playing SoundIn audio within the same trial

[David McFarlane]

Alon,

Wow, thanks for posting this documentation -- I do not yet use 
SoundIn (although I have to write a lesson on it shortly!), but I 
might find this useful some time.  As to your questions..

First, it seems to me that these belong to PST Web Support 
(http://support.pstnet.com/e%2Dprime/support/login.asp ), so I hope 
you post them there as well (and post back here with their 
response).  Anyway, here is my take...

>My questions are:
>1) Why when I change the sound capture filename to "temp.wav" is the 
>script successful (even though the SaveToFile method is called at 
>the end of the procedure again so is overwriting the temp.wav file), 
>whereas without changing the filename, I get an error?

I have no idea, I think we will have to leave this one to PST.

>2) Was there an easier way to do this?

Again, I have no experience yet with SoundIn.  But I would guess that 
instead of using the @Auto automatic file naming you could generate 
file names yourself in your code and that might avoid the "write 
fail" problem.  Since you already use inline code to handle playing 
the captured audio, generating your own file names should add no 
extra burden.  Sometimes all that extra "automation" just gets in the 
way, I like to turn it all off and supply my own code.

>3) Is there documentation on the properties of the SoundIn object 
>available in E-basic? I couldn't find any in the E-Basic help,

Indeed, the E-Basic Help lacks a SoundIn topic, and topics for any 
new features of EP2.  As far as I can tell, the EB Help in EP2 
contains exactly the same content as for EP1.  No telling when PST 
will supply us the missing documentation, but if you contact Web 
Support they will often supply documentation privately on a "need to 
know" basis.  If you get that, then please make that documentation 
public here.  Thanks.

>  so had to figure it out by looking at the compiled script.

Indeed, that is how I have figured out a *lot* of how EP actually 
works, even with the EB Help on hand (and that learning process works 
a *lot* better with good-old EP1 than with EP2).  And as I have said 
elsewhere, beware that the EB Help is incomplete, and in some cases 
misleading or just plain wrong, so you have to test everything out 
for yourself.

>For example, it would be nice to know if there is a way to play the 
>SoundCaptureBuffer before it is saved to file

I suspect there is no such method, and no plan to add one.  Again, a 
question best handled by PST staff.

>(I tried a SoundIn1SoundCaptureBuffer.Play method but it didn't work).

Nice bit of hacking for you to try the method anyway, sometimes you 
do uncover undocumented features that way ;).

>4) A separate and minor question, but can you specify the filename 
>for the SoundOUT object at runtime (so I don't have to do it by way 
>of an attribute)?

SoundOut file names are actually handled by an associated SoundBuffer 
object, using the .Filename property and .Load method.  See the 
SoundBuffer topic in the EB Help, and look at the code that E-Studio 
generates for any SoundOut object.

Regards,
-- David McFarlane, Professional Faultfinder

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