blob: 1e12646e4ec8abc9cae0dbdd781055248e6f492b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* -*- c++ -*- */
/*
* Copyright 2005,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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 3, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_H
#define INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_H
#include <analog/api.h>
#include <gr_sync_block.h>
namespace gr {
namespace analog {
/*!
* \brief simple squelch block based on average signal power and threshold in dB.
* \ingroup level_blk
*/
class ANALOG_API simple_squelch_cc : virtual public gr_sync_block
{
public:
// gr::analog::simple_squelch_cc::sptr
typedef boost::shared_ptr<simple_squelch_cc> sptr;
/*!
* \brief Make a simple squelch block.
*
* \param threshold_db Threshold for muting.
* \param alpha Gain parameter for the running average filter.
*/
static sptr make(double threshold_db, double alpha);
virtual bool unmuted() const = 0;
virtual void set_alpha(double alpha) = 0;
virtual void set_threshold(double decibels) = 0;
virtual double threshold() const = 0;
virtual std::vector<float> squelch_range() const = 0;
};
} /* namespace analog */
} /* namespace gr */
#endif /* INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_H */
|
