shithub: sox

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fix average RMS calcs

--- a/src/stats.c

+++ b/src/stats.c

@@ -94,16 +94,14 @@

     p->sigma_x += d;

     p->sigma_x2 += sqr(d);

-

-    if (!p->avg_sigma_x2)

-      p->avg_sigma_x2 = sqr(d);

     p->avg_sigma_x2 = p->avg_sigma_x2 * p->mult + (1 - p->mult) * sqr(d);

-    if (p->avg_sigma_x2 > p->max_sigma_x2)

-      p->max_sigma_x2 = p->avg_sigma_x2;

-    else if (p->avg_sigma_x2 < p->min_sigma_x2 && p->num_samples >= p->tc_samples)

-      p->min_sigma_x2 = p->avg_sigma_x2;

-

+    if (p->num_samples >= p->tc_samples) {

+      if (p->avg_sigma_x2 > p->max_sigma_x2)

+        p->max_sigma_x2 = p->avg_sigma_x2;

+      if (p->avg_sigma_x2 < p->min_sigma_x2)

+        p->min_sigma_x2 = p->avg_sigma_x2;

+    }

     p->last = d;

     p->mask |= *ibuf;

   }