shithub: soundpipe

ref: 8a700fc7e0d8f2815e353de9aae8ad7b3594eb1a
dir: /h/buthp.h/

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typedef struct  {
    SPFLOAT freq;
    SPFLOAT lfreq;
    SPFLOAT a[7];
    SPFLOAT pidsr;
} sp_buthp;

int sp_buthp_create(sp_buthp **p);
int sp_buthp_destroy(sp_buthp **p);
int sp_buthp_init(sp_data *sp, sp_buthp *p);
int sp_buthp_compute(sp_data *sp, sp_buthp *p, SPFLOAT *in, SPFLOAT *out);