Blank SoundIn recordings & Problem with Win7 and SR-Box

[David McFarlane]

Susanne,

Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
takes any and all questions at 
http://support.pstnet.com/e%2Dprime/support/login.asp , and they 
strive to respond to all requests in 24-48 hours -- this is pretty 
much their substitute for proper documentation, so make full use of 
it.  3) If you do get an answer from PST Web Support, please extend 
the courtesy of posting their reply back here for the sake of others.

That said, here is my take...

Taking the second problem first...  You didn't say what version of EP 
you use.  If EP1, then you need to know that the EP1 SRBox driver 
does not work with anything beyond 32-bit XP.  However, if you 
install the driver from EP2 then it should work with EP1 (at least, 
it does for me on 32-bit Vista).  For more on this, see the PST 
Knowledge Base, e.g., 
http://www.pstnet.com/support/kb.asp?TopicID=1987 , 
http://www.pstnet.com/support/kb.asp?TopicID=3108 , 
http://www.pstnet.com/support/kb.asp?TopicID=3108 , 
http://www.pstnet.com/support/kb.asp?TopicID=4026 .  BTW, I still 
would not use anything beyond 32-bit XP for running subjects for 
time-critical experiments (I use Vista only during development).

Now, as I understand it you want to simultaneously record a voice 
response and get the RT for the onset of the voice response.  For 
that, at a minimum you will need either two microphones, or one 
microphone with the cable split to go simultaneously to both the 
voicekey input of the SRBox *and* the sound input of your PC.  As you 
have already discovered & noted, the SRBox microphone/voicekey input 
does *not* pass on sound to the PC, it acts only as the voicekey 
(just think about it, and the fact that the SRBox is attached to the 
PC only via a serial cable); and the sound input of the PC does *not* 
act as a voicekey, it only receives raw sound from the 
microphone.  So you need to do both.  I hope that clarifies things a bit.

-- David McFarlane, Yankee Faultfinder
"For a successful technology, reality must take precedence over 
public relations, for nature cannot be fooled."  (Richard Feynman, 
Nobel prize-winning physicist)


At 5/28/2011 02:30 PM Saturday, Susanne wrote:
>Hi,
>
>I've got two problems that I need help with:
>
>In my experiment I'd like students to name pictures. I want to get the
>RT and record their responses.
>I work with a SR Box from PST (Model 200a) with a dynamic microphone.
>I get the RT of each picture but the problem is that even though e-
>prime creates soundfiles their is no sound played (they are blank). I
>tested if the loudspeakers are the problem, but normally the sound
>works perfectly.
>
>I also tested a simple headphone which in plugged into the normal
>microphone slot in my computer. Now e-prime creates soundfiles with
>sound, but the RT is not collected. (Even when changing the
>sensitivity).
>
>Still I'd like to use the SR-Box with mic to collect the data.
>Does anybody now why there is no sound in the soundfiles created with
>e-prime and the SR-box?
>
>
>Another problem is that I also want to use the SR-Box with my laptop.
>Thus I bought a Serial-USB converter. The problem is that my laptop is
>equipped witg Windows7 64bit Version. When I want to install the
>normal SR-Box driver an error occurs:
>
>The installation FAILED with the follwing information:
>Error: -3
>Extended: -536870347
>
>I changed the settings in e-prime and the converter so that they use
>the same "COM1"-settings. Thus I think the problem is Win7. I now that
>some people use e-prime with Win7. How do they do it? Is there a new
>driver that works with Win7?
>
>Thanks for your help,
>Best wishes from Germany
>Susanne

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