diff --git a/test.lua b/test.lua
index c486336..1de3880 100644
--- a/test.lua
+++ b/test.lua
@@ -1,6 +1,8 @@
 function init(nstrip, nmod)
 	print("Initializing with "..nstrip.." strips with "..nmod.." modules each.")
 
+	print("Sampling rate: "..CONFIG['sampling_rate'].." Hz")
+
 	local nled = nstrip * nmod
 
 	red = {}
@@ -20,6 +22,10 @@ function init(nstrip, nmod)
 end
 
 function periodic()
-	print("Going round and round...")
+	bass   = sigproc:get_energy_in_band(0, 400)
+	mid    = sigproc:get_energy_in_band(400, 4000)
+	treble = sigproc:get_energy_in_band(4000, 20000)
+
+	print("Bass: "..bass.." – Mid: "..mid.." – Treble: "..treble)
 	return red, green, blue, white
 end