diff options
| author | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2011-07-31 18:10:27 +0000 |
|---|---|---|
| committer | IOhannes m zmölnig <zmoelnig@iem.at> | 2015-10-14 15:23:30 +0200 |
| commit | 9e541536332d7339c5eec154be6cae736a62120c (patch) | |
| tree | 3bea327817869beba64fffd9a261e5224fcc204c /manual | |
| parent | 411c8cec308759c92d5c85c4cb628e79a427a026 (diff) | |
moved textfile explaining disto~ parameters to 'manual'
svn path=/trunk/externals/unauthorized/; revision=15180
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/disto~.txt | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/manual/disto~.txt b/manual/disto~.txt new file mode 100644 index 0000000..820268a --- /dev/null +++ b/manual/disto~.txt @@ -0,0 +1,54 @@ +Distortion (algorithm 3)
+------------------------
+
+Similar to Distortion (algorithm 1) but uses Hi & Low Pass Filters from
+Filters. Algorithm is HPF -> Distortion -> LPF. There are parameters for
+Hi & Low Pass Filters : hipassfreq & lowpassfreq is the cutoff frequencies,
+and the hipassQ & lowpassQ in the EE kinda definition for bandwidth. The
+larger the Q, the wider the band, and vice versa. The drive controls the
+amount of overdrive. The volume to balance the effect volume with the
+bypassed level. The dry_mix is the volume of input signal & the wet_mix is
+the volume of distorted signal. The feedback sets feedback of distortion.
+
+Controls:
+
+ drive - distortion drive
+ (0<= <=5)
+ dry_mix - dry (unaffected) signal mix
+ (-5<= <=5)
+ wet_mix - wet (affected) signal mix
+ (-5<= <=5)
+ feedback - feedback
+ (-1<= <=1)
+ volume - distortion volume
+ (0=< <=2)
+ hipassfreq - cutoff frequency for hi pass filter
+ (0< <RATE/2)
+ hipassQ - the EE kinda definition for hi pass filter
+ (0< <=1)
+ lowpassfreq - cutoff frequency for low pass filter
+ (0< <RATE/2)
+ lowpassQ - the EE kinda definition for low pass filter
+ (0< <=1)
+
+Work formula implemented in this distortion algorithm is
+out[i] = in[i] * dry + sign(in[i] - in[i-1]) * exp(abs(in[i]) * drive) * wet.
+See. Its do next wave:
+ Normal Sin Wave Wave distorted by algorithm
+ *
+ * *
+ **** * *
+ * * * * *
+ * * * * * *
+ * * * * * *
+* * * * * *
+* * * * *
+------------*------------- ------------*-------------
+ * * * * *
+ * * * * * *
+ * * * * * *
+ * * * * * *
+ * * * * *
+ **** * *
+ * *
+ *
|