fix: invert sign of group delay

ttrftech · Oct 21, 2019 · 1cf19fa · 1cf19fa
1 parent b807904
commit 1cf19fa
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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))