radio95/fm95
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test of ssb

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This commit is contained in:
KubaPro010
2026-02-15 12:49:09 +01:00
parent 64e3f36e34
commit bffde6cb68
3 changed files with 70 additions and 0 deletions
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11
src/fm95.c
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@@ -83,6 +83,9 @@ typedef struct
float* rds_in;
Oscillator osc;
iirfilt_rrrf lpf_l, lpf_r;
#ifdef STEREO_SSB
firhilbf stereo_hilbert;
#endif
ResistorCapacitor preemp_l, preemp_r;
BS412Compressor bs412;
StereoEncoder stencode;
@@ -140,6 +143,10 @@ void cleanup_runtime(FM95_Runtime* runtime, const FM95_Config config) {
iirfilt_rrrf_destroy(runtime->lpf_l);
iirfilt_rrrf_destroy(runtime->lpf_r);
}
#ifdef STEREO_SSB
firhilbf_destroy(runtime->stereo_hilbert);
free(runtime->stencode.delay.buffer);
#endif
}
void cleanup_audio_runtime(FM95_Runtime *rt, const FM95_Options options) {
@@ -481,6 +488,10 @@ void init_runtime(FM95_Runtime* runtime, const FM95_Config config) {
runtime->lpf_r = iirfilt_rrrf_create_prototype(LIQUID_IIRDES_CHEBY2, LIQUID_IIRDES_LOWPASS, LIQUID_IIRDES_SOS, config.lpf_order, (config.lpf_cutoff/config.sample_rate), 0.0f, 1.0f, 60.0f);
}
#ifdef STEREO_SSB
runtime->stereo_hilbert = firhilbf_create(7, 60);
#endif
if(config.preemphasis != 0) {
init_preemphasis(&runtime->preemp_l, (float)config.preemphasis * 1.0e-6f, config.sample_rate, config.preemp_unity_freq);
init_preemphasis(&runtime->preemp_r, (float)config.preemphasis * 1.0e-6f, config.sample_rate, config.preemp_unity_freq);