diff options
Diffstat (limited to 'iemlib1')
| -rw-r--r-- | iemlib1/src/biquad_freq_resp.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/iemlib1/src/biquad_freq_resp.c b/iemlib1/src/biquad_freq_resp.c index e95a84c..4fe9d31 100644 --- a/iemlib1/src/biquad_freq_resp.c +++ b/iemlib1/src/biquad_freq_resp.c @@ -25,20 +25,21 @@ typedef struct _biquad_freq_resp static t_class *biquad_freq_resp_class; -static void biquad_freq_resp_float(t_biquad_freq_resp *x, t_floatarg f) +static void biquad_freq_resp_float(t_biquad_freq_resp *x, t_floatarg freq_phase) { t_float re1, im1, re2, im2; t_float c, s, a; + t_float pi = 4.0f * atan(1.0f); - if(f < 0.0f) - f = 0.0f; - else if(f > 180.0f) - f = 180.0; - f *= 3.14159265f; - f /= 180.0f; + if(freq_phase < 0.0f) + freq_phase = 0.0f; + else if(freq_phase > 180.0f) + freq_phase = 180.0; + freq_phase *= pi; + freq_phase /= 180.0f; - c = cos(f); - s = sin(f); + c = cos(freq_phase); + s = sin(freq_phase); re1 = x->a0 + x->a1*c + x->a2*(c*c - s*s); im1 = x->a1*s + x->a2*2.0f*(s*c); @@ -81,6 +82,5 @@ void biquad_freq_resp_setup(void) biquad_freq_resp_class = class_new(gensym("biquad_freq_resp"), (t_newmethod)biquad_freq_resp_new, 0, sizeof(t_biquad_freq_resp), 0, 0); class_addfloat(biquad_freq_resp_class, biquad_freq_resp_float); - class_addlist(biquad_freq_resp_class, (t_method)biquad_freq_resp_list); -// class_sethelpsymbol(biquad_freq_resp_class, gensym("iemhelp/help-biquad_freq_resp")); + class_addlist(biquad_freq_resp_class, (t_method)biquad_freq_resp_list); } |