shithub: soundpipe

ref: dd88a3bf36323b1917aad54943766529bcfbe9d0
dir: /h/butbr.h/

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typedef struct {
    SPFLOAT freq, bw;
    SPFLOAT lfreq, lbw;
    SPFLOAT a[7];
    SPFLOAT pidsr, tpidsr;
} sp_butbr;

int sp_butbr_create(sp_butbr **p);
int sp_butbr_destroy(sp_butbr **p);
int sp_butbr_init(sp_data *sp, sp_butbr *p);
int sp_butbr_compute(sp_data *sp, sp_butbr *p, SPFLOAT *in, SPFLOAT *out);