382 lines
13 KiB
C
382 lines
13 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* g168tests.c - Tests of the "test equipment" (filters, etc.) specified
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* in G.168. This code is only for checking out the tools,
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* not for testing an echo cancellor.
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2001 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: g168_tests.c,v 1.19 2008/11/30 10:17:31 steveu Exp $
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <audiofile.h>
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//#if defined(WITH_SPANDSP_INTERNALS)
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#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
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//#endif
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#include "spandsp.h"
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#include "spandsp/g168models.h"
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#define FALSE 0
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#define TRUE (!FALSE)
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typedef struct
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{
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const char *name;
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int max;
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int cur;
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float gain;
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AFfilehandle handle;
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int16_t signal[SAMPLE_RATE];
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} signal_source_t;
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signal_source_t local_css;
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signal_source_t far_css;
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static AFfilehandle afOpenFile_telephony_read(const char *name, int channels)
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{
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float x;
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AFfilehandle handle;
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if ((handle = afOpenFile(name, "r", 0)) == AF_NULL_FILEHANDLE)
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{
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fprintf(stderr, " Cannot open wave file '%s'\n", name);
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exit(2);
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}
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if ((x = afGetFrameSize(handle, AF_DEFAULT_TRACK, 1)) != 2.0)
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{
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fprintf(stderr, " Unexpected frame size in wave file '%s'\n", name);
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exit(2);
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}
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if ((x = afGetRate(handle, AF_DEFAULT_TRACK)) != (float) SAMPLE_RATE)
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{
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printf(" Unexpected sample rate in wave file '%s'\n", name);
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exit(2);
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}
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if ((x = afGetChannels(handle, AF_DEFAULT_TRACK)) != (float) channels)
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{
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printf(" Unexpected number of channels in wave file '%s'\n", name);
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exit(2);
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}
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return handle;
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}
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/*- End of function --------------------------------------------------------*/
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#if 0
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static AFfilehandle afOpenFile_telephony_write(const char *name, int channels)
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{
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AFfilesetup setup;
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AFfilehandle handle;
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if ((setup = afNewFileSetup()) == AF_NULL_FILESETUP)
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{
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fprintf(stderr, " %s: Failed to create file setup\n", name);
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exit(2);
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}
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afInitSampleFormat(setup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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afInitRate(setup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
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afInitFileFormat(setup, AF_FILE_WAVE);
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afInitChannels(setup, AF_DEFAULT_TRACK, channels);
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if ((handle = afOpenFile(name, "w", setup)) == AF_NULL_FILEHANDLE)
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{
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fprintf(stderr, " Failed to open result file\n");
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exit(2);
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}
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afFreeFileSetup(setup);
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return handle;
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}
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/*- End of function --------------------------------------------------------*/
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#endif
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static void signal_load(signal_source_t *sig, const char *name)
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{
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sig->handle = afOpenFile_telephony_read(name, 1);
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sig->name = name;
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sig->max = afReadFrames(sig->handle, AF_DEFAULT_TRACK, sig->signal, SAMPLE_RATE);
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if (sig->max < 0)
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{
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fprintf(stderr, " Error reading sound file '%s'\n", sig->name);
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exit(2);
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}
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}
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/*- End of function --------------------------------------------------------*/
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static void signal_free(signal_source_t *sig)
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{
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if (afCloseFile(sig->handle) != 0)
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{
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fprintf(stderr, " Cannot close sound file '%s'\n", sig->name);
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exit(2);
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}
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}
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/*- End of function --------------------------------------------------------*/
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static void signal_restart(signal_source_t *sig, float gain)
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{
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sig->cur = 0;
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sig->gain = powf(10.0f, gain/20.0f);
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}
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/*- End of function --------------------------------------------------------*/
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static int16_t signal_amp(signal_source_t *sig)
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{
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int16_t tx;
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tx = sig->signal[sig->cur++]*sig->gain;
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if (sig->cur >= sig->max)
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sig->cur = 0;
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return tx;
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}
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/*- End of function --------------------------------------------------------*/
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int main(int argc, char *argv[])
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{
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int f;
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int i;
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int16_t amp[8000];
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int16_t value;
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int signal;
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float power[10];
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tone_gen_descriptor_t tone_desc;
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tone_gen_state_t tone_state;
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awgn_state_t noise_source;
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fir32_state_t line_model_d2;
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fir32_state_t line_model_d3;
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fir32_state_t line_model_d4;
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fir32_state_t line_model_d5;
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fir32_state_t line_model_d6;
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fir32_state_t line_model_d7;
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fir32_state_t line_model_d8;
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fir32_state_t line_model_d9;
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fir_float_state_t level_measurement_bp;
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signal_load(&local_css, "sound_c1_8k.wav");
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signal_load(&far_css, "sound_c3_8k.wav");
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fir32_create(&line_model_d2,
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line_model_d2_coeffs,
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sizeof(line_model_d2_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d3,
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line_model_d3_coeffs,
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sizeof(line_model_d3_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d4,
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line_model_d4_coeffs,
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sizeof(line_model_d4_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d5,
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line_model_d5_coeffs,
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sizeof(line_model_d5_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d6,
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line_model_d6_coeffs,
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sizeof(line_model_d6_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d7,
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line_model_d7_coeffs,
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sizeof(line_model_d7_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d8,
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line_model_d8_coeffs,
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sizeof(line_model_d8_coeffs)/sizeof(int32_t));
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fir32_create(&line_model_d9,
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line_model_d9_coeffs,
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sizeof(line_model_d9_coeffs)/sizeof(int32_t));
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fir_float_create(&level_measurement_bp,
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level_measurement_bp_coeffs,
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sizeof(level_measurement_bp_coeffs)/sizeof(float));
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for (f = 10; f < 4000; f++)
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{
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make_tone_gen_descriptor(&tone_desc,
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f,
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-10,
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0,
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0,
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1,
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0,
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0,
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0,
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TRUE);
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tone_gen_init(&tone_state, &tone_desc);
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tone_gen(&tone_state, amp, 8000);
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for (i = 0; i < 10; i++)
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power[i] = 0.0f;
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for (i = 0; i < 800; i++)
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{
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signal = fir32(&line_model_d2, amp[i]);
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power[0] += ((signal*signal - power[0])/32.0f);
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signal = fir32(&line_model_d3, amp[i]);
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power[1] += ((signal*signal - power[1])/32.0f);
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signal = fir32(&line_model_d4, amp[i]);
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power[2] += ((signal*signal - power[2])/32.0f);
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signal = fir32(&line_model_d5, amp[i]);
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power[3] += ((signal*signal - power[3])/32.0f);
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signal = fir32(&line_model_d6, amp[i]);
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power[4] += ((signal*signal - power[4])/32.0f);
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signal = fir32(&line_model_d7, amp[i]);
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power[5] += ((signal*signal - power[5])/32.0f);
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signal = fir32(&line_model_d8, amp[i]);
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power[6] += ((signal*signal - power[6])/32.0f);
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signal = fir32(&line_model_d9, amp[i]);
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power[7] += ((signal*signal - power[7])/32.0f);
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signal = fir_float(&level_measurement_bp, amp[i]);
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power[8] += ((signal*signal - power[8])/32.0f);
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signal = amp[i];
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power[9] += ((signal*signal - power[9])/32.0f);
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}
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printf("%d %f %f %f %f %f %f %f %f %f %f\n",
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f,
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sqrt(power[0])*LINE_MODEL_D2_GAIN,
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sqrt(power[1])*LINE_MODEL_D3_GAIN,
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sqrt(power[2])*LINE_MODEL_D4_GAIN,
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sqrt(power[3])*LINE_MODEL_D5_GAIN,
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sqrt(power[4])*LINE_MODEL_D6_GAIN,
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sqrt(power[5])*LINE_MODEL_D7_GAIN,
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sqrt(power[6])*LINE_MODEL_D8_GAIN,
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sqrt(power[7])*LINE_MODEL_D9_GAIN,
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sqrt(power[8]),
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sqrt(power[9]));
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}
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awgn_init_dbm0(&noise_source, 1234567, -20.0f);
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for (i = 0; i < 10; i++)
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power[i] = 0.0f;
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signal_restart(&local_css, 0.0f);
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signal_restart(&far_css, 0.0f);
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for (i = 0; i < SAMPLE_RATE; i++)
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{
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value = signal_amp(&local_css);
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//value = awgn(&noise_source);
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signal = fir32(&line_model_d2, value);
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power[0] += ((signal*signal - power[0])/32.0f);
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signal = fir32(&line_model_d3, value);
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power[1] += ((signal*signal - power[1])/32.0f);
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signal = fir32(&line_model_d4, value);
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power[2] += ((signal*signal - power[2])/32.0f);
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signal = fir32(&line_model_d5, value);
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power[3] += ((signal*signal - power[3])/32.0f);
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signal = fir32(&line_model_d6, value);
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power[4] += ((signal*signal - power[4])/32.0f);
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signal = fir32(&line_model_d7, value);
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power[5] += ((signal*signal - power[5])/32.0f);
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signal = fir32(&line_model_d8, value);
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power[6] += ((signal*signal - power[6])/32.0f);
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signal = fir32(&line_model_d9, value);
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power[7] += ((signal*signal - power[7])/32.0f);
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signal = fir_float(&level_measurement_bp, value);
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power[8] += ((signal*signal - power[8])/32.0f);
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signal = value;
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power[9] += ((signal*signal - power[9])/32.0f);
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}
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for (i = 0; i < 10; i++)
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power[i] = 0.0f;
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for (i = 0; i < SAMPLE_RATE; i++)
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{
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value = signal_amp(&local_css);
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//value = awgn(&noise_source);
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signal = fir32(&line_model_d2, value);
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power[0] += ((signal*signal - power[0])/32.0f);
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signal = fir32(&line_model_d3, value);
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power[1] += ((signal*signal - power[1])/32.0f);
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signal = fir32(&line_model_d4, value);
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power[2] += ((signal*signal - power[2])/32.0f);
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signal = fir32(&line_model_d5, value);
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power[3] += ((signal*signal - power[3])/32.0f);
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signal = fir32(&line_model_d6, value);
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power[4] += ((signal*signal - power[4])/32.0f);
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signal = fir32(&line_model_d7, value);
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power[5] += ((signal*signal - power[5])/32.0f);
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signal = fir32(&line_model_d8, value);
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power[6] += ((signal*signal - power[6])/32.0f);
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signal = fir32(&line_model_d9, value);
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power[7] += ((signal*signal - power[7])/32.0f);
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signal = fir_float(&level_measurement_bp, value);
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power[8] += ((signal*signal - power[8])/32.0f);
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signal = value;
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power[9] += ((signal*signal - power[9])/32.0f);
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}
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printf("%d %f %f %f %f %f %f %f %f %f %f\n",
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0,
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sqrt(power[0])*LINE_MODEL_D2_GAIN,
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sqrt(power[1])*LINE_MODEL_D3_GAIN,
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sqrt(power[2])*LINE_MODEL_D4_GAIN,
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sqrt(power[3])*LINE_MODEL_D5_GAIN,
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sqrt(power[4])*LINE_MODEL_D6_GAIN,
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sqrt(power[5])*LINE_MODEL_D7_GAIN,
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sqrt(power[6])*LINE_MODEL_D8_GAIN,
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sqrt(power[7])*LINE_MODEL_D9_GAIN,
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sqrt(power[8]),
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sqrt(power[9]));
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printf("%d %f %f %f %f %f %f %f %f %f %f\n",
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0,
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sqrt(power[0]),
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sqrt(power[1]),
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sqrt(power[2]),
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sqrt(power[3]),
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sqrt(power[4]),
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sqrt(power[5]),
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sqrt(power[6]),
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sqrt(power[7]),
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sqrt(power[8]),
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sqrt(power[9]));
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printf("%d %f %f %f %f %f %f %f %f %f %f\n",
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0,
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sqrt(power[0])/sqrt(power[9]),
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sqrt(power[1])/sqrt(power[9]),
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sqrt(power[2])/sqrt(power[9]),
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sqrt(power[3])/sqrt(power[9]),
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sqrt(power[4])/sqrt(power[9]),
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sqrt(power[5])/sqrt(power[9]),
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sqrt(power[6])/sqrt(power[9]),
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sqrt(power[7])/sqrt(power[9]),
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sqrt(power[8]),
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sqrt(power[9]));
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printf("%d %f %f %f %f %f %f %f %f %f %f\n",
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0,
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sqrt(power[0])*LINE_MODEL_D2_GAIN/sqrt(power[9]),
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sqrt(power[1])*LINE_MODEL_D3_GAIN/sqrt(power[9]),
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sqrt(power[2])*LINE_MODEL_D4_GAIN/sqrt(power[9]),
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sqrt(power[3])*LINE_MODEL_D5_GAIN/sqrt(power[9]),
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sqrt(power[4])*LINE_MODEL_D6_GAIN/sqrt(power[9]),
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sqrt(power[5])*LINE_MODEL_D7_GAIN/sqrt(power[9]),
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sqrt(power[6])*LINE_MODEL_D8_GAIN/sqrt(power[9]),
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sqrt(power[7])*LINE_MODEL_D9_GAIN/sqrt(power[9]),
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sqrt(power[8]),
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sqrt(power[9]));
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for (i = 0; i < (int) (sizeof(css_c1)/sizeof(css_c1[0])); i++)
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printf("%d\n", css_c1[i]);
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printf("\n");
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for (i = 0; i < (int) (sizeof(css_c1)/sizeof(css_c3[0])); i++)
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printf("%d\n", css_c3[i]);
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signal_free(&local_css);
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signal_free(&far_css);
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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/*- End of file ------------------------------------------------------------*/
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