fold
Files: fold.h, fold.c
Adds artificial foldover to an audio signal
Primarily created for use with Decimator.
sp_fold_create(sp_fold **fold)
sp_fold_init(sp_data *sp, sp_fold *fold)
sp_fold_compute(sp_data *sp, sp_fold *fold, SPFLOAT *input, SPFLOAT *out)
sp_fold_destroy(sp_fold **fold)
Optional Parameters
incr: Increment
(Default value: 1000)
Inputs
input: Signal input.
Outputs
out: Signal output.
Example Code
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "soundpipe.h"
typedef struct {
sp_fold *fold;
sp_osc *osc;
sp_ftbl *ft;
} UserData;
void process(sp_data *sp, void *udata) {
UserData *ud = udata;
SPFLOAT osc = 0, fold = 0;
sp_osc_compute(sp, ud->osc, NULL, &osc);
sp_fold_compute(sp, ud->fold, &osc, &fold);
sp->out[0] = fold;
}
int main() {
srand(1234567);
UserData ud;
sp_data *sp;
sp_create(&sp);
sp_fold_create(&ud.fold);
sp_osc_create(&ud.osc);
sp_ftbl_create(sp, &ud.ft, 2048);
sp_fold_init(sp, ud.fold);
sp_gen_sine(sp, ud.ft);
sp_osc_init(sp, ud.osc, ud.ft, 0);
sp->len = 44100 * 5;
sp_process(sp, &ud, process);
sp_fold_destroy(&ud.fold);
sp_ftbl_destroy(&ud.ft);
sp_osc_destroy(&ud.osc);
sp_destroy(&sp);
return 0;
}