Sound to signal a key press

[David McFarlane]

River,

(I have been off on holiday for a few weeks, just getting back into 
the swing of things...)

Hmm, I just posted a response to a problem very much like this in the 
PST Forum (http://support.pstnet.com/forum/Topic3323-8-1.aspx ).  In 
short, yes, it is possible to do what you wish, though not simple (as 
I hinted in my earlier reply).   It will require the use of Extended 
Input, plus some script, Clock.Read, and possibly .IsPending(), 
although .RT, .RTTime, or .RESP should work fine in your case.

So, suppose you want your stimulus image to remain for 2500 ms 
regardless of when the subject responds.  You would set its Duration 
to 0 and its Time Limit to 2500.  You would then follow that with 
inline script, and the script would take care of filling in the 2500 
ms as well as detecting any response and then sounding a beep.  You 
can probably fill in the details from there.

For more info, please look at Appendix C of the User's Guide that 
came with E-Prime (for the Extended Input example), the Clock.Read 
and InputMask.IsPending topics in the online E-Basic Help, and the 
"Process Responses Template" and "Clear Stimulus-Leave More Time for 
Response" samples downloadable from PST.

-- David McFarlane, Professional Faultfinder


At 7/24/2009 07:01 AM Friday, you wrote:

>Firstly, thankyou to Rinus and David for your speedy replies! I have
>be unable to look at your suggestions until now however I have managed
>to get an InLine version to work whereby an image is displayed, a
>keypress response is made and then, once the image is no longer
>displayed (it is displayed for a set duration regardless of responses
>made by the participant) the beep will sound to inform the participant
>that a response was made.
>Although this is on the right track I was hoping to be able to cause a
>beep to be emitted at the same time as a response key is pressed,
>therefore allowing you to press the key again (while the stimulus is
>still being displayed) if the beep didn't sound to signal that a
>response had been recorded.
>
>Do either of you know if this might be possible? I can't seem to find
>a way to put the sound and the image together in a way that the sound
>is contingent on a response to the image being made as well as
>allowing  the sound to occur AS the response is being made.
>
>Thanks again in advance,
>
>River
>
>
>
>On Jun 29, 7:23 pm, David McFarlane <mcfar... at msu.edu> wrote:
> > Are these self-paced trials, with no time limit?  If so, you could
> > just put a SoundOut with a beep.wav after whatever object you use to
> > present your stimulus & get response, e.g.,
> >
> > - TrialProc
> >      - StimSlide
> >      - BeepSound
> >
> > If trials are self-paced but with a time limit, then you could use an
> > If-Then either to make a beep in script as Rinus sugessts (although
> > the E-Basic beep command does not work on some computers), or with a
> > label to skip past the BeepSound, e.g.
> >
> > - TrialProc
> >      - StimSlide
> >      - CheckResponseScript
> >        (If StimSlide.RT = 0 Then goto NoResponseLabel)
> >      - BeepSound
> >      - NoResponseLabel
> >
> > If trials are not self-paced then things get considerably trickier.
> >
> > -- David McFarlane, Professional Faultfinder
> >
> > At 6/27/2009 10:23 AM Saturday, you wrote:
> >
> >
> >
> > >I presume the length is not infinite (otherwise the stimulus will not
> > >go away untill they press)..
> > >Might it be helpful just to do a simple beep with inline? Something in
> > >the line of:
> >
> > >if TextDisplay1.RESP <> "" then beep
> >
> > >(TextDisplay or whatever you're using that is).
> >
> > >Kind regards,
> >
> > >Rinus
> >
> > >On Jun 26, 4:57 pm, River <ll... at medschl.cam.ac.uk> wrote:
> > > > Hi,
> >
> > > > This seems like a potentially simple thing to do but I can't figure it
> > > > out-is it possible to make the computer or SR box emit a beep when a
> > > > response key is pressed?
> > > > Participants will be viewing stimuli on a computer screen and
> > > > responding to it by pressing one of two buttons on the SR box (they
> > > > will press a key on every trial). I'm looking at reaction times so I
> > > > don't want them to have to look down to make sure they have made a
> > > > response (i.e. light flashes by the keys aren't ideal) however its
> > > > been mentioned that a noise to confirm a response has been recorded
> > > > would be useful....
> >
> > > > Does anyone know if this is possible or should I just ask them to
> > > > press the keys down firmly!? I'm currently running version 1 of
> > > > Eprime.
> >
> > > > Many thanks,
> >
> > > > River


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en
-~----------~----~----~----~------~----~------~--~---