[sugar] generate clean tone to speakers (first prototype of working EKG around the XO )
Walter Bender
walter at laptop.org
Wed Apr 2 07:25:04 EDT 2008
there is a simple example in Pippy as well.
-walter
On Wed, Apr 2, 2008 at 1:14 AM, Arjun Sarwal <arjun at laptop.org> wrote:
> Tom,
>
> >
> > Arjun, could you suggest an activity that gives a good clean example of
> > sending sound to the speakers? Thanks.
> >
> >
> You could use gstreamer (the same package the measure uses to grab audio data)
> to create a pipeline, a command line example is below which generates
> a sine of 500Hz
>
> gst-launch-0.10 audiotestsrc wave=sine freq=500 ! audioconvert ! alsasink
>
> In python you could create a pipeline and implement it similar lines
> to that given in audiograb.py in the Measure code.
>
>
> I think it is possible to generate tones using Csound too and perhaps
> other Activities are doing it, but I'm not aware of them.
>
>
> regards
> Arjun
>
> ---
> Arjun Sarwal
> Intern at One Laptop per Child
> <arjun at laptop.org>
> http://laptop.org/
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--
Walter Bender
One Laptop per Child
http://laptop.org
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