some more ugens

svn path=/trunk/externals/tb/; revision=1902

10 files changed, 1122 insertions, 11 deletions

diff --git a/sc4pd/gpl.txt b/sc4pd/gpl.txt
new file mode 100644
index 0000000..5ea29a7
--- /dev/null
+++ b/sc4pd/gpl.txt
@@ -0,0 +1,346 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+ 
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
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+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
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+
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
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+Activities other than copying, distribution and modification are not
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+You may charge a fee for the physical act of transferring a copy, and
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+			    NO WARRANTY
+
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+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
diff --git a/sc4pd/make-files.txt b/sc4pd/make-files.txt
index 8c45378..49ba19b 100755
--- a/sc4pd/make-files.txt
+++ b/sc4pd/make-files.txt
@@ -9,4 +9,4 @@ SRCS= \
 	Logistic.cpp Latoocarfian.cpp LinCong.cpp amclip.cpp scaleneg.cpp \
 	excess.cpp hypot.cpp ring1.cpp ring2.cpp ring3.cpp ring4.cpp \
 	difsqr.cpp sumsqr.cpp sqrdif.cpp sqrsum.cpp absdif.cpp LFSaw.cpp \
-	LFPulse.cpp
\ No newline at end of file
+	LFPulse.cpp Impulse.cpp Integrator.cpp Decay.cpp
\ No newline at end of file
diff --git a/sc4pd/pd/impulse.pd b/sc4pd/pd/impulse.pd
new file mode 100644
index 0000000..5381863
--- /dev/null
+++ b/sc4pd/pd/impulse.pd
@@ -0,0 +1,31 @@
+#N canvas 0 0 782 300 10;
+#X obj 93 170 dac~;
+#X obj 108 75 sig~ 440;
+#X floatatom 227 53 5 0 0 0 - - -;
+#X msg 20 31 kr;
+#X msg 62 30 ar;
+#X floatatom 363 150 5 0 0 0 - - -;
+#X obj 343 235 timer;
+#X floatatom 343 267 5 0 0 0 - - -;
+#X obj 353 197 t b b;
+#X msg 402 29 0.1;
+#X msg 451 39 kr 10;
+#X msg 223 88 freq \$1;
+#X obj 373 128 change;
+#X obj 107 117 Impulse~ 440 ar;
+#X obj 376 89 Impulse 1 20;
+#X connect 1 0 13 0;
+#X connect 2 0 11 0;
+#X connect 3 0 13 0;
+#X connect 4 0 13 0;
+#X connect 5 0 8 0;
+#X connect 6 0 7 0;
+#X connect 8 0 6 0;
+#X connect 8 1 6 1;
+#X connect 9 0 14 0;
+#X connect 10 0 14 0;
+#X connect 11 0 13 0;
+#X connect 12 0 5 0;
+#X connect 13 0 0 0;
+#X connect 13 0 0 1;
+#X connect 14 0 12 0;
diff --git a/sc4pd/pd/integrator.pd b/sc4pd/pd/integrator.pd
new file mode 100644
index 0000000..3c8719d
--- /dev/null
+++ b/sc4pd/pd/integrator.pd
@@ -0,0 +1,21 @@
+#N canvas 0 0 450 300 10;
+#X obj 12 159 dac~;
+#X obj 89 131 print~;
+#X obj 144 112 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X floatatom 112 20 5 0 0 0 - - -;
+#X floatatom 265 37 9 0 0 0 - - -;
+#X floatatom 266 110 9 0 0 0 - - -;
+#X obj 18 86 Integrator~ 0.3;
+#X msg 89 60 leak \$1;
+#X obj 18 28 Dust~ 441;
+#X obj 266 78 Integrator 0.5;
+#X connect 2 0 1 0;
+#X connect 3 0 7 0;
+#X connect 4 0 9 0;
+#X connect 6 0 1 0;
+#X connect 6 0 0 0;
+#X connect 6 0 0 1;
+#X connect 7 0 6 0;
+#X connect 8 0 6 0;
+#X connect 9 0 5 0;
diff --git a/sc4pd/pd/mantissamask.pd b/sc4pd/pd/mantissamask.pd
index 5e2d3ed..b99ca00 100644
--- a/sc4pd/pd/mantissamask.pd
+++ b/sc4pd/pd/mantissamask.pd
@@ -4,18 +4,18 @@
 #X obj 89 131 print~;
 #X obj 144 112 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
 -1;
-#X obj 18 86 MantissaMask~ 3;
 #X floatatom 112 20 5 0 0 0 - - -;
-#X msg 89 60 set \$1;
 #X floatatom 265 37 9 0 0 0 - - -;
 #X floatatom 266 110 9 0 0 0 - - -;
 #X obj 266 78 MantissaMask 0;
-#X connect 0 0 4 0;
+#X obj 18 86 MantissaMask~ 3;
+#X msg 89 60 set \$1;
+#X connect 0 0 8 0;
 #X connect 3 0 2 0;
-#X connect 4 0 2 0;
-#X connect 4 0 1 0;
-#X connect 4 0 1 1;
-#X connect 5 0 6 0;
-#X connect 6 0 4 0;
-#X connect 7 0 9 0;
+#X connect 4 0 9 0;
+#X connect 5 0 7 0;
+#X connect 7 0 6 0;
+#X connect 8 0 2 0;
+#X connect 8 0 1 0;
+#X connect 8 0 1 1;
 #X connect 9 0 8 0;
diff --git a/sc4pd/source/Decay.cpp b/sc4pd/source/Decay.cpp
new file mode 100644
index 0000000..95bc22e
--- /dev/null
+++ b/sc4pd/source/Decay.cpp
@@ -0,0 +1,218 @@
+/* sc4pd 
+   Decay~, Decay
+
+   Copyright (c) 2004 Tim Blechmann.                                       
+
+   This code is derived from:
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,             
+   but WITHOUT ANY WARRANTY; without even the implied warranty of         
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+   Based on:
+     PureData by Miller Puckette and others.
+         http://www.crca.ucsd.edu/~msp/software.html
+     FLEXT by Thomas Grill
+         http://www.parasitaere-kapazitaeten.net/ext
+     SuperCollider by James McCartney
+         http://www.audiosynth.com
+     
+   Coded while listening to: AMM: AMMMusic 1966
+   
+*/
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+/* ------------------------ Decay~ -----------------------------*/
+
+class Decay_ar
+    :public flext_dsp
+{
+    FLEXT_HEADER(Decay_ar,flext_dsp);
+
+public:
+    Decay_ar(int argc,t_atom * argv);
+
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+    virtual void m_dsp(int n, t_sample *const *in, t_sample *const *out);
+    void m_set(float f);
+
+private:
+    FLEXT_CALLBACK_F(m_set);
+    float m_b1;                       //leak
+    float m_y1;                       //z-1
+    float decayTime;
+};
+
+FLEXT_LIB_DSP_V("Decay~",Decay_ar);
+
+Decay_ar::Decay_ar(int argc,t_atom * argv)
+{
+    FLEXT_ADDMETHOD_(0,"decayTime",m_set);
+
+    AtomList Args(argc,argv);
+
+    m_b1 = sc_getfloatarg(Args,0);
+
+    AddOutSignal();
+
+    m_y1 = 0.f;
+}
+
+void Decay_ar::m_signal(int n, t_sample *const *in, 
+				t_sample *const *out)
+{
+    t_sample *nout = *out;
+    t_sample *nin = *in;
+
+    float b1 = m_b1;
+    float y1 = m_y1;
+
+    if (b1 == m_b1) 
+    {
+	if (b1 == 1.f) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + y1;
+	    }
+	    
+	} 
+	else if (b1 == 0.f) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0;
+	    }
+	} 
+	else 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * y1;
+	    }
+	}
+    } 
+    else 
+    {
+	float b1_slope = CALCSLOPE(m_b1, b1);
+	if (b1 >= 0.f && m_b1 >= 0) 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * (y1 - y0);
+		b1 += b1_slope;
+	    }
+	} 
+	else if (b1 <= 0.f && m_b1 <= 0) 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * (y1 + y0);
+		b1 += b1_slope;
+	    }
+	} 
+	else 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = (1.f - fabs(b1)) * y0 + b1 * y1;
+		b1 += b1_slope;
+	    }
+	}
+    }
+    m_y1 = zapgremlins(y1);
+}
+    
+void Decay_ar::m_set(float f)
+{
+    decayTime = f;
+    m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate()));
+}
+
+void Decay_ar::m_dsp(int n, t_sample *const *in, t_sample *const *out)
+{
+    m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate()));
+}
+
+/* todo: does it make sense to implement a message-based Decay? 
+   Probably not... */
+
+
+/* ------------------------ Decay ------------------------------*/
+
+// class Decay_kr
+//     :public flext_base
+// {
+//     FLEXT_HEADER(Decay_kr,flext_base);
+
+// public:
+//     Decay_kr(int argc,t_atom * argv);
+
+// protected:
+//     void m_set(float f);
+//     void m_perform(float f);
+    
+// private:
+//     float m_b1;                       //leak
+//     float m_y1;                       //z-1
+
+//     FLEXT_CALLBACK_F(m_set);
+//     FLEXT_CALLBACK_F(m_perform);
+// };
+
+// FLEXT_LIB_V("Decay",Decay_kr);
+
+// Decay_kr::Decay_kr(int argc,t_atom * argv)
+// {
+//     AtomList Args(argc,argv);
+
+//     m_b1 = sc_getfloatarg(Args,0);
+//     m_y1 = 0.f;
+
+    
+//     AddInFloat();
+//     AddOutFloat();
+
+//     FLEXT_ADDMETHOD(0,m_perform);
+//     FLEXT_ADDMETHOD_(0,"leak",m_set);
+// }
+
+// void Decay_kr::m_perform(float f)
+// {
+//     m_y1 = f + m_y1 * m_b1;
+//     ToOutFloat(0,m_y1);
+// }
+
+// void Decay_kr::m_set(float f)
+// {
+//     m_b1=f;
+// }
diff --git a/sc4pd/source/Impulse.cpp b/sc4pd/source/Impulse.cpp
new file mode 100644
index 0000000..277ad34
--- /dev/null
+++ b/sc4pd/source/Impulse.cpp
@@ -0,0 +1,271 @@
+/* sc4pd 
+   Impulse, Impulse~
+
+   Copyright (c) 2004 Tim Blechmann.
+
+   This code is derived from:
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+   Based on:
+     PureData by Miller Puckette and others.
+         http://www.crca.ucsd.edu/~msp/software.html
+     FLEXT by Thomas Grill
+         http://www.parasitaere-kapazitaeten.net/ext
+     SuperCollider by James McCartney
+         http://www.audiosynth.com
+     
+   Coded while listening to: AMM: AMMMusic 1966
+   
+*/
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+/* todo: implement phase offset as in sc3
+/* ------------------------ Impulse~ -------------------------------*/
+
+class Impulse_ar:
+    public flext_dsp
+{
+    FLEXT_HEADER(Impulse_ar,flext_dsp);
+    
+public:
+    Impulse_ar(int argc, t_atom *argv);
+    
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out)
+    {
+	m_signal_fun(n,in,out);
+    }
+    virtual void m_dsp(int n, t_sample *const *in, t_sample *const *out);
+
+    void m_set(float f)
+    {
+	m_freq=f;
+    }
+    
+    void m_ar()
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_ar));
+    }
+
+    void m_kr()
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_kr));
+    }
+    
+private:
+    double mPhase, mPhaseOffset;
+    float mFreqMul;
+    float m_freq;      //for kr arguments
+
+    DEFSIGCALL (m_signal_fun);
+    DEFSIGFUN (m_signal_ar);
+    DEFSIGFUN (m_signal_kr);
+    
+    FLEXT_CALLBACK_F(m_set);
+    FLEXT_CALLBACK(m_ar);
+    FLEXT_CALLBACK(m_kr);
+};
+
+FLEXT_LIB_DSP_V("Impulse~",Impulse_ar);
+
+Impulse_ar::Impulse_ar(int argc, t_atom *argv)
+{
+    FLEXT_ADDMETHOD_(0,"freq",m_set);
+    FLEXT_ADDMETHOD_(0,"ar",m_ar);
+    FLEXT_ADDMETHOD_(0,"kr",m_kr);
+
+    //parse arguments
+    AtomList Args(argc,argv);
+    
+    m_freq = sc_getfloatarg(Args,0);
+    
+    if(sc_ar(Args))
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_ar));
+    else // if not given, use control rate
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_kr)); 
+    
+    AddOutSignal();
+}    
+
+void Impulse_ar::m_dsp(int n, t_sample *const *in, t_sample *const *out)
+{
+    mFreqMul = 1 / Samplerate();
+    
+}
+
+void Impulse_ar::m_signal_ar(int n, t_sample *const *in, 
+	 		   t_sample *const *out)
+{
+    t_sample *freq = *in;
+    t_sample *xout = *out;
+    
+    float freqmul = mFreqMul;
+    double phase = mPhase;
+    
+    for (int i = 0; i!= n;++i)
+    {
+	float z;
+	if (phase >= 1.f) 
+	{
+	    phase -= 1.f;
+	    z = 1.f;
+	} 
+	else 
+	{
+	    z = 0.f;
+	}
+	phase += (*(freq)++) * freqmul;
+	(*(xout)++) = z;
+    }
+
+    mPhase=phase;
+}
+
+
+void Impulse_ar::m_signal_kr(int n, t_sample *const *in, 
+			   t_sample *const *out)
+{
+    t_sample *xout = *out;
+    
+    float freq = m_freq * mFreqMul;
+    float freqmul = mFreqMul;
+    double phase = mPhase;
+    
+    for (int i = 0; i!= n;++i)
+    {
+	float z;
+	if (phase >= 1.f) 
+	{
+	    phase -= 1.f;
+	    z = 1.f;
+	} 
+	else 
+	{
+	    z = 0.f;
+	}
+	phase += freq;
+	(*(xout)++) = z;
+    }
+
+    mPhase=phase;
+}
+
+/* ------------------------ Impulse ---------------------------------*/
+
+/* todo: remove obsolete messages */
+
+class Impulse_kr:
+    public flext_base
+{
+    FLEXT_HEADER(Impulse_kr,flext_base);
+
+public:
+    Impulse_kr(int argc, t_atom *argv);
+    
+protected:
+    void m_perform(void*);
+
+    void m_set(float f)
+    {
+	m_freq_set = f;
+	m_freq = f * mFreqMul;
+    }
+
+    void m_set_kr(float f)
+    {
+	if (f != 0)
+	{
+	    dt = f * 0.001;
+ 	    mFreqMul = dt;
+	    m_freq = m_freq_set * mFreqMul;
+	    m_timer.Reset();
+	    m_timer.Periodic(dt);
+	}
+    }
+
+private:
+
+    double mPhase, mPhaseOffset;
+    float mFreqMul;
+    float m_freq;      //for kr arguments
+
+    float dt;
+    float m_freq_set;
+
+    Timer m_timer;
+
+    FLEXT_CALLBACK_F(m_set_kr);
+    FLEXT_CALLBACK_F(m_set);
+    FLEXT_CALLBACK_T(m_perform);
+};
+
+
+FLEXT_LIB_V("Impulse",Impulse_kr);
+
+Impulse_kr::Impulse_kr(int argc, t_atom *argv)
+{
+    FLEXT_ADDMETHOD(0,m_set);
+    FLEXT_ADDMETHOD_(0,"kr",m_set_kr);
+
+    FLEXT_ADDTIMER(m_timer,m_perform);
+
+    AddOutFloat();
+
+    //parse arguments
+    AtomList Args(argc,argv);
+
+    m_freq_set = sc_getfloatarg(Args,0);
+    
+    dt = sc_getfloatarg(Args,1) * 0.001;
+    
+    if (dt == 0)
+	dt = 0.02;  // 20 ms as default control rate as in line
+    mFreqMul = dt; 
+    
+    m_freq = m_freq_set * mFreqMul;
+    
+    m_timer.Periodic(dt);
+    
+}
+
+void Impulse_kr::m_perform(void*)
+{
+    float z;
+    if (mPhase >= 1.f) 
+    {
+	mPhase -= 1.f;
+	z = 1.f;
+    } 
+    else 
+    {
+	z = 0.f;
+    }
+
+    mPhase += m_freq;
+    ToOutFloat(0,z);
+}
diff --git a/sc4pd/source/Integrator.cpp b/sc4pd/source/Integrator.cpp
new file mode 100644
index 0000000..75bb350
--- /dev/null
+++ b/sc4pd/source/Integrator.cpp
@@ -0,0 +1,206 @@
+/* sc4pd 
+   Integrator~, Integrator
+
+   Copyright (c) 2004 Tim Blechmann.                                       
+
+   This code is derived from:
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,             
+   but WITHOUT ANY WARRANTY; without even the implied warranty of         
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+   Based on:
+     PureData by Miller Puckette and others.
+         http://www.crca.ucsd.edu/~msp/software.html
+     FLEXT by Thomas Grill
+         http://www.parasitaere-kapazitaeten.net/ext
+     SuperCollider by James McCartney
+         http://www.audiosynth.com
+     
+   Coded while listening to: AMM: AMMMusic 1966
+   
+*/
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+/* ------------------------ Integrator~ -----------------------------*/
+
+class Integrator_ar
+    :public flext_dsp
+{
+    FLEXT_HEADER(Integrator_ar,flext_dsp);
+
+public:
+    Integrator_ar(int argc,t_atom * argv);
+
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+    void m_set(float f);
+
+private:
+    FLEXT_CALLBACK_F(m_set);
+    float m_b1;                       //leak
+    float m_y1;                       //z-1
+};
+
+FLEXT_LIB_DSP_V("Integrator~",Integrator_ar);
+
+Integrator_ar::Integrator_ar(int argc,t_atom * argv)
+{
+    FLEXT_ADDMETHOD_(0,"leak",m_set);
+
+    AtomList Args(argc,argv);
+
+    m_b1 = sc_getfloatarg(Args,0);
+
+    AddOutSignal();
+
+    m_y1 = 0.f;
+}
+
+void Integrator_ar::m_signal(int n, t_sample *const *in, 
+				t_sample *const *out)
+{
+    t_sample *nout = *out;
+    t_sample *nin = *in;
+
+    float b1 = m_b1;
+    float y1 = m_y1;
+
+    if (b1 == m_b1) 
+    {
+	if (b1 == 1.f) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + y1;
+	    }
+	    
+	} 
+	else if (b1 == 0.f) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0;
+	    }
+	} 
+	else 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * y1;
+	    }
+	}
+    } 
+    else 
+    {
+	float b1_slope = CALCSLOPE(m_b1, b1);
+	if (b1 >= 0.f && m_b1 >= 0) 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * (y1 - y0);
+		b1 += b1_slope;
+	    }
+	} 
+	else if (b1 <= 0.f && m_b1 <= 0) 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = y0 + b1 * (y1 + y0);
+		b1 += b1_slope;
+	    }
+	} 
+	else 
+	{
+	    for (int i = 0; i!= n;++i) 
+	    {
+		float y0 = (*(nin)++); 
+		(*(nout)++) = y1 = (1.f - fabs(b1)) * y0 + b1 * y1;
+		b1 += b1_slope;
+	    }
+	}
+    }
+    m_y1 = zapgremlins(y1);
+}
+    
+void Integrator_ar::m_set(float f)
+{
+    m_b1=f;
+}
+
+/* ------------------------ Integrator ------------------------------*/
+
+class Integrator_kr
+    :public flext_base
+{
+    FLEXT_HEADER(Integrator_kr,flext_base);
+
+public:
+    Integrator_kr(int argc,t_atom * argv);
+
+protected:
+    void m_set(float f);
+    void m_perform(float f);
+    
+private:
+    float m_b1;                       //leak
+    float m_y1;                       //z-1
+
+    FLEXT_CALLBACK_F(m_set);
+    FLEXT_CALLBACK_F(m_perform);
+};
+
+FLEXT_LIB_V("Integrator",Integrator_kr);
+
+Integrator_kr::Integrator_kr(int argc,t_atom * argv)
+{
+    AtomList Args(argc,argv);
+
+    m_b1 = sc_getfloatarg(Args,0);
+    m_y1 = 0.f;
+
+    
+    AddInFloat();
+    AddOutFloat();
+
+    FLEXT_ADDMETHOD(0,m_perform);
+    FLEXT_ADDMETHOD_(0,"leak",m_set);
+}
+
+void Integrator_kr::m_perform(float f)
+{
+    m_y1 = f + m_y1 * m_b1;
+    ToOutFloat(0,m_y1);
+}
+
+void Integrator_kr::m_set(float f)
+{
+    m_b1=f;
+}
diff --git a/sc4pd/source/main.cpp b/sc4pd/source/main.cpp
index 7b16ccb..bc8af2a 100644
--- a/sc4pd/source/main.cpp
+++ b/sc4pd/source/main.cpp
@@ -62,7 +62,9 @@ void sc4pd_library_setup()
 	 "ring1(~),\n"
 	 "          ring2(~), ring3(~), ring4(~), difsqr(~), sumsqr(~), "
 	 "sqrdif(~),\n"
-	 "          sqrsum(~), absdif(~), LFSaw(~), LFPulse(~)");
+	 "          sqrsum(~), absdif(~), LFSaw(~), LFPulse(~), Impulse(~),\n"
+	 "          Integrator(~), Decay~\n"
+	 );
 
     //initialize objects
     FLEXT_DSP_SETUP(Dust_ar);
@@ -189,6 +191,14 @@ void sc4pd_library_setup()
 
     FLEXT_DSP_SETUP(LFPulse_ar);
     FLEXT_SETUP(LFPulse_kr);
+
+    FLEXT_DSP_SETUP(Impulse_ar);
+    FLEXT_SETUP(Impulse_kr);
+
+    FLEXT_DSP_SETUP(Integrator_ar);
+    FLEXT_SETUP(Integrator_kr);
+
+    FLEXT_DSP_SETUP(Decay_ar); 
 }
 
 FLEXT_LIB_SETUP(sc4pd,sc4pd_library_setup);
diff --git a/sc4pd/source/support.hpp b/sc4pd/source/support.hpp
index d05497e..bb5537a 100644
--- a/sc4pd/source/support.hpp
+++ b/sc4pd/source/support.hpp
@@ -93,3 +93,11 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 	V (thisType::*v_##NAME)(I n,S *const *invecs,S *const *outvecs)
 
 #define SIGFUN(FUN) &thisType::FUN
+
+
+/* this macro has to be redefined to work with flext */
+
+// calculate a slope for control rate interpolation to audio rate.
+//#define CALCSLOPE(next,prev) ((next - prev) * unit->mRate->mSlopeFactor)
+#undef CALCSLOPE
+#define CALCSLOPE(next,prev) ((next - prev) * 1/Blocksize())