21 Jul
2011
21 Jul
'11
4:16 a.m.
On Wed, 20 Jul 2011 14:33:53 +0200, Dragan Noveski <perodog(a)gmx.net> wrote:
BTW. what is used for analysis here? i mean it is
analysing my files
pretty fast.
Grainmap uses the aubio library [1] for onset detection, libsamplerate
[2] and a simple envelope follower to resample the audio to screen size,
the Jigsaw Map algorithm detailed in [3] with Doug Moore's Hilbert curve
implementation [4], and the linear-time five-coloring algorithm
described at the beginning of [5] for choosing region colors.
[1] http://aubio.org/
[2] http://www.mega-nerd.com/SRC/
[3] Martin Wattenberg. 2005. A Note on Space-Filling Visualizations
and Space-Filling Curves.
http://www.research.ibm.com/visual/papers/158-wattenberg-final3.pdf
[4] http://www.tiac.net/~sw/2008/10/Hilbert/moore/
[5] Neil Robertson, Daniel P. Sanders, Paul Seymour, and Robin
Thomas. 1996. Efficiently four-coloring planar graphs.
http://people.math.gatech.edu/~thomas/OLDFTP/fcdir/fcstoc.ps
Cheers,
Caleb