#N canvas 536 250 728 456 10;
#X text 285 209 where y[n] is the output \, x[n] the input \, and a[n]
the filter coefficient (all complex numbers). The filter is always
stable.;
#X text 348 189 y[n] = - a[n] * x[n] + x[n-1];
#X text 286 258 The transfer function is H(Z) = -a + Z^-1.;
#X obj 139 140 osc~ 100;
#X msg 147 165 clear;
#X obj 173 216 sig~;
#X obj 207 238 sig~;
#X obj 243 258 sig~;
#X msg 154 191 set 0.6 0.8;
#X obj 138 281 czero_rev~ 0.9 0.4;
#X text 98 36 complex one-zero (non-recursive) "reverse" filter \,
raw;
#X text 180 70 [czero_rev~] filters a complex audio signal (first two
inlets) via a one-zero filter \, whose coefficients are controlled
by creation arguments or by another complex audio signal (remaining
two inlets). The impulse response is that of "rzero" reversed in time.
;
#X text 288 168 The action of [czero_rev~] is:;
#X connect 3 0 9 0;
#X connect 4 0 9 0;
#X connect 5 0 9 1;
#X connect 6 0 9 2;
#X connect 7 0 9 3;
#X connect 8 0 9 0;
