fixed coefficients (thanks to B.Saylor

svn path=/trunk/externals/ggee/; revision=245

1 files changed, 3 insertions, 3 deletions

diff --git a/filters/equalizer.c b/filters/equalizer.c
index 80d8410..ea1ebec 100755
--- a/filters/equalizer.c
+++ b/filters/equalizer.c
@@ -30,10 +30,10 @@ void equ_bang(t_rbjfilter *x)
      t_float alpha = e_alpha(x->x_bw*0.01,omega);

      t_float b0 = 1 + alpha*e_A(x->x_gain);

      t_float b1 = -2.*cos(omega);

-     t_float b2 = 1;

-     t_float a0 = 1 + alpha;

+     t_float b2 = 1 - alpha*e_A(x->x_gain);

+     t_float a0 = 1 + alpha/e_A(x->x_gain);

      t_float a1 = -2.*cos(omega);

-     t_float a2 = 1 - alpha;

+     t_float a2 = 1 - alpha/e_A(x->x_gain);

 

 /*      post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw);*/