ref: a2cfb2e79eda64b644d9bebd66421bd9404570fe
parent: 61f03a61dea6851272971781115fe42c9ee2eb55
author: robs <robs>
date: Sat Aug 2 09:26:52 EDT 2008
credit original author
--- a/scripts/alert.sh
+++ b/scripts/alert.sh
@@ -1,5 +1,7 @@
#!/bin/sh
+# Thanks to Reynir H. Stefánsson for the original version of this script.
+
# In marine radio, a Mayday emergency call is transmitted preceded by a
# 30-second alert sound. The alert sound comprises two audio tones at
# 1300Hz and 2100Hz alternating at a rate of 4Hz. This script shows how SoX
@@ -41,6 +43,6 @@
done
$SOX -c 1 -r 8000 alert.ul alert.au # Add a file header
-rm 2tones.ul alert.ul # Tidy up intermediate files
+rm 2tones.ul alert.ul # Tidy up intermediate files
$PLAY alert.au