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csswg/css3-speech Overview.html,1.83,1.84 Overview.src.html,1.84,1.85

From: Daniel Weck via cvs-syncmail <cvsmail@w3.org>
Date: Thu, 14 Jul 2011 18:33:32 +0000
To: public-css-commits@w3.org
Message-Id: <E1QhQj6-00032f-Km@lionel-hutz.w3.org>
Update of /sources/public/csswg/css3-speech
In directory hutz:/tmp/cvs-serv11419

Modified Files:
	Overview.html Overview.src.html 
Log Message:
improved definition of a semitone


Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.html,v
retrieving revision 1.83
retrieving revision 1.84
diff -u -d -r1.83 -r1.84
--- Overview.html	13 Jul 2011 23:15:01 -0000	1.83
+++ Overview.html	14 Jul 2011 18:33:30 -0000	1.84
@@ -2245,10 +2245,15 @@
     <p> Specifies a relative change (decrement or increment) to the inherited
      value. The syntax of allowed values is a &lt;<a
      href="#number-def">number</a>&gt; followed immediately by "st"
-     (semitones). A semitone is half of a tone (a half step) on the standard
-     diatonic scale. As such, a semitone doesn't correspond to a fixed
-     frequency: the ratio between two consecutive frequencies separated by
-     exactly one semitone is the twelfth root of two (approximately 1.05946).</p>
+     (semitones). A semitone interval corresponds to the step between each
+     note on a equal temperament chromatic scale. A semitone can therefore be
+     quantified as the difference between two consecutive pitch frequencies
+     on such scale. The ratio between two consecutive frequencies separated
+     by exactly one semitone is the twelfth root of two (approximately
+     1.05946). As a result, the value in Hertz corresponding to a semitone
+     offset is relative to the initial frequency the offset is applied to (in
+     other words, a semitone doesn't correspond to a fixed numerical value in
+     Hertz).</p>
 
    <dt> <strong>&lt;percentage&gt;</strong>
 
@@ -2388,10 +2393,15 @@
     <p> Specifies a relative change (decrement or increment) to the inherited
      value. The syntax of allowed values is a &lt;<a
      href="#number-def">number</a>&gt; followed immediately by "st"
-     (semitones). A semitone is half of a tone (a half step) on the standard
-     diatonic scale. As such, a semitone doesn't correspond to a fixed
-     frequency: the ratio between two consecutive frequencies separated by
-     exactly one semitone is the twelfth root of two (approximately 1.05946).</p>
+     (semitones). A semitone interval corresponds to the step between each
+     note on a equal temperament chromatic scale. A semitone can therefore be
+     quantified as the difference between two consecutive pitch frequencies
+     on such scale. The ratio between two consecutive frequencies separated
+     by exactly one semitone is the twelfth root of two (approximately
+     1.05946). As a result, the value in Hertz corresponding to a semitone
+     offset is relative to the initial frequency the offset is applied to (in
+     other words, a semitone doesn't correspond to a fixed numerical value in
+     Hertz).</p>
 
    <dt> <strong>&lt;percentage&gt;</strong>
 

Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.src.html,v
retrieving revision 1.84
retrieving revision 1.85
diff -u -d -r1.84 -r1.85
--- Overview.src.html	13 Jul 2011 23:15:01 -0000	1.84
+++ Overview.src.html	14 Jul 2011 18:33:30 -0000	1.85
@@ -1789,10 +1789,13 @@
       <dd>
         <p> Specifies a relative change (decrement or increment) to the inherited value. The syntax
           of allowed values is a &lt;<a href="#number-def">number</a>&gt; followed immediately by
-          "st" (semitones). A semitone is half of a tone (a half step) on the standard diatonic
-          scale. As such, a semitone doesn't correspond to a fixed frequency: the ratio between two
-          consecutive frequencies separated by exactly one semitone is the twelfth root of two
-          (approximately 1.05946).</p>
+          "st" (semitones). A semitone interval corresponds to the step between each note on a equal
+          temperament chromatic scale. A semitone can therefore be quantified as the difference
+          between two consecutive pitch frequencies on such scale. The ratio between two consecutive
+          frequencies separated by exactly one semitone is the twelfth root of two (approximately
+          1.05946). As a result, the value in Hertz corresponding to a semitone offset is relative
+          to the initial frequency the offset is applied to (in other words, a semitone doesn't
+          correspond to a fixed numerical value in Hertz). </p>
       </dd>
       <dt>
         <strong>&lt;percentage&gt;</strong>
@@ -1926,10 +1929,13 @@
       <dd>
         <p> Specifies a relative change (decrement or increment) to the inherited value. The syntax
           of allowed values is a &lt;<a href="#number-def">number</a>&gt; followed immediately by
-          "st" (semitones). A semitone is half of a tone (a half step) on the standard diatonic
-          scale. As such, a semitone doesn't correspond to a fixed frequency: the ratio between two
-          consecutive frequencies separated by exactly one semitone is the twelfth root of two
-          (approximately 1.05946).</p>
+          "st" (semitones). A semitone interval corresponds to the step between each note on a equal
+          temperament chromatic scale. A semitone can therefore be quantified as the difference
+          between two consecutive pitch frequencies on such scale. The ratio between two consecutive
+          frequencies separated by exactly one semitone is the twelfth root of two (approximately
+          1.05946). As a result, the value in Hertz corresponding to a semitone offset is relative
+          to the initial frequency the offset is applied to (in other words, a semitone doesn't
+          correspond to a fixed numerical value in Hertz).</p>
       </dd>
       <dt>
         <strong>&lt;percentage&gt;</strong>
Received on Thursday, 14 July 2011 18:33:37 GMT

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