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- // Copyright 2006, Thomas Scott Stillwell
- // All rights reserved.
- //
- //Redistribution and use in source and binary forms, with or without modification, are permitted
- //provided that the following conditions are met:
- //
- //Redistributions of source code must retain the above copyright notice, this list of conditions
- //and the following disclaimer.
- //
- //Redistributions in binary form must reproduce the above copyright notice, this list of conditions
- //and the following disclaimer in the documentation and/or other materials provided with the distribution.
- //
- //The name of Thomas Scott Stillwell may not be used to endorse or
- //promote products derived from this software without specific prior written permission.
- //
- //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
- //IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- //FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
- //BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- //(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- //STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- //THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- desc:3x3 3 band EQ with harmonic enhancement
-
- slider1:0<0,100,0.1>lo drive%
- slider2:0<-12,12,0.1>lo gain
- slider3:0<0,100,0.1>mid drive%
- slider4:0<-12,12,0.1>mid gain
- slider5:0<0,100,0.1>hi drive%
- slider6:0<-12,12,0.1>hi gain
- slider7:240<60,680,1>low-mid freq
- slider8:2400<720,12000,10>mid-high freq
-
- @init
- log2db = 8.6858896380650365530225783783321; // 20 / ln(10)
- db2log = 0.11512925464970228420089957273422; // ln(10) / 20
- pi = 3.1415926535;
- halfpi = pi / 2;
- halfpiscaled = halfpi * 1.41254;
-
- @slider
-
- mixl=slider1 / 100;
- mixm=slider3 / 100;
- mixh=slider5 / 100;
- al = min(slider7,srate) / srate;
- ah = max( min(slider8,srate) / srate , al );
- mixl1 = 1 - mixl;
- mixm1 = 1 - mixm;
- mixh1 = 1 - mixh;
- gainl = exp(slider2 * db2log);
- gainm = exp(slider4 * db2log);
- gainh = exp(slider6 * db2log);
- mixlg = mixl * gainl;
- mixmg = mixm * gainm;
- mixhg = mixh * gainh;
- mixlg1 = mixl1 * gainl;
- mixmg1 = mixm1 * gainm;
- mixhg1 = mixh1 * gainh;
-
-
- @sample
-
- dry0 = spl0;
- dry1 = spl1;
-
- lf1h=lfh;
- lfh=dry0 + lfh - ah*lf1h;
- high_l=dry0-lfh*ah;
-
- lf1l=lfl;
- lfl=dry0 + lfl - al*lf1l;
- low_l=lfl*al;
-
- mid_l = dry0 - low_l - high_l;
-
- rf1h=rfh;
- rfh=dry1 + rfh - ah*rf1h;
- high_r=dry1-rfh*ah;
-
- rf1l=rfl;
- rfl=dry1 + rfl - al*rf1l;
- low_r=rfl*al;
-
- mid_r = dry1 - low_r - high_r;
-
- wet0_l = mixlg * sin(low_l * halfpiscaled);
- wet0_m = mixmg * sin(mid_l * halfpiscaled);
- wet0_h = mixhg * sin(high_l * halfpiscaled);
- wet0 = (wet0_l + wet0_m + wet0_h);
-
- dry0_l = low_l * mixlg1;
- dry0_m = mid_l * mixmg1;
- dry0_h = high_l * mixhg1;
- dry0 = (dry0_l + dry0_m + dry0_h);
-
- wet1_l = mixlg * sin(low_r * halfpiscaled);
- wet1_m = mixmg * sin(mid_r * halfpiscaled);
- wet1_h = mixhg * sin(high_r * halfpiscaled);
- wet1 = (wet1_l + wet1_m + wet1_h);
-
- dry1_l = low_r * mixlg1;
- dry1_m = mid_r * mixmg1;
- dry1_h = high_r * mixhg1;
- dry1 = (dry1_l + dry1_m + dry1_h);
-
- spl0 = dry0 + wet0;
- spl1 = dry1 + wet1;
-
-