Introduction and report for week 19/2007



Hi,
as I didn't write my introduction yet this mail includes both, the
introduction and the weekly report, at once ;)

=== Introduction ===
First something about me. I'm a 21 (well, 22 in 10 days) old computer
sciences student[0] in the 6th semester from Paderborn/Germany.

I'm working this year on some GStreamer[1] plugins and extensions which
would help content generation applications (like Jokosher, Buzztard,
pitivi, ...) to be more useful, mostly audio oriented.
The project is split into 7 parts, 3 of them will only be done if time
permits and obviously after the project finished. One of those parts is
the implementation of some audio effect plugins.
The project is mentored by Stefan Kost.


=== Report 19/2007 ===

Until now I've read some literature about DSP, discussed a bit with my
mentor (I already knew him before) and started implementing one of those
7 parts: dithering and noise shaping for GStreamer audioconvert[2]
element. The current state of it can be seen at [3].
There's still one issue to be solved before it is ready which is
explained in the bugreport and I'll try some ideas of how to solve it in
the next days.

I also plan to start with another part in the next days: improving
GstController[4]. This includes implementing two interpolation modes
(quadratic and cubic) that currently just yield an error because they're
not implemented yet, maybe adding a third interpolation mode
(trigonometric) and improving the syncing of parameters by splitting the
incoming buffers at sensible positions.

Apart from that I'll continue to read DSP literature and probably try to
implement some filters for testing that could be used later for the
effects.

Not related to this project I did some GStreamer hacking in the last
days, spent some time with University stuff, cared for some packages in
Debian/Ubuntu and organized some stuff for my new flat (I'll move around
the 25th of May but I don't think this will have any influence on my
project).


Btw, if someone has some more specific questions for me feel free to ask
me on the list or by private mail or on IRC (slomo on GIMPNet, FreeNode
or OFTC).

Bye

[0]http://www.uni-paderborn.de
[1]http://gstreamer.freedesktop.org
[2]http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-audioconvert.html
[3]http://bugzilla.gnome.org/show_bug.cgi?id=360246
[4]http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstController.html

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