--- a/webaudio/specification.html	Tue Nov 13 15:47:25 2012 -0800
+++ b/webaudio/specification.html	Tue Nov 13 16:02:50 2012 -0800
@@ -1523,7 +1523,14 @@
     </li>
 
     </ol>
-
+    </p>
+    
+    <p>
+    The <em>computedValue</em> is constantly being updated by the audio rendering thread at each rendering time quantum.
+    Thus when the main JavaScript thread reads this value, then it will reflect the latest computed value.
+    This will mean that reading computedValue twice in a row will potentially return different results
+    if the audio thread's computations have changed the computed value of an AudioParam.  This is similar to how
+    calling <code>performance.now()</code> will return an different up-to-date high-resolution time if called two times in a row.
     </p>
     </dd>
 </dl>