shithub: sox

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add peak level in dBFS

--- a/src/stat.c

+++ b/src/stat.c

@@ -228,7 +228,7 @@

  */

 static int sox_stat_stop(sox_effect_t * effp)

 {

-  priv_t * stat = (priv_t *) effp->priv;

+  priv_t * stat = (priv_t *) effp->priv, stat0 = *stat;

   double amp, scale, rms = 0, freq;

   double x, ct;

@@ -284,6 +284,7 @@

   fprintf(stderr, "RMS     delta:     %12.6f\n", sqrt(stat->dsum2/(ct-1)));

   freq = sqrt(stat->dsum2/stat->sum2)*effp->in_signal.rate/(M_PI*2);

   fprintf(stderr, "Rough   frequency: %12d\n", (int)freq);

+  fprintf(stderr, "Peak level (dBFS): %12.6f\n", 20 * log(stat0.scale * (1. / SOX_SAMPLE_MAX) * max(fabs(stat0.max), fabs(stat0.min))));

   if (amp>0)

     fprintf(stderr, "Volume adjustment: %12.3f\n", SOX_SAMPLE_MAX/(amp*scale));