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Rack/plugins/community/repos/huaba/src/eq3.hpp

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  1. typedef struct

  2. {

  3.   // Filter #1 (Low band)

  4.   double  lf;       // Frequency

  5.   double  f1p0;     // Poles ...

  6.   double  f1p1;    

  7.   double  f1p2;

  8.   double  f1p3;

  9. 

  10.   // Filter #2 (High band)

  11.   double  hf;       // Frequency

  12.   double  f2p0;     // Poles ...

  13.   double  f2p1;

  14.   double  f2p2;

  15.   double  f2p3;

  16. 

  17.   // Sample history buffer

  18.   double  sdm1;     // Sample data minus 1

  19.   double  sdm2;     //                   2

  20.   double  sdm3;     //                   3

  21. 

  22.   // Gain Controls

  23.   double  lg;       // low  gain

  24.   double  mg;       // mid  gain

  25.   double  hg;       // high gain

  26.   

  27. } EQSTATE;  

  28. 

  29. // Exports 

  30. extern void   init_3band_state(EQSTATE* es, int lowfreq, int highfreq, int mixfreq);

  31. extern double do_3band(EQSTATE* es, double sample);