+++ /dev/null
-/* -*- c++ -*- */
-/*
- * Copyright 2004,2005 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_GR_SINGLE_ZERO_REC_FILTER_FF_H
-#define INCLUDED_GR_SINGLE_ZERO_REC_FILTER_FF_H
-
-#include <gr_sync_block.h>
-#include <gr_single_zero_avg.h>
-#include <stdexcept>
-
-class gr_single_zero_avg_filter_ff;
-typedef boost::shared_ptr<gr_single_zero_avg_filter_ff> gr_single_zero_avg_filter_ff_sptr;
-
-gr_single_zero_avg_filter_ff_sptr
-gr_make_single_zero_avg_filter_ff (double alpha, unsigned int vlen=1);
-
-/*!
- * \brief single zero moving average filter with float input, float output
- * \ingroup filter
- *
- * The input and output satisfy a difference equation of the form
-
- \f[
- y[n] - (1-alpha) y[n-1] = alpha x[n]
- \f]
-
- * with the corresponding rational system function
-
- \f[
- H(z) = \frac{alpha}{1 - (1-alpha) z^{-1}}
- \f]
-
- * Note that some texts define the system function with a + in the denominator.
- * If you're using that convention, you'll need to negate the feedback tap.
- */
-class gr_single_zero_avg_filter_ff : public gr_sync_block
-{
- private:
- friend gr_single_zero_avg_filter_ff_sptr
- gr_make_single_zero_avg_filter_ff (double alpha, unsigned int vlen);
-
- unsigned int d_vlen;
- std::vector<gr_single_zero_avg<float,float,double> > d_rec;
-
- gr_single_zero_avg_filter_ff (double alpha, unsigned int vlen);
-
- public:
- ~gr_single_zero_avg_filter_ff ();
-
- void set_taps (double alpha);
-
- int work (int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
-
-#endif