Update required sample rate support range

Author: Michael Wilson

index.bs

@@ -677,6 +677,15 @@ of their replacements:
 <h2 id="audioapi">
 The Audio API</h2>
 
+<h3 id="sample-rates">Supported Sample Rates</h3>
+
+<p>
+Implementations MUST support sample rates between 3000 Hz and 768000 Hz,
+inclusive. A {{NotSupportedError}} MUST be thrown if a sample rate outside this
+range is specified.
+</p>
+
+
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@@ -979,7 +988,7 @@ Methods</h4>
         <pre class=argumentdef for="BaseAudioContext/createBuffer()">
         numberOfChannels: Determines how many channels the buffer will have. An implementation MUST support at least 32 channels.
         length: Determines the size of the buffer in sample-frames.  This MUST be at least 1.
-        sampleRate: Describes the sample-rate of the [=linear PCM=] audio data in the buffer in sample-frames per second. An implementation MUST support sample rates in at least the range 8000 to 96000.
+        sampleRate: Describes the sample-rate of the [=linear PCM=] audio data in the buffer in sample-frames per second. See [[#sample-rates]] for the required supported range.
         </pre>
         <div>
             <em>Return type:</em> {{AudioBuffer}}
@@ -2345,11 +2354,8 @@ Dictionary {{AudioContextOptions}} Members</h5>
     : <dfn>sampleRate</dfn>
     ::
         Set the {{BaseAudioContext/sampleRate}} to this value
-        for the {{AudioContext}} that will be created. The
-        supported values are the same as the sample rates for an
-        {{AudioBuffer}}. <span class="synchronous">A
-        {{NotSupportedError}} exception MUST be thrown if
-        the specified sample rate is not supported.</span>
+        for the {{AudioContext}} that will be created. See
+        [[#sample-rates]] for the required supported range.
 
         If {{AudioContextOptions/sampleRate}} is not
         specified, the preferred sample rate of the output device for
@@ -2557,7 +2563,7 @@ Constructors</h4>
         <pre class=argumentdef for="OfflineAudioContext/constructor(numberOfChannels, length, sampleRate)">
         numberOfChannels: Determines how many channels the buffer will have. See {{BaseAudioContext/createBuffer()}} for the supported number of channels.
         length: Determines the size of the buffer in sample-frames.
-        sampleRate: Describes the sample-rate of the [=linear PCM=] audio data in the buffer in sample-frames per second. See {{BaseAudioContext/createBuffer()}} for valid sample rates.
+        sampleRate: Describes the sample-rate of the [=linear PCM=] audio data in the buffer in sample-frames per second. See [[#sample-rates]] for the required supported range.
         </pre>
 </dl>
 
@@ -2794,7 +2800,8 @@ Dictionary {{OfflineAudioContextOptions}} Members</h5>
 
     : <dfn>sampleRate</dfn>
     ::
-        The sample rate for this {{OfflineAudioContext}}.
+        The sample rate for this {{OfflineAudioContext}}. See
+        [[#sample-rates]] for the required supported range.
 
     : <dfn>renderSizeHint</dfn>
     ::
@@ -3143,7 +3150,7 @@ The allowed values for the members of this dictionary are constrained.  See {{Ba
 
     : <dfn>sampleRate</dfn>
     ::
-        The sample rate in Hz for the buffer.  See {{BaseAudioContext/createBuffer()/sampleRate}} for constraints.
+        The sample rate in Hz for the buffer. See [[#sample-rates]] for the required supported range.
 </dl>