shithub: soundpipe

ref: dd88a3bf36323b1917aad54943766529bcfbe9d0
dir: /h/butbp.h/

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

int sp_butbp_create(sp_butbp **p);
int sp_butbp_destroy(sp_butbp **p);
int sp_butbp_init(sp_data *sp, sp_butbp *p);
int sp_butbp_compute(sp_data *sp, sp_butbp *p, SPFLOAT *in, SPFLOAT *out);