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| author | Stefan Kost <ensonic@users.sourceforge.net> | 2007-06-20 10:15:00 +0000 |
|---|---|---|
| committer | Stefan Kost <ensonic@users.sourceforge.net> | 2007-06-20 10:15:00 +0000 |
| commit | 7619871a052c837d76c72ef54314d9c8fae82a9c (patch) | |
| tree | 56a03fe61ba04aae541807f009e446ff264964e5 /gst/equalizer | |
| parent | 3dbc3b7ad1caac2e7fe319a68e3a0864d661681e (diff) | |
| download | gst-plugins-bad-7619871a052c837d76c72ef54314d9c8fae82a9c.tar.gz gst-plugins-bad-7619871a052c837d76c72ef54314d9c8fae82a9c.tar.bz2 gst-plugins-bad-7619871a052c837d76c72ef54314d9c8fae82a9c.zip | |
gst/equalizer/gstiirequalizer.c: Document parameter mapping.
Original commit message from CVS:
* gst/equalizer/gstiirequalizer.c:
Document parameter mapping.
Diffstat (limited to 'gst/equalizer')
| -rw-r--r-- | gst/equalizer/gstiirequalizer.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gst/equalizer/gstiirequalizer.c b/gst/equalizer/gstiirequalizer.c index 926b1e0a..ff11c9e7 100644 --- a/gst/equalizer/gstiirequalizer.c +++ b/gst/equalizer/gstiirequalizer.c @@ -311,9 +311,17 @@ gst_iir_equalizer_finalize (GObject * object) G_OBJECT_CLASS (parent_class)->finalize (object); } -/* args are in the range [-1 ... 1] with 0 meaning "no action" - * convert to [-0.2 ... 1] with 0 meaning no action via the function - * f(x) = 0.25 * 5 ^ x - 0.25 +/* + * converts gain values to scale factors. + * + * arguments are in the range [-1 ... 1] with 0 meaning "no action" + * results are in the range [-0.2 ... 1] with 0 meaning "no action" + * via the function + * f(x) = 0.25 * 5 ^ x - 0.25 + * + * visualize via gnuplot: + * set xrange [-1:1] + * plot 0.25 * exp (log (5) * x) - 0.25 */ static gdouble arg_to_scale (gdouble arg) |