Continuing SoundOut with changing Word display

[Mike]

If you use the SoundOut1.Play inlin is there another inlin to turn off
the sound file?

Thanks!

On Feb 11, 1:08 pm, David McFarlane <mcfar... at msu.edu> wrote:
> Mike,
>
> At 2/8/2008 03:07 PM Friday, you wrote:
>
> >I want to play a .wav file throughout the
> >experiment. I don't want it to begin and end on each trial but to
> >actually last for the entire block of the lexical decision task. There
> >doesn't need to be any allowable response made what's played on
> >the .wav file, I just want it to play in the background. Is there a
> >way to do this?
>
> I can think of two ways to do this, maybe somebody else can come up
> with something better.  The first way takes advantage of standard
> properties of the SoundOut object, and the second uses inline script.
>
> (1)  The key here is that the duration of an object that plays a
> sound is distinct from the duration of the sound that the object
> plays, and either one can be longer than the other.  So, e.g, if you
> set the duration of a SoundOut object to 0 and set StopAfter to No,
> then the SoundOut object will start playing the sound, then the
> object will end while the sound continues playing.  Your program may
> then do something else while the sound keeps playing.
>
> (2) In inline script you can use something like SoundOut1.Play.  This
> will simply start playing the sound and then continue your program
> while the sound plays (you will still need a SoundOut1 or whatever
> object in Unreferenced E-Objects or somewhere).  In fact, as the
> online E-Basic 1.1 help itself says in its description of the
> SoundOut.Play method, "Playback is asynchronous, (e.g. the .wav file
> begins playing and then program execution continues with the next
> object in the procedure)...  Playback is not affected by the Duration
> property of the SoundOut object", and, "SoundOut.Play differs from
> SoundOut.Run, which is not asynchronous and may or may not play the
> entire file, depending upon the values for the Duration and StopAfter
> properties" (SoundOut.Run is what happens when you have a SoundOut
> object in your E-Studio structure).
>
> The script method is a bit cleaner, and for all I know is slightly
> more efficient with computer resources.  On the other hand, script
> obscures the structure of your experiment, and it may require objects
> sitting mysteriously in the Unreferenced E-Objects area of the
> E-Studio structure view.  Using a SoundOut object with duration 0 and
> no Stop After has the virtue that it is plainly visible in the
> structure view of your experiment.  It's up to you.
>
> -- David McFarlane, Systems Designer
>     Dept. Psychology, Michigan State University
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