-# and have a lot of fun vocoding the crap out of your formant channel
-CARRIER_TONE="alsasrc device=hw:Loopback,1,0 ! audioconvert"
+# and have a lot of fun vocoding the crap out of your formant channel.
+CARRIER_TONE="alsamidisrc ports=128:0 ! fluiddec synth-gain=1 ! audioconvert"