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comparison spandsp-0.0.3/spandsp-0.0.3/tests/make_g168_css.c @ 5:f762bf195c4b

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import spandsp-0.0.3
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 16:00:21 +0200
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4:26cd8f1ef0b1 5:f762bf195c4b
1 /*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * makecss.c - Create the composite source signal (CSS) for G.168 testing.
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2003 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 General Public License version 2, as
14 * 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 General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * $Id: make_g168_css.c,v 1.9 2006/11/19 14:07:27 steveu Exp $
26 */
27
28 /*! \page makecss_page CSS construction for G.168 testing
29 \section makecss_page_sec_1 What does it do?
30 ???.
31
32 \section makecss_page_sec_2 How does it work?
33 ???.
34 */
35
36 #ifdef HAVE_CONFIG_H
37 #include "config.h"
38 #endif
39
40 #include <stdlib.h>
41 #include <unistd.h>
42 #include <inttypes.h>
43 #include <string.h>
44 #include <time.h>
45 #include <stdio.h>
46 #include <fcntl.h>
47 #include <audiofile.h>
48 #include <tiffio.h>
49 #if defined(HAVE_FFTW3_H)
50 #include <fftw3.h>
51 #else
52 #include <fftw.h>
53 #endif
54 #if defined(HAVE_TGMATH_H)
55 #include <tgmath.h>
56 #endif
57 #if defined(HAVE_MATH_H)
58 #define GEN_CONST
59 #include <math.h>
60 #endif
61
62 #include "spandsp.h"
63 #include "spandsp/g168models.h"
64
65 #if !defined(NULL)
66 #define NULL (void *) 0
67 #endif
68
69 #define FAST_SAMPLE_RATE 44100.0
70
71 static double scaling(double f, double start, double end, double start_gain, double end_gain)
72 {
73 double scale;
74
75 scale = start_gain + (f - start)*(end_gain - start_gain)/(end - start);
76 return scale;
77 }
78
79 int main(int argc, char *argv[])
80 {
81 #if defined(HAVE_FFTW3_H)
82 double in[8192][2];
83 double out[8192][2];
84 #else
85 fftw_complex in[8192];
86 fftw_complex out[8192];
87 #endif
88 fftw_plan p;
89 int16_t voiced_sound[8192];
90 int16_t noise_sound[8192];
91 int16_t silence_sound[8192];
92 int i;
93 int j;
94 int outframes;
95 int voiced_length;
96 float f;
97 double peak;
98 double ms;
99 double scale;
100 AFfilehandle filehandle;
101 AFfilesetup filesetup;
102 awgn_state_t noise_source;
103
104 filesetup = afNewFileSetup();
105 if (filesetup == AF_NULL_FILESETUP)
106 {
107 fprintf(stderr, " Failed to create file setup\n");
108 exit(2);
109 }
110 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
111 afInitRate(filesetup, AF_DEFAULT_TRACK, FAST_SAMPLE_RATE);
112 afInitFileFormat(filesetup, AF_FILE_WAVE);
113 afInitChannels(filesetup, AF_DEFAULT_TRACK, 1);
114 filehandle = afOpenFile("sound_c1.wav", "w", filesetup);
115 if (filehandle == AF_NULL_FILEHANDLE)
116 {
117 fprintf(stderr, " Failed to open result file\n");
118 exit(2);
119 }
120
121 for (i = 0; i < (int)(sizeof(css_c1)/sizeof(css_c1[0])); i++)
122 voiced_sound[i] = css_c1[i];
123 voiced_length = i;
124
125 ms = 0;
126 peak = 0;
127 for (i = 0; i < voiced_length; i++)
128 {
129 if (abs(voiced_sound[i]) > peak)
130 peak = abs(voiced_sound[i]);
131 ms += voiced_sound[i]*voiced_sound[i];
132 }
133 ms = 20.0*log10(sqrt(ms/voiced_length)/32767.0) + DBM0_MAX_POWER;
134 printf("Voiced level = %.2fdB\n", ms);
135
136 #if defined(HAVE_FFTW3_H)
137 p = fftw_plan_dft_1d(8192, in, out, FFTW_BACKWARD, FFTW_ESTIMATE);
138 #else
139 p = fftw_create_plan(8192, FFTW_BACKWARD, FFTW_ESTIMATE);
140 #endif
141 for (i = 0; i < 8192; i++)
142 {
143 #if defined(HAVE_FFTW3_H)
144 in[i][0] = 0.0;
145 in[i][1] = 0.0;
146 #else
147 in[i].re = 0.0;
148 in[i].im = 0.0;
149 #endif
150 }
151 for (i = 1; i <= 3715; i++)
152 {
153 f = FAST_SAMPLE_RATE*i/8192.0;
154
155 #if 1
156 if (f < 50.0)
157 scale = -60.0;
158 else if (f < 100.0)
159 scale = scaling(f, 50.0, 100.0, -25.8, -12.8);
160 else if (f < 200.0)
161 scale = scaling(f, 100.0, 200.0, -12.8, 17.4);
162 else if (f < 215.0)
163 scale = scaling(f, 200.0, 215.0, 17.4, 17.8);
164 else if (f < 500.0)
165 scale = scaling(f, 215.0, 500.0, 17.8, 12.2);
166 else if (f < 1000.0)
167 scale = scaling(f, 500.0, 1000.0, 12.2, 7.2);
168 else if (f < 2850.0)
169 scale = scaling(f, 1000.0, 2850.0, 7.2, 0.0);
170 else if (f < 3600.0)
171 scale = scaling(f, 2850.0, 3600.0, 0.0, -2.0);
172 else if (f < 3660.0)
173 scale = scaling(f, 3600.0, 3660.0, -2.0, -20.0);
174 else if (f < 3680.0)
175 scale = scaling(f, 3600.0, 3680.0, -20.0, -30.0);
176 else
177 scale = -60.0;
178 #else
179 scale = 0.0;
180 #endif
181 #if defined(HAVE_FFTW3_H)
182 in[i][0] = 0.0;
183 in[i][1] = (rand() & 0x1) ? 1.0 : -1.0;
184 in[i][1] *= pow(10.0, scale/20.0);
185 in[i][1] *= 35.0; //305360
186 //printf("%10d %15.5f %15.5f\n", i, in[i].re, in[i].im);
187 in[8192 - i][0] = 0.0;
188 in[8192 - i][1] = -in[i][1];
189 //printf("%10d %15.5f %15.5f\n", i, in[i][0], in[i][1]);
190 #else
191 in[i].re = 0.0;
192 in[i].im = (rand() & 0x1) ? 1.0 : -1.0;
193 in[i].im *= pow(10.0, scale/20.0);
194 in[i].im *= 35.0; //305360
195 in[8192 - i].re = 0.0;
196 in[8192 - i].im = -in[i].im;
197 //printf("%10d %15.5f %15.5f\n", i, in[i].re, in[i].im);
198 #endif
199 }
200 #if defined(HAVE_FFTW3_H)
201 fftw_execute(p);
202 #else
203 fftw_one(p, in, out);
204 #endif
205 for (i = 0; i < 8192; i++)
206 {
207 //printf("%10d %15.5f %15.5f\n", i, out[i].re, out[i].im);
208 #if defined(HAVE_FFTW3_H)
209 noise_sound[i] = out[i][0];
210 #else
211 noise_sound[i] = out[i].re;
212 #endif
213 }
214
215 peak = 0;
216 ms = 0;
217 for (i = 0; i < 8192; i++)
218 {
219 if (abs(noise_sound[i]) > peak)
220 peak = abs(noise_sound[i]);
221 ms += noise_sound[i]*noise_sound[i];
222 }
223 printf("Noise level = %.2fdB\n", 20.0*log10(sqrt(ms/8192.0)/32767.0) + DBM0_MAX_POWER);
224 printf("Crest factor = %.2fdB\n", 20.0*log10(peak/sqrt(ms/8192.0)));
225
226 for (i = 0; i < 8192; i++)
227 silence_sound[i] = 0.0;
228
229 for (j = 0; j < 16; j++)
230 {
231 outframes = afWriteFrames(filehandle,
232 AF_DEFAULT_TRACK,
233 voiced_sound,
234 voiced_length);
235 }
236 printf("%d samples of voice\n", 16*voiced_length);
237 outframes = afWriteFrames(filehandle,
238 AF_DEFAULT_TRACK,
239 noise_sound,
240 8192);
241 outframes = afWriteFrames(filehandle,
242 AF_DEFAULT_TRACK,
243 noise_sound,
244 8820 - 8192);
245 printf("%d samples of noise\n", 8820);
246 outframes = afWriteFrames(filehandle,
247 AF_DEFAULT_TRACK,
248 silence_sound,
249 4471);
250 printf("%d samples of silence\n", 4471);
251
252 for (j = 0; j < voiced_length; j++)
253 voiced_sound[j] = -voiced_sound[j];
254 for (j = 0; j < 8192; j++)
255 noise_sound[j] = -noise_sound[j];
256
257 for (j = 0; j < 16; j++)
258 {
259 outframes = afWriteFrames(filehandle,
260 AF_DEFAULT_TRACK,
261 voiced_sound,
262 voiced_length);
263 }
264 printf("%d samples of voice\n", 16*voiced_length);
265 outframes = afWriteFrames(filehandle,
266 AF_DEFAULT_TRACK,
267 noise_sound,
268 8192);
269 outframes = afWriteFrames(filehandle,
270 AF_DEFAULT_TRACK,
271 noise_sound,
272 8820 - 8192);
273 printf("%d samples of noise\n", 8820);
274 outframes = afWriteFrames(filehandle,
275 AF_DEFAULT_TRACK,
276 silence_sound,
277 4471);
278 printf("%d samples of silence\n", 4471);
279
280 if (afCloseFile(filehandle) != 0)
281 {
282 fprintf(stderr, " Cannot close speech file '%s'\n", "sound_c1.wav");
283 exit(2);
284 }
285
286 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
287 afInitRate(filesetup, AF_DEFAULT_TRACK, FAST_SAMPLE_RATE);
288 afInitFileFormat(filesetup, AF_FILE_WAVE);
289 afInitChannels(filesetup, AF_DEFAULT_TRACK, 1);
290 filehandle = afOpenFile("sound_c3.wav", "w", filesetup);
291 if (filehandle == AF_NULL_FILEHANDLE)
292 {
293 fprintf(stderr, " Failed to open result file\n");
294 exit(2);
295 }
296
297 for (i = 0; i < (int) (sizeof(css_c3)/sizeof(css_c3[0])); i++)
298 voiced_sound[i] = css_c3[i];
299 voiced_length = i;
300
301 ms = 0;
302 for (i = 0; i < voiced_length; i++)
303 {
304 if (abs(voiced_sound[i]) > peak)
305 peak = abs(voiced_sound[i]);
306 ms += voiced_sound[i]*voiced_sound[i];
307 }
308 ms = 20.0*log10(sqrt(ms/voiced_length)/32767.0) + DBM0_MAX_POWER;
309 printf("Voiced level = %.2fdB\n", ms);
310
311 awgn_init_dbm0(&noise_source, 7162534, ms);
312 for (i = 0; i < 8192; i++)
313 noise_sound[i] = awgn(&noise_source);
314 peak = 0;
315 ms = 0;
316 for (i = 0; i < 8192; i++)
317 {
318 if (abs(noise_sound[i]) > peak)
319 peak = abs(noise_sound[i]);
320 ms += noise_sound[i]*noise_sound[i];
321 }
322 printf("Noise level = %.2fdB\n", 20.0*log10(sqrt(ms/8192.0)/32767.0) + DBM0_MAX_POWER);
323 printf("Crest factor = %.2fdB\n", 20.0*log10(peak/sqrt(ms/8192.0)));
324
325 for (j = 0; j < 14; j++)
326 {
327 outframes = afWriteFrames(filehandle,
328 AF_DEFAULT_TRACK,
329 voiced_sound,
330 voiced_length);
331 }
332 printf("%d samples of voice\n", 14*i);
333 outframes = afWriteFrames(filehandle,
334 AF_DEFAULT_TRACK,
335 noise_sound,
336 8192);
337 outframes = afWriteFrames(filehandle,
338 AF_DEFAULT_TRACK,
339 noise_sound,
340 8820 - 8192);
341 printf("%d samples of noise\n", 8820);
342 outframes = afWriteFrames(filehandle,
343 AF_DEFAULT_TRACK,
344 silence_sound,
345 5614);
346 printf("%d samples of silence\n", 5614);
347
348 for (j = 0; j < voiced_length; j++)
349 voiced_sound[j] = -voiced_sound[j];
350 for (j = 0; j < 8192; j++)
351 noise_sound[j] = -noise_sound[j];
352
353 for (j = 0; j < 14; j++)
354 {
355 outframes = afWriteFrames(filehandle,
356 AF_DEFAULT_TRACK,
357 voiced_sound,
358 voiced_length);
359 }
360 printf("%d samples of voice\n", 14*i);
361 outframes = afWriteFrames(filehandle,
362 AF_DEFAULT_TRACK,
363 noise_sound,
364 8192);
365 outframes = afWriteFrames(filehandle,
366 AF_DEFAULT_TRACK,
367 noise_sound,
368 8820 - 8192);
369 printf("%d samples of noise\n", 8820);
370 outframes = afWriteFrames(filehandle,
371 AF_DEFAULT_TRACK,
372 silence_sound,
373 5614);
374 printf("%d samples of silence\n", 5614);
375
376 if (afCloseFile(filehandle) != 0)
377 {
378 fprintf(stderr, " Cannot close speech file '%s'\n", "sound_c3.wav");
379 exit(2);
380 }
381 afFreeFileSetup(filesetup);
382
383 fftw_destroy_plan(p);
384 return 0;
385 }
386 /*- End of function --------------------------------------------------------*/
387 /*- End of file ------------------------------------------------------------*/

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