home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
PC World 2008 February
/
PCWorld_2008-02_cd.bin
/
audio-video
/
reaper
/
reaper2028-install.exe
/
Effects
/
SStillwell
/
stereowidth
< prev
next >
Wrap
Text File
|
2007-12-03
|
3KB
|
71 lines
// Copyright 2007, 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.
//
//Contains code from stereoField (c) 2007 by Michael Gruhn, used by permission
//
desc:Stereo Width
slider1:0<-20,20>Width boost
slider2:0<-20,20>Center boost
slider3:0<-20,20>Gain
slider4:0<-100,100>Width Balance
slider5:0<-90,90>Width Rotation
@init
log2db = 8.6858896380650365530225783783321; // 20 / ln(10)
db2log = 0.11512925464970228420089957273422; // ln(10) / 20
pi = 3.1415926535;
halfpi = pi / 2;
@slider
wideboost=exp(slider1 * db2log);
centerboost=exp(slider2 * db2log);
gain=exp(slider3 * db2log);
leftrot = cos(((slider4+100)*0.005)*halfpi) * 2;
rightrot = sin(((slider4+100)*0.005)*halfpi) * 2;
rot=slider5*0.017453292;
@sample
center = (spl0 + spl1) * 0.5;
left = spl0 - center;
right = spl1 - center;
spl0 += left * wideboost * leftrot;
spl1 += right * wideboost * rightrot;
spl0 += center * centerboost;
spl1 += center * centerboost;
spl0 *= gain;
spl1 *= gain;
s0 = sign(spl0);
s1 = sign(spl1);
angle = atan( spl0 / spl1 );
(s0 == 1 && s1 == -1) || (s0 == -1 && s1 == -1) ? angle += pi;
(s0 == -1 && s1 == 1) ? angle += 2 * pi;
(spl1 == 0) ? (spl0 > 0) ? angle = halfpi : angle = pi + halfpi;
(spl0 == 0) ? (spl1 > 0) ? angle = 0 : angle = pi;
angle -= rot;
radius = sqrt( sqr(spl0)+sqr(spl1) ) ;
spl0 = sin(angle)*radius;
spl1 = cos(angle)*radius;