GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
Loading...
Searching...
No Matches
hilbert_fc.h
Go to the documentation of this file.
1/* -*- c++ -*- */
2/*
3 * Copyright 2004,2012 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef INCLUDED_FILTER_HILBERT_FC_H
24#define INCLUDED_FILTER_HILBERT_FC_H
25
26#include <gnuradio/filter/api.h>
28#include <gnuradio/sync_block.h>
29#include <gnuradio/types.h>
30
31namespace gr {
32namespace filter {
33
34/*!
35 * \brief Hilbert transformer.
36 * \ingroup filter_blk
37 *
38 * \details
39 * real output is input appropriately delayed.
40 * imaginary output is hilbert filtered (90 degree phase shift)
41 * version of input.
42 */
43class FILTER_API hilbert_fc : virtual public sync_block
44{
45public:
46 // gr::filter::hilbert_fc::sptr
47 typedef boost::shared_ptr<hilbert_fc> sptr;
48
49 /*!
50 * Build a Hilbert transformer filter block.
51 *
52 * \param ntaps The number of taps for the filter.
53 * \param window Window type (see firdes::win_type) to use.
54 * \param beta Beta value for a Kaiser window.
55 */
56 static sptr make(unsigned int ntaps,
57 firdes::win_type window = firdes::WIN_HAMMING,
58 double beta = 6.76);
59};
60
61} /* namespace filter */
62} /* namespace gr */
63
64#endif /* INCLUDED_FILTER_HILBERT_FC_H */
win_type
Definition firdes.h:45
Hilbert transformer.
Definition hilbert_fc.h:44
static sptr make(unsigned int ntaps, firdes::win_type window=firdes::WIN_HAMMING, double beta=6.76)
boost::shared_ptr< hilbert_fc > sptr
Definition hilbert_fc.h:47
synchronous 1:1 input to output with history
Definition sync_block.h:38
#define FILTER_API
Definition gr-filter/include/gnuradio/filter/api.h:30
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46