--- a/webaudio/specification.html	Fri Aug 30 18:15:30 2013 +0200
+++ b/webaudio/specification.html	Fri Aug 30 18:15:31 2013 +0200
@@ -3709,12 +3709,12 @@
 
 <dl>
   <dt id="dfn-frequency"><code>frequency</code></dt>
-    <dd><p>The frequency (in Hertz) of the periodic waveform. This parameter is <em>a-rate</em> </p>
+    <dd><p>The frequency (in Hertz) of the periodic waveform. Its default <code>value</code> is 440. This parameter is <em>a-rate</em> </p>
     </dd>
 </dl>
 <dl>
   <dt id="dfn-detune"><code>detune</code></dt>
-    <dd><p>A detuning value (in Cents) which will offset the <code>frequency</code> by the given amount.
+    <dd><p>A detuning value (in Cents) which will offset the <code>frequency</code> by the given amount. Its default <code>value</code> is 0.
      This parameter is <em>a-rate</em> </p>
     </dd>
 </dl>