00001 /* Copyright 1993-1996 by J.O. Smith (jos@ccrma.stanford.edu). All rights reserved. */ 00002 /* Biquad filter - "direct-form II" */ 00003 00004 00005 typedef struct _biquadVars { 00006 pp output; 00007 pp input; 00008 word s2; 00009 word s1; 00010 word gain; 00011 word a2; 00012 word a1; 00013 word b2; 00014 word b1; 00015 } biquadVars; 00016 00017 extern void biquad(biquadVars *a); 00018 00019 00020 00021
1.5.6