Shebang, +x bit

diff --git a/tools/gen_sound.py b/tools/gen_sound.py
old mode 100644 (file)
new mode 100755 (executable)
index db37d82..7b13a81
--- a/tools/gen_sound.py
+++ b/tools/gen_sound.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # Generate imperfect sine waves
 #
 # Design notes. Produces ~= (user requested) s of raw audio