[visionegg] Re: sound and visionegg (e.g. portaudio): demo codeavailable?
- From: Christoph Lehmann <lehmann@xxxxxxxxxxxx>
- To: visionegg@xxxxxxxxxxxxx
- Date: Tue, 13 Jan 2004 13:04:55 +0100
many thanks, Christophe, for the C program
I start with auditory fMRI experiments and your code might be an
excellent starting point, especially with the possibility to wait for a
TTL signal on the LPT.... fMRI-ready!!
am I right in the assumption, that your code is (more or less)
platform-independent, since you are using SDL?
what IDE do you use for programming?
did you already try the 2.6 kernel?
cheers
christoph
On Mon, 2003-12-15 at 09:27, Christophe Pallier wrote:
> Christoph Lehmann wrote:
>
> >Christophe, I was just playing around with your python code for sound
> >presentation:
> >one question: what does the
> >
> >
> >
> >> while time.get_ticks()-start > n*SOA:
> >> time.delay(10)
> >>
> >>
> >
> >..I can comment it out, and nothing happens. It is a delay of 10ms, yes,
> >just if the onset of the n-th stimulus is later than it "should"
> >(assuming that on each SOA=2000s the next stimulus shall be played)
> >
> >
>
>
> Ooops, sorry, this should be
>
> while time.get_ticks()-start < n*SOA:
> time.delay(10)
>
>
> which will wait by steps of 10 msec until the time is reached for playing the
> file.
> As I said the timing with this is not precise!
>
> I attach playlist.tar.gz, a small C program using SDL and SDL_mixer that
> does about the same
> but with better control of the timing. Please tell me if you have any
> problem with it.
>
>
> Christophe
--
Christoph Lehmann <lehmann@xxxxxxxxxxxx>
University Hospital of Clinical Psychiatry
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