--- a/webaudio/specification.html	Tue Apr 30 11:58:25 2013 -0700
+++ b/webaudio/specification.html	Tue Apr 30 12:02:26 2013 -0700
@@ -2422,6 +2422,7 @@
     numberOfInputs  : 1
     numberOfOutputs : 1
 
+    channelCount = numberOfInputChannels;
     channelCountMode = "explicit";
     channelInterpretation = "speakers";
 </pre>