diff options
| author | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2003-08-16 17:08:55 +0000 |
|---|---|---|
| committer | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2003-08-16 17:08:55 +0000 |
| commit | 506b8e7dedb80d79bf015e47d92e8b8dd8284584 (patch) | |
| tree | 6393e98add0a0ae7f92388665b3b6242977f5b64 /disto~/distort3.txt | |
| parent | 856eaf396d9a4d371a458a2c373a052bb72c8057 (diff) | |
added files straight from Yves' sources
svn path=/trunk/externals/unauthorized/; revision=864
Diffstat (limited to 'disto~/distort3.txt')
| -rw-r--r-- | disto~/distort3.txt | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/disto~/distort3.txt b/disto~/distort3.txt new file mode 100644 index 0000000..e25d857 --- /dev/null +++ b/disto~/distort3.txt @@ -0,0 +1,54 @@ +Distortion (algorithm 3)
+þþþþþþþþþþþþþþþþþþþþþþþþ
+
+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
+ *
+ * *
+ **** * *
+ * * * * *
+ * * * * * *
+ * * * * * *
+* * * * * *
+* * * * *
+------------*------------- ------------*-------------
+ * * * * *
+ * * * * * *
+ * * * * * *
+ * * * * * *
+ * * * * *
+ **** * *
+ * *
+ *
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