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C-Netz: SDR now uses zero-crossing to detect level changes.

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This does not work with analog radio, but with SDR it works.
The quality should be better and the process is faster.
This commit is contained in:
Andreas Eversberg
2017-05-17 12:21:19 +02:00
parent 07e45103ef
commit ef7ff26793
7 changed files with 168 additions and 59 deletions
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4
src/cnetz/cnetz.c
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@@ -140,7 +140,7 @@
#include "telegramm.h"
#include "dsp.h"
/* uncomment this to do echo debugging (-L) on Speech Channel */
/* uncomment this to do echo debugging (-l) on Speech Channel */
//#define DEBUG_SPK
#define CUT_OFF_EMPHASIS_CNETZ 796.0 /* 200 uS time constant */
@@ -290,7 +290,7 @@ int cnetz_create(int kanal, enum cnetz_chan_type chan_type, const char *audiodev
#endif
/* init audio processing */
rc = dsp_init_sender(cnetz, measure_speed, clock_speed);
rc = dsp_init_sender(cnetz, measure_speed, clock_speed, use_sdr);
if (rc < 0) {
PDEBUG(DCNETZ, DEBUG_ERROR, "Failed to init signal processing!\n");
goto error;