SDRAngel  4.11.5
Developer docs for <a href="https://github.com/f4exb/sdrangel">SDRangel<\a>, an Open Source Qt5 / OpenGL 3.0+ SDR and signal analyzer frontend to various hardware.
recursivefilters.h
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1 // Copyright (C) 2017 Edouard Griffiths, F4EXB //
3 // //
4 // This program is free software; you can redistribute it and/or modify //
5 // it under the terms of the GNU General Public License as published by //
6 // the Free Software Foundation as version 3 of the License, or //
7 // (at your option) any later version. //
8 // //
9 // This program is distributed in the hope that it will be useful, //
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of //
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
12 // GNU General Public License V3 for more details. //
13 // //
14 // You should have received a copy of the GNU General Public License //
15 // along with this program. If not, see <http://www.gnu.org/licenses/>. //
17 
18 #ifndef SDRBASE_DSP_RECURSIVEFILTERS_H_
19 #define SDRBASE_DSP_RECURSIVEFILTERS_H_
20 
21 #include "export.h"
22 
28 {
29 public:
30  SecondOrderRecursiveFilter(float samplingFrequency, float centerFrequency, float r);
32 
33  void setFrequencies(float samplingFrequency, float centerFrequency);
34  void setR(float r);
35  short run(short sample);
36  float run(float sample);
37 
38 private:
39  void init();
40 
41  float m_r;
43  float m_f;
44  float m_v[3];
45 };
46 
47 
48 
49 #endif /* SDRBASE_DSP_RECURSIVEFILTERS_H_ */
#define SDRBASE_API
Definition: export.h:40