spandsp 3.0.0
private/godard.h
1/*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * private/godard.h - Godard symbol timing error detector.
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2024 Steve Underwood
9 *
10 * All rights reserved.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Lesser General Public License version 2.1,
14 * as published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26#if !defined(_SPANDSP_PRIVATE_GODARD_H_)
27#define _SPANDSP_PRIVATE_GODARD_H_
28
30{
31 godard_ted_descriptor_t desc;
32#if defined(SPANDSP_USE_FIXED_POINTx)
33 /*! Low band edge filter for symbol sync. */
34 int32_t low_band_edge[2];
35 /*! High band edge filter for symbol sync. */
36 int32_t high_band_edge[2];
37 /*! DC filter for symbol sync. */
38 int32_t dc_filter[2];
39 /*! Baud phase for symbol sync. */
40 int32_t baud_phase;
41#else
42 /*! Low band edge filter for symbol sync. */
43 float low_band_edge[2];
44 /*! High band edge filter for symbol sync. */
46 /*! DC filter for symbol sync. */
47 float dc_filter[2];
48 /*! Baud phase for symbol sync. */
50#endif
51 /*! \brief The total symbol timing correction since the carrier came up.
52 This is only for performance analysis purposes. */
54};
55
56#endif
57/*- End of file ------------------------------------------------------------*/
Definition private/godard.h:30
float baud_phase
Definition private/godard.h:49
int total_baud_timing_correction
The total symbol timing correction since the carrier came up. This is only for performance analysis p...
Definition private/godard.h:53
float dc_filter[2]
Definition private/godard.h:47
float high_band_edge[2]
Definition private/godard.h:45
float low_band_edge[2]
Definition private/godard.h:43