fix: invert sign of group delay

6 years ago · 1cf19fa50a
parent b80790477c
commit 1cf19fa50a
1 changed files with 1 additions and 1 deletions
--- a/plot.c
+++ b/plot.c
@ -442,7 +442,7 @@ float phase(float *v)
 /*
 * calculate groupdelay
 */
-float groupdelay(float *w, float *v, float deltaf)
+float groupdelay(float *v, float *w, float deltaf)
 {
 #if 1
  // atan(w)-atan(v) = atan((w-v)/(1+wv))