diff --git a/local/bin/noise b/local/bin/noise
index 1efb5f1..fcad724 100755
--- a/local/bin/noise
+++ b/local/bin/noise
@@ -1,10 +1,6 @@
 #!/bin/sh
 
-len='7:00:00'
-
-if [ "$1" != '' ]; then
-  len=$1
-fi
-
-play -t sl - synth $len  brownnoise \
-     band -n 1200 200 tremolo 20 .1 < /dev/zero
+case "$1" in
+    "binaural") play -n -t sl - synth sine %-29 sine %-30 ;;
+    "brown"|*)  play -t sl - synth brownnoise band -n 1200 200 tremolo 20 .1 < /dev/zero ;;
+esac