards,
Srishti

eduard · December 2016

hi Sristhi,

Sorry for the delay, I have been quite busy recently. I'm afraid, I don't quite understand what your problem is exactly. Would you mind rephrasing?

As far as I understand, you wonder how to randomly define the filenames, filepaths, and durations of the sounds? If so, you can simply keep them in the loop table as usual and pick whichever you need.

Edaurd

~~~

srishti_tripathi21 · January 2017

Hi,

What mistake am I doing .It is still showing error in prepare phase.
Here I am uploading my experiment kindly check it out.

Thankyou in advance
Srishti

eduard · January 2017

Hi Srishti,

Without an error message and knowing how your variables var.my_dur and var.stim_type look like, it is virtually impossible to say what is the issue. Would you please add this information?

Eduard

srishti_tripathi21 · January 2017

Hi,

Thanks for being so nice for naive researcher like me. Thankyou for immediate reply that maintains my motivation. stim_type here shows ambi.ogg= ambiguous sound and mean.ogg=meaningful sound, these are the two auditory stimulus I am using in my experinment.These two (stim_type,my_dur) are the variables.

eduard · January 2017

Hi,

Alright, that looks fine. So, which error message do you get?

srishti_tripathi21 · January 2017

Hi,

Here is the image I am uploading.

srishti_tripathi21 · January 2017

Hi,

In the run phase I am getting this error message.

srishti_tripathi21 · January 2017

Hi,

Though I replaced the sound.stop(var.my_dur) with clock.sleep(var.my_dur) error message is there when I am running the inline script

eduard · January 2017

Hi,

in the first script you wrote pygame.mixer.sound(..). Instead it should be a capitalized Sound, like so: pygame.mixer.Sound().

Does it solve it?

Eduard

srishti_tripathi21 · January 2017

Hi,
No it doesn't.

eduard · January 2017

I thought we talked about it. How am I supposed to help you if you don't provide me with any information?
The first error message you had should be gone by now. At least if you implemented the changes that I suggested correctly. So, again, please show me what you changed and what the new error message looks like.

Eduard

srishti_tripathi21 · January 2017

Hi,

Now no error message is showing over there but the things are not working the way I defined it eg:- time duration of the sound is not according to the variable I defined it . I have uploaded my experiment just have a look since it's a larger file I have uploaded it in google drive.

https://drive.google.com/file/d/0B1H1_usmB7ibQ1JjSU1JczktclU/view?usp=sharing

Thankyou

Srishti

eduard · January 2017

Hi,

I changed your experiment. Is it now doing what you want it to do?

Here the link: http://www.filedropper.com/timeexperiment

Btw. your meaningful sound is too short. It stops after 8 seconds.

Let me know if anything is unclear.

Eduard

srishti_tripathi21 · January 2017

Hi,

File is not getting open, showing error the link you sent me.

srishti_tripathi21 · January 2017

Hi,

Forgot to inform you the version (opensesame 3.0, python 2.7, Pygame 1.9.1 )

srishti

eduard · January 2017

Hi Srishti,

DOes this discussion help?

http://forum.cogsci.nl/index.php?p=/discussion/2379/browser-s-seem-to-unpack-osexp-archive-resulting-in-a-failed-to-open-file-error

srishti_tripathi21 · February 2017

Hi eduard,

Now I have understood the problem, kindly send me the corrected file once again so that I can download it from explorer. Because once I have already downloaded it is not getting download again.

thankyou

Srishti

eduard · February 2017

Hi Srishti,

The file was uploaded correctly. Just download it with the internet explorer and you should be good. No need to send it again.

Eduard

Edit: Oh, I just see that the link is down. http://www.filedropper.com/timeexperiment
Here it is again.

srishti_tripathi21 · February 2017

Hi,

If possible upload it on google drive if there isn't any issue, so I easily can download. I tried with explorer but error message remain the same. So please I request you that upload it on google drive.

Sorry for disturbing you so much and thankyou for your patience.

srishti

eduard · February 2017

Alright,

Here is the new link: http://www.filedropper.com/timeexperiment2osexp

I wrapped the Opensesame file first into an archive (.zip), so before you can use it, you have to unzip it. But I tested it now, and it works.

Eduard

srishti_tripathi21 · February 2017

Hi,

Thankyou so much Eduard for your help and patience.Now its working properly.

Srishti

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