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Prepare for SDR: Add bandwidth and deviation info to sender instance

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This commit is contained in:
Andreas Eversberg
2017-01-06 12:22:51 +01:00
parent 9ff8c3bb25
commit c5cf88ce57
10 changed files with 35 additions and 9 deletions
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5
src/amps/dsp.c
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@@ -99,6 +99,7 @@
#define PI M_PI
#define BANDWIDTH 20000.0 /* maximum bandwidth */
#define FSK_DEVIATION 32767.0 /* +-8 KHz */
#define SAT_DEVIATION 8192.0 /* +-2 KHz */
#define COMPANDOR_0DB 45000 /* works quite well */
@@ -191,6 +192,10 @@ int dsp_init_sender(amps_t *amps, int high_pass, int tolerant)
PDEBUG_CHAN(DDSP, DEBUG_DEBUG, "Init DSP for transceiver.\n");
/* set deviation and modulation parameters */
amps->sender.bandwidth = BANDWIDTH;
amps->sender.sample_deviation = 8000.0 / (double)FSK_DEVIATION;
if (amps->sender.samplerate < 96000) {
PDEBUG(DDSP, DEBUG_ERROR, "Sample rate must be at least 96000 Hz to process FSK and SAT signals.\n");
return -EINVAL;