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Diffstat (limited to 'filterbank~.h')
| -rw-r--r-- | filterbank~.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/filterbank~.h b/filterbank~.h new file mode 100644 index 0000000..34821c8 --- /dev/null +++ b/filterbank~.h @@ -0,0 +1,85 @@ +/* Copyright (c) 2002 Yves Degoyon. */ +/* For information on usage and redistribution, and for a DISCLAIMER OF ALL */ +/* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */ +/* */ +/* a header for filterbank~ which outputs frequency response */ +/* for a range of filters */ +/* */ +/* The filter code is taken from Speech Filing System */ +/* from Mark Huckvale, University College London */ +/* */ +/* 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. */ +/* */ +/* See file LICENSE for further informations on licensing terms. */ +/* */ +/* 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. */ +/* */ +/* Made while listening to : */ +/* */ +/* Twine -- Instrumentals */ +/* Andy T -- Poetry */ +/* ---------------------------------------------------------------------------- */ + +#ifndef __FILTERBANK_H +#define __FILTERBANK_H + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <math.h> +#include <ctype.h> +#include "m_pd.h" +#include "m_imp.h" +#include "g_canvas.h" + + +/* this code is borrowed from pd's object : bp~ */ + +typedef struct bpctl +{ + float c_x1; + float c_x2; + float c_coef1; + float c_coef2; + float c_gain; +} t_bpctl; + +typedef struct _filterbank_tilde +{ + t_object x_obj; + t_glist *x_glist; + t_int x_samplerate; /* system sample rate */ + t_int x_lowfreq; /* lower frequency of all filters */ + t_int x_highfreq; /* higher frequency of all filters */ + t_int x_nbfilters; /* number of filters */ + t_outlet **x_outputs; /* outputs for frequency responses */ + t_int x_nselected; /* index of item selected */ + t_int x_width; /* graphical x size ( not setable ) */ + t_int x_height; /* graphical y size ( not setable ) */ + t_int x_selected; /* selection flag */ + t_int x_allocate; /* allocation flag */ + t_int *x_outmapping; /* output mapping array */ + + // bp~ section : borrowed from pd's d_filter.c + float x_sr; + float *x_freq; + float *x_q; + t_bpctl *x_cspace; + t_bpctl **x_ctl; + + t_float x_f; /* classical float for signal input */ +} t_filterbank_tilde; + +#endif |