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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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2
src/cnetz/dsp.h
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@@ -1,6 +1,6 @@
void dsp_init(void);
int dsp_init_sender(cnetz_t *cnetz, int measure_speed, double clock_speed[2]);
int dsp_init_sender(cnetz_t *cnetz, int measure_speed, double clock_speed[2], int use_sdr);
void dsp_cleanup_sender(cnetz_t *cnetz);
void calc_clock_speed(cnetz_t *cnetz, double samples, int tx, int result);
void unshrink_speech(cnetz_t *cnetz, sample_t *speech_buffer, int count);