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filter parameter tweaks

This commit is contained in:
Gordon JC Pearce 2023-06-20 21:21:27 +01:00
parent 699600315c
commit 0b66a8d893
1 changed files with 15 additions and 2 deletions
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17
plugins/Nekobi/nekobee-src/nekobee_voice_render.c
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@ -165,12 +165,25 @@ void vcf(nekobee_synth_t *synth, float *out, uint32_t count) {
// printf("cutoff = %04fHz, ct=%f\n", cutoff, ct);
float hpc = 6.28 * 16 * synth->deltat;
float fout, hp;
float fout, fb, hp;
for (uint32_t i = 0; i < count; i++) {
for (uint32_t ovs = 0; ovs < 4; ovs++) {
float in = voice->osc_audio[i];
float fb = tanh(in - ((fout - 0.25*in) * synth->resonance * 6));
float clip = 1.0;
fb = (in - ((fout - .33*in) * synth->resonance * 4)) / clip;
//fb = in * synth->resonance*5;
if (fb > 1) fb=1;
if (fb < -1) fb=-1;
fb = 1.5 * fb - 0.5 * fb*fb*fb;
fb *= clip;
//fb *= 0.5;
delay1 = ((fb - delay1) * ct) + delay1;
delay2 = ((delay1 - delay2) * ct) + delay2;