audio feedback for mouse click

[Paul Groot]

Hi Becky,

If the mouse responses are collected by the slide objects, this might
be a non-trivial task to do with a single piece of script. The most
straigtforward construction would be something like this:

if Len(Slide1.RESP)>0
  Set SoundOut1SoundBuffer = SoundOut1.Buffers(1)
  SoundOut1.Run
end

But if you do it like this, you will have to create a new inline
script for each unique Slide because the Slide-variable will be
different each time. Even if the audio clip ittself doesn't change.

As a workaround you could place the SoundOut object immediately after
the slides and collect the response with the SoundOut object itself.
The slide should not collect the responses in this case and have a
duration of zero. This would only be acceptable if RT's are not
critical and all response windows have the same duration. (Sidenote:
RT's on touch screens are not very accurate anyway.) Also, if there
are several 'clickable' slides on a single procedure, things become
more complicated if you wan't to log all responses. NB. Having lots of
copies of similar slides within the same experiment is (in most cases)
an indication of a less-optimal (already messy) script.

cheers
Paul


2011/8/3 Becky Clements <cobwebfaery at gmail.com>:
> Hi All,
>
> I am in the process of designing an experiment that will be run on a
> touch screen tablet. I want an short audio file to play when
> participants touch the screen. I know I am able to use the feedback
> slide to do this but there are 10+ tasks each with many many slides
> which would need feedback and as such it would be a very messy way of
> doing it. I am on the hunt for a neater way. I am a coding novice but
> have been programming conditional statements and hittests as part of
> the experiment and was wondering if there was a bit of code I can use
> that will play an audio clip if the mouse response > 0? I have been
> playing around with trying to this but I am not sure if there are
> things I need to define before I can do something like:
>
> If mouse.RESP > "0" Then
>
> AudioFile.Play
>
> All and any help would be much appreciated.
>
> Cheers,
>
> Becky
>
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