RESAMP_BITS
s = f[c] >> RESAMP_BITS;
s = (int64_t)s * p->filt_cutoff >> RESAMP_BITS;
#define RESAMP_UNIT (1 << RESAMP_BITS)
#define RESAMP_STEP_BITS (RESAMP_BITS - 6)
s = f[c] >> RESAMP_BITS;
s = (int64_t)s * p->filt_cutoff >> RESAMP_BITS;
#define RESAMP_UNIT (1 << RESAMP_BITS)
#define RESAMP_STEP_BITS (RESAMP_BITS - 6)