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/*:filterkit.h */
/*
* FilterUp() - Applies a filter to a given sample when up-converting.
* FilterUD() - Applies a filter to a given sample when up- or down-
* converting.
*/
fast_float FilterUp(mem_float Imp[], mem_float ImpD[], int Nwing,
boolean Interp, mem_float *Xp, double Ph, int Inc);
fast_float FilterUD(mem_float Imp[], mem_float ImpD[], int Nwing,
boolean Interp, mem_float *Xp, double Ph, int Inc,
double dhb);
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