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mirror of https://github.com/radio95-rnt/fm95.git synced 2026-02-26 19:23:51 +01:00

mpx seperation

This commit is contained in:
2026-02-15 18:18:54 +01:00
parent 743df55b00
commit 73396a6cba
5 changed files with 20 additions and 16 deletions

View File

@@ -13,7 +13,7 @@ void init_stereo_encoder(StereoEncoder* st, uint8_t stereo_ssb, uint8_t multipli
} else st->stereo_hilbert = NULL;
}
float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right) {
float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right, float *audio) {
float mid = (left+right) * 0.5f;
if(!enabled) return mid * st->audio_volume;
@@ -35,12 +35,12 @@ float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right)
}
float signalx2 = get_oscillator_sin_multiplier_ni(st->osc, st->multiplier * 2.0f);
*audio = (mid*half_audio);
if(st->stereo_hilbert) {
float stereo = (crealf(stereo_hilbert) * signalx2cos) + (cimagf(stereo_hilbert) * signalx2);
return (mid*half_audio) + (signalx1*st->pilot_volume) + (stereo * half_audio);
} else {
return (mid*half_audio) + (signalx1*st->pilot_volume) + ((side*signalx2) * half_audio);
}
*audio += (stereo * half_audio)
} else *audio += ((side*signalx2) * half_audio);
return (signalx1*st->pilot_volume);
}
void exit_stereo_encoder(StereoEncoder* st) {

View File

@@ -18,5 +18,5 @@ typedef struct
} StereoEncoder;
void init_stereo_encoder(StereoEncoder *st, uint8_t stereo_ssb, uint8_t multiplier, Oscillator *osc, float audio_volume, float pilot_volume);
float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right);
float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right, float *audio);
void exit_stereo_encoder(StereoEncoder* st);