radio95/fm95
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try fir

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This commit is contained in:
kuba
2026-07-11 14:21:51 +02:00
parent f9e6c136bc
commit b2cdac1b0d
1 changed files with 4 additions and 4 deletions
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src/fm95.c
+4 -4
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@@ -85,7 +85,7 @@ typedef struct {
bit_ring_t rds_bitring[4];
float rds_symbol[4];
uint8_t rds_last_bit[4];
iirfilt_rrrf rds_filter[4];
firfilt_rrrf rds_filter[4];
} FM95_Runtime;
typedef struct {
@@ -146,7 +146,7 @@ void cleanup_runtime(FM95_Runtime* runtime, const FM95_Config config) {
} exit_stereo_encoder(&runtime->stencode);
for(int i = 0; i < 4; i++) free(runtime->rds_bitring[i].bits);
for(int i = 0; i < 4; i++) iirfilt_rrrf_destroy(runtime->rds_filter[i]);
for(int i = 0; i < 4; i++) firfilt_rrrf_destroy(runtime->rds_filter[i]);
}
void cleanup_audio_runtime(FM95_Runtime *rt, const FM95_Options options) {
@@ -257,7 +257,7 @@ int run_fm95(FM95_Config* config, FM95_Runtime* runtime, FM95_RunResult* result)
if(osc_stream >= 13) osc_stream++;
float shaped = 0.0f;
iirfilt_rrrf_execute(runtime->rds_filter[stream], runtime->rds_symbol[stream] * clock, &shaped);
firfilt_rrrf_execute_one(runtime->rds_filter[stream], runtime->rds_symbol[stream] * clock, &shaped);
float carrier = get_oscillator_cos_multiplier_ni(&runtime->osc, osc_stream * 4.0f);
if(config->stereo_ssb) carrier = delay_line(&runtime->rds_delays[stream], carrier);
@@ -452,7 +452,7 @@ void init_runtime(FM95_Runtime* runtime, const FM95_Config config) {
runtime->rds_symbol[i] = -1.0f;
runtime->rds_last_bit[i] = 0;
runtime->rds_filter[i] = iirfilt_rrrf_create_prototype(LIQUID_IIRDES_CHEBY2, LIQUID_IIRDES_LOWPASS, LIQUID_IIRDES_SOS, 8, (4750.0f/config.sample_rate), 0.0f, 1.0f, 40.0f);
runtime->rds_filter[i] = firfilt_rrrf_create_kaiser(8, (2400.0f/config.sample_rate), 6.0f, 0.0f);
}
}