qm-dsp 1.8
SincWindow.h
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1/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
2
3/*
4 QM DSP library
5 Centre for Digital Music, Queen Mary, University of London.
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version. See the file
11 COPYING included with this distribution for more information.
12*/
13
14#ifndef SINC_WINDOW_H
15#define SINC_WINDOW_H
16
17#include <vector>
18
24{
25public:
33 SincWindow(int length, double p) : m_length(length), m_p(p) { init(); }
34
35 int getLength() const {
36 return m_length;
37 }
38
39 const double *getWindow() const {
40 return m_window.data();
41 }
42
43 void cut(double *src) const {
44 cut(src, src);
45 }
46
47 void cut(const double *src, double *dst) const {
48 for (int i = 0; i < m_length; ++i) {
49 dst[i] = src[i] * m_window[i];
50 }
51 }
52
53private:
55 double m_p;
56 std::vector<double> m_window;
57
58 void init();
59};
60
61#endif
A window containing values of the sinc function, i.e.
Definition SincWindow.h:24
int getLength() const
Definition SincWindow.h:35
void cut(const double *src, double *dst) const
Definition SincWindow.h:47
void init()
void cut(double *src) const
Definition SincWindow.h:43
const double * getWindow() const
Definition SincWindow.h:39
double m_p
Definition SincWindow.h:55
SincWindow(int length, double p)
Construct a windower of the given length, containing the values of sinc(x) with x=0 in the middle,...
Definition SincWindow.h:33
std::vector< double > m_window
Definition SincWindow.h:56