--- a/webaudio/specification.html	Fri Aug 24 15:02:43 2012 -0400
+++ b/webaudio/specification.html	Fri Aug 24 15:04:37 2012 -0400
@@ -1754,7 +1754,7 @@
     <span class="comment">// in seconds </span>
     readonly attribute float duration;
 
-    readonly attribute int numberOfChannels;
+    readonly attribute long numberOfChannels;
 
     Float32Array getChannelData(unsigned long channel);