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refactor filter functions and update FM modulator logic

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This commit is contained in:
KubaPro010
2025-03-08 19:53:59 +01:00
parent 6acb8cd5da
commit 90fabff616
5 changed files with 12 additions and 40 deletions
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7
lib/fm_modulator.c
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@@ -3,12 +3,13 @@
void init_fm_modulator(FMModulator *fm, float frequency, float deviation, float sample_rate) {
fm->frequency = frequency;
fm->deviation = deviation;
init_oscillator(&fm->osc, frequency, sample_rate);
fm->sample_rate = sample_rate;
fm->osc_phase = 0.0f;
}
float modulate_fm(FMModulator *fm, float sample) {
float inst_freq = fm->frequency+(sample*fm->deviation);
if (inst_freq < 0.0f) inst_freq = 0.0f;
change_oscillator_frequency(&fm->osc, inst_freq);
return get_oscillator_sin_sample(&fm->osc);
fm->osc_phase += fmodf(fm->osc_phase + ((M_2PI * inst_freq) / fm->sample_rate), M_2PI);
return sinf(fm->osc_phase);
}