2 * Copyright 2006,2007 Free Software Foundation, Inc.
4 * This file is part of GNU Radio
6 * GNU Radio is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3, or (at your option)
11 * GNU Radio is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Radio; see the file COPYING. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street,
19 * Boston, MA 02110-1301, USA.
22 #ifndef INCLUDED_PAGER_SLICER_FB_H
23 #define INCLUDED_PAGER_SLICER_FB_H
25 #include <gr_sync_block.h>
27 class pager_slicer_fb;
28 typedef boost::shared_ptr<pager_slicer_fb> pager_slicer_fb_sptr;
30 pager_slicer_fb_sptr pager_make_slicer_fb(float alpha);
33 * \brief slicer description
36 class pager_slicer_fb : public gr_sync_block
39 friend pager_slicer_fb_sptr pager_make_slicer_fb(float alpha);
40 pager_slicer_fb(float alpha);
42 unsigned char slice(float sample);
44 float d_alpha; // DC removal time constant
45 float d_beta; // 1.0-d_alpha
46 float d_avg; // Average value for DC offset subtraction
49 int work (int noutput_items,
50 gr_vector_const_void_star &input_items,
51 gr_vector_void_star &output_items);
53 float dc_offset() const { return d_avg; }
56 #endif /* INCLUDED_PAGER_SLICER_FB_H */