diff options
Diffstat (limited to 'source/vowel~.c')
| -rw-r--r-- | source/vowel~.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/source/vowel~.c b/source/vowel~.c deleted file mode 100644 index 87b8e39..0000000 --- a/source/vowel~.c +++ /dev/null @@ -1,118 +0,0 @@ -/* sIgpAck
- * for
- * pure-data
- * www.weiss-archiv.de */
-
-#include "m_pd.h"
-#ifdef _MSC_VER
-#pragma warning( disable : 4244 )
-#pragma warning( disable : 4305 )
-#endif
-
-/* ------------------------ vowel~ ----------------------------- */
-/* simple formant filter */
-/* code from musicdsp.org posted by alex@smartelectronix.com */
-
-static t_class *vowel_tilde_class;
-
-typedef struct _vowel_tilde
-{
- t_object x_obj;
- t_sample x_vowelnum;
- float x_f;
-} t_vowel_tilde;
-
-static void *vowel_tilde_new(t_floatarg vowelnum)
-{
- t_vowel_tilde *x = (t_vowel_tilde *)pd_new(vowel_tilde_class);
- x->x_vowelnum = vowelnum;
- outlet_new(&x->x_obj, gensym("signal"));
- floatinlet_new(&x->x_obj, &x->x_vowelnum);
- x->x_f = 0;
- if(vowelnum) x->x_vowelnum = vowelnum;
- else x->x_vowelnum = 0;
- return (x);
-}
-
-const double coeff[5][11]= {
- { 8.11044e-06,
- 8.943665402, -36.83889529, 92.01697887, -154.337906, 181.6233289,
- -151.8651235, 89.09614114, -35.10298511, 8.388101016, -0.923313471 ///A
- },
- { 4.36215e-06,
- 8.90438318, -36.55179099, 91.05750846, -152.422234, 179.1170248, ///E
- -149.6496211,87.78352223, -34.60687431, 8.282228154, -0.914150747
- },
- { 3.33819e-06,
- 8.893102966, -36.49532826, 90.96543286, -152.4545478, 179.4835618,
- -150.315433, 88.43409371, -34.98612086, 8.407803364, -0.932568035 ///I
- },
- { 1.13572e-06,
- 8.994734087, -37.2084849, 93.22900521, -156.6929844, 184.596544, ///O
- -154.3755513, 90.49663749, -35.58964535, 8.478996281, -0.929252233
- },
- { 4.09431e-07,
- 8.997322763, -37.20218544, 93.11385476, -156.2530937, 183.7080141, ///U
- -153.2631681, 89.59539726, -35.12454591, 8.338655623, -0.910251753
- }
-};
-
-static double memory[10] = {0,0,0,0,0,0,0,0,0,0};
-
-float formant_filter (float in, int vowelnum)
-{
- float res;
- res= (float) (coeff[vowelnum][0]*in +
- coeff[vowelnum][1]*memory[0] +
- coeff[vowelnum][2]*memory[1] +
- coeff[vowelnum][3]*memory[2] +
- coeff[vowelnum][4]*memory[3] +
- coeff[vowelnum][5]*memory[4] +
- coeff[vowelnum][6]*memory[5] +
- coeff[vowelnum][7]*memory[6] +
- coeff[vowelnum][8]*memory[7] +
- coeff[vowelnum][9]*memory[8] +
- coeff[vowelnum][10]*memory[9]);
-
- memory[9]=memory[8];
- memory[8]=memory[7];
- memory[7]=memory[6];
- memory[6]=memory[5];
- memory[5]=memory[4];
- memory[4]=memory[3];
- memory[3]=memory[2];
- memory[2]=memory[1];
- memory[1]=memory[0];
- memory[0]=(double)res;
- return res;
-}
-
-static t_int *vowel_tilde_perform(t_int *w)
-{
- t_vowel_tilde *x = (t_vowel_tilde *)(w[1]);
- t_float *in = (t_float *)(w[2]);
- t_float *out = (t_float *)(w[3]);
- int n = (int)(w[4]);
- float f, value;
- while (n--)
- {
- f = *in++;
- value = formant_filter(f, (int)x->x_vowelnum);
- *out++ = value;
- }
- return (w+5);
-}
-
-static void vowel_tilde_dsp(t_vowel_tilde *x, t_signal **sp)
-{
- dsp_add(vowel_tilde_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
-}
-
-void vowel_tilde_setup(void)
-{
- vowel_tilde_class = class_new(gensym("vowel~"), (t_newmethod)vowel_tilde_new, 0,
- sizeof(t_vowel_tilde), 0, A_DEFFLOAT, 0);
- CLASS_MAINSIGNALIN(vowel_tilde_class, t_vowel_tilde, x_f);
- class_addmethod(vowel_tilde_class, (t_method)vowel_tilde_dsp, gensym("dsp"), 0);
- class_addmethod(vowel_tilde_class, (t_method)formant_filter, gensym("formant_filter"), A_GIMME, A_NULL);
-}
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