1 files changed, 174 insertions, 0 deletions
diff --git a/apps/plugins/pdbox/PDa/extra/highpass.c b/apps/plugins/pdbox/PDa/extra/highpass.c
new file mode 100644
index 0000000000..88ba4564e6
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/extra/highpass.c
@@ -0,0 +1,174 @@
+/* (C) Guenter Geiger <geiger@epy.co.at> */
+/*
+ These filter coefficients computations are taken from
+ http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt  
+ written by Robert Bristow-Johnson
+*/
+#include "m_pd.h"
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+#include <math.h>
+#include "filters.h"
+/* ------------------- highpass ----------------------------*/
+static t_class *highpass_class;
+void highpass_bang(t_rbjfilter *x)
+{
+     t_atom at[5];
+     t_float omega = e_omega(x->x_freq,x->x_rate);
+     t_float alpha = e_alpha(x->x_bw* 0.01,omega);
+     t_float b1 = -(1 + cos(omega));
+     t_float b0 = -b1/2.;
+     t_float b2 = b0;
+     t_float a0 = 1 + alpha;
+     t_float a1 = -2.*cos(omega);
+     t_float a2 = 1 - alpha;
+/*     post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw); */
+     
+     if (!check_stability(-a1/a0,-a2/a0,b0/a0,b1/a0,b2/a0)) {
+       post("highpass: filter unstable -> resetting");
+       a0=1.;a1=0.;a2=0.;
+       b0=1.;b1=0.;b2=0.;
+     }
+     SETFLOAT(at,-a1/a0);
+     SETFLOAT(at+1,-a2/a0);
+     SETFLOAT(at+2,b0/a0);
+     SETFLOAT(at+3,b1/a0);
+     SETFLOAT(at+4,b2/a0);
+     
+     outlet_list(x->x_obj.ob_outlet,&s_list,5,at);
+}
+void highpass_float(t_rbjfilter *x,t_floatarg f)
+{
+     x->x_freq = f;
+     highpass_bang(x);
+}
+static void *highpass_new(t_floatarg f,t_floatarg bw)
+{
+    t_rbjfilter *x = (t_rbjfilter *)pd_new(highpass_class);
+    x->x_rate = 44100.0;
+    outlet_new(&x->x_obj,&s_float);
+/*    floatinlet_new(&x->x_obj, &x->x_gain);    */
+    floatinlet_new(&x->x_obj, &x->x_bw);
+    if (f > 0.) x->x_freq = f;
+    if (bw > 0.) x->x_bw = bw;
+    return (x);
+}
+void highpass_setup(void)
+{
+    highpass_class = class_new(gensym("highpass"), (t_newmethod)highpass_new, 0,
+                                sizeof(t_rbjfilter), 0,A_DEFFLOAT,A_DEFFLOAT,0);
+    class_addbang(highpass_class,highpass_bang);
+    class_addfloat(highpass_class,highpass_float);
+}
+/* (C) Guenter Geiger <geiger@epy.co.at> */
+/*
+ These filter coefficients computations are taken from
+ http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt  
+ written by Robert Bristow-Johnson
+*/
+#include "m_pd.h"
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+#include <math.h>
+#include "filters.h"
+/* ------------------- highpass ----------------------------*/
+static t_class *highpass_class;
+void highpass_bang(t_rbjfilter *x)
+{
+     t_atom at[5];
+     t_float omega = e_omega(x->x_freq,x->x_rate);
+     t_float alpha = e_alpha(x->x_bw* 0.01,omega);
+     t_float b1 = -(1 + cos(omega));
+     t_float b0 = -b1/2.;
+     t_float b2 = b0;
+     t_float a0 = 1 + alpha;
+     t_float a1 = -2.*cos(omega);
+     t_float a2 = 1 - alpha;
+/*     post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw); */
+     
+     if (!check_stability(-a1/a0,-a2/a0,b0/a0,b1/a0,b2/a0)) {
+       post("highpass: filter unstable -> resetting");
+       a0=1.;a1=0.;a2=0.;
+       b0=1.;b1=0.;b2=0.;
+     }
+     SETFLOAT(at,-a1/a0);
+     SETFLOAT(at+1,-a2/a0);
+     SETFLOAT(at+2,b0/a0);
+     SETFLOAT(at+3,b1/a0);
+     SETFLOAT(at+4,b2/a0);
+     
+     outlet_list(x->x_obj.ob_outlet,&s_list,5,at);
+}
+void highpass_float(t_rbjfilter *x,t_floatarg f)
+{
+     x->x_freq = f;
+     highpass_bang(x);
+}
+static void *highpass_new(t_floatarg f,t_floatarg bw)
+{
+    t_rbjfilter *x = (t_rbjfilter *)pd_new(highpass_class);
+    x->x_rate = 44100.0;
+    outlet_new(&x->x_obj,&s_float);
+/*    floatinlet_new(&x->x_obj, &x->x_gain);    */
+    floatinlet_new(&x->x_obj, &x->x_bw);
+    if (f > 0.) x->x_freq = f;
+    if (bw > 0.) x->x_bw = bw;
+    return (x);
+}
+void highpass_setup(void)
+{
+    highpass_class = class_new(gensym("highpass"), (t_newmethod)highpass_new, 0,
+                                sizeof(t_rbjfilter), 0,A_DEFFLOAT,A_DEFFLOAT,0);
+    class_addbang(highpass_class,highpass_bang);
+    class_addfloat(highpass_class,highpass_float);
+}

diff --git a/apps/plugins/pdbox/PDa/extra/highpass.c b/apps/plugins/pdbox/PDa/extra/highpass.c new file mode 100644 index 0000000000..88ba4564e6 --- /dev/null +++ b/apps/plugins/pdbox/PDa/extra/highpass.c
@@ -0,0 +1,174 @@
	1	/* (C) Guenter Geiger <geiger@epy.co.at> */
	2
	3
	4	/*
	5
	6	These filter coefficients computations are taken from
	7	http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt
	8
	9	written by Robert Bristow-Johnson
	10
	11	*/
	12
	13	#include "m_pd.h"
	14	#ifdef NT
	15	#pragma warning( disable : 4244 )
	16	#pragma warning( disable : 4305 )
	17	#endif
	18	#include <math.h>
	19	#include "filters.h"
	20
	21
	22	/* ------------------- highpass ----------------------------*/
	23
	24	static t_class *highpass_class;
	25
	26	void highpass_bang(t_rbjfilter *x)
	27	{
	28	t_atom at[5];
	29	t_float omega = e_omega(x->x_freq,x->x_rate);
	30	t_float alpha = e_alpha(x->x_bw* 0.01,omega);
	31	t_float b1 = -(1 + cos(omega));
	32	t_float b0 = -b1/2.;
	33	t_float b2 = b0;
	34	t_float a0 = 1 + alpha;
	35	t_float a1 = -2.*cos(omega);
	36	t_float a2 = 1 - alpha;
	37
	38	/* post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw); */
	39
	40	if (!check_stability(-a1/a0,-a2/a0,b0/a0,b1/a0,b2/a0)) {
	41	post("highpass: filter unstable -> resetting");
	42	a0=1.;a1=0.;a2=0.;
	43	b0=1.;b1=0.;b2=0.;
	44	}
	45
	46	SETFLOAT(at,-a1/a0);
	47	SETFLOAT(at+1,-a2/a0);
	48	SETFLOAT(at+2,b0/a0);
	49	SETFLOAT(at+3,b1/a0);
	50	SETFLOAT(at+4,b2/a0);
	51
	52	outlet_list(x->x_obj.ob_outlet,&s_list,5,at);
	53	}
	54
	55
	56	void highpass_float(t_rbjfilter *x,t_floatarg f)
	57	{
	58	x->x_freq = f;
	59	highpass_bang(x);
	60	}
	61
	62
	63	static void *highpass_new(t_floatarg f,t_floatarg bw)
	64	{
	65	t_rbjfilter x = (t_rbjfilter )pd_new(highpass_class);
	66
	67	x->x_rate = 44100.0;
	68	outlet_new(&x->x_obj,&s_float);
	69	/* floatinlet_new(&x->x_obj, &x->x_gain); */
	70	floatinlet_new(&x->x_obj, &x->x_bw);
	71	if (f > 0.) x->x_freq = f;
	72	if (bw > 0.) x->x_bw = bw;
	73	return (x);
	74	}
	75
	76
	77	void highpass_setup(void)
	78	{
	79	highpass_class = class_new(gensym("highpass"), (t_newmethod)highpass_new, 0,
	80	sizeof(t_rbjfilter), 0,A_DEFFLOAT,A_DEFFLOAT,0);
	81	class_addbang(highpass_class,highpass_bang);
	82	class_addfloat(highpass_class,highpass_float);
	83	}
	84
	85
	86
	87
	88	/* (C) Guenter Geiger <geiger@epy.co.at> */
	89
	90
	91	/*
	92
	93	These filter coefficients computations are taken from
	94	http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt
	95
	96	written by Robert Bristow-Johnson
	97
	98	*/
	99
	100	#include "m_pd.h"
	101	#ifdef NT
	102	#pragma warning( disable : 4244 )
	103	#pragma warning( disable : 4305 )
	104	#endif
	105	#include <math.h>
	106	#include "filters.h"
	107
	108
	109	/* ------------------- highpass ----------------------------*/
	110
	111	static t_class *highpass_class;
	112
	113	void highpass_bang(t_rbjfilter *x)
	114	{
	115	t_atom at[5];
	116	t_float omega = e_omega(x->x_freq,x->x_rate);
	117	t_float alpha = e_alpha(x->x_bw* 0.01,omega);
	118	t_float b1 = -(1 + cos(omega));
	119	t_float b0 = -b1/2.;
	120	t_float b2 = b0;
	121	t_float a0 = 1 + alpha;
	122	t_float a1 = -2.*cos(omega);
	123	t_float a2 = 1 - alpha;
	124
	125	/* post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw); */
	126
	127	if (!check_stability(-a1/a0,-a2/a0,b0/a0,b1/a0,b2/a0)) {
	128	post("highpass: filter unstable -> resetting");
	129	a0=1.;a1=0.;a2=0.;
	130	b0=1.;b1=0.;b2=0.;
	131	}
	132
	133	SETFLOAT(at,-a1/a0);
	134	SETFLOAT(at+1,-a2/a0);
	135	SETFLOAT(at+2,b0/a0);
	136	SETFLOAT(at+3,b1/a0);
	137	SETFLOAT(at+4,b2/a0);
	138
	139	outlet_list(x->x_obj.ob_outlet,&s_list,5,at);
	140	}
	141
	142
	143	void highpass_float(t_rbjfilter *x,t_floatarg f)
	144	{
	145	x->x_freq = f;
	146	highpass_bang(x);
	147	}
	148
	149
	150	static void *highpass_new(t_floatarg f,t_floatarg bw)
	151	{
	152	t_rbjfilter x = (t_rbjfilter )pd_new(highpass_class);
	153
	154	x->x_rate = 44100.0;
	155	outlet_new(&x->x_obj,&s_float);
	156	/* floatinlet_new(&x->x_obj, &x->x_gain); */
	157	floatinlet_new(&x->x_obj, &x->x_bw);
	158	if (f > 0.) x->x_freq = f;
	159	if (bw > 0.) x->x_bw = bw;
	160	return (x);
	161	}
	162
	163
	164	void highpass_setup(void)
	165	{
	166	highpass_class = class_new(gensym("highpass"), (t_newmethod)highpass_new, 0,
	167	sizeof(t_rbjfilter), 0,A_DEFFLOAT,A_DEFFLOAT,0);
	168	class_addbang(highpass_class,highpass_bang);
	169	class_addfloat(highpass_class,highpass_float);
	170	}
	171
	172
	173
	174