diff --git a/index.bs b/index.bs
index 0bcdafb1..31277978 100644
--- a/index.bs
+++ b/index.bs
@@ -938,40 +938,40 @@ In this version of the specification, [=loudspeaker_layout=] indicates one of th
   <th>loudspeaker_layout</th><th>Channel Layout</th><th>Loudspeaker Location Ordering</th><th>Reference</th>
 </tr>
 <tr>
-  <td>0000</td><td>Mono</td><td>C</td><td></td>
+  <td>0</td><td>Mono</td><td>C</td><td></td>
 </tr>
 <tr>
-  <td>0001</td><td>Stereo</td><td>L/R</td><td>[=Loudspeaker configuration for Sound System A (0+2+0)=] of [[!ITU-2051-3]]</td>
+  <td>1</td><td>Stereo</td><td>L/R</td><td>[=Loudspeaker configuration for Sound System A (0+2+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>0010</td><td>5.1ch</td><td>L/C/R/Ls/Rs/LFE</t><td>[=Loudspeaker configuration for Sound System B (0+5+0)=] of [[!ITU-2051-3]]</td>
+  <td>2</td><td>5.1ch</td><td>L/C/R/Ls/Rs/LFE</t><td>[=Loudspeaker configuration for Sound System B (0+5+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>0011</td><td>5.1.2ch</td><td>L/C/R/Ls/Rs/Ltf/Rtf/LFE</td><td>[=Loudspeaker configuration for Sound System C (2+5+0)=] of [[!ITU-2051-3]]</td>
+  <td>3</td><td>5.1.2ch</td><td>L/C/R/Ls/Rs/Ltf/Rtf/LFE</td><td>[=Loudspeaker configuration for Sound System C (2+5+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>0100</td><td><dfn noexport>5.1.4ch</dfn></td><td>L/C/R/Ls/Rs/Ltf/Rtf/Ltr/Rtr/LFE</td><td>[=Loudspeaker configuration for Sound System D (4+5+0)=] of [[!ITU-2051-3]]</td>
+  <td>4</td><td><dfn noexport>5.1.4ch</dfn></td><td>L/C/R/Ls/Rs/Ltf/Rtf/Ltr/Rtr/LFE</td><td>[=Loudspeaker configuration for Sound System D (4+5+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>0101</td><td><dfn noexport>7.1ch</dfn></td><td>L/C/R/Lss/Rss/Lrs/Rrs/LFE</td><td>[=Loudspeaker configuration for Sound System I (0+7+0)=] of [[!ITU-2051-3]]</td>
+  <td>5</td><td><dfn noexport>7.1ch</dfn></td><td>L/C/R/Lss/Rss/Lrs/Rrs/LFE</td><td>[=Loudspeaker configuration for Sound System I (0+7+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>0110</td><td>7.1.2ch</td><td>L/C/R/Lss/Rss/Lrs/Rrs/Ltf/Rtf/LFE</td><td>The combination of [=7.1ch=] and the Left and Right top front pair of [=7.1.4ch=]</td>
+  <td>6</td><td>7.1.2ch</td><td>L/C/R/Lss/Rss/Lrs/Rrs/Ltf/Rtf/LFE</td><td>The combination of [=7.1ch=] and the Left and Right top front pair of [=7.1.4ch=]</td>
 </tr>
 <tr>
-  <td>0111</td><td><dfn noexport>7.1.4ch</dfn></td><td>L/C/R/Lss/Rss/Lrs/Rrs/Ltf/Rtf/Ltb/Rtb/LFE</td><td>[=Loudspeaker configuration for Sound System J (4+7+0)=] of [[!ITU-2051-3]]</td>
+  <td>7</td><td><dfn noexport>7.1.4ch</dfn></td><td>L/C/R/Lss/Rss/Lrs/Rrs/Ltf/Rtf/Ltb/Rtb/LFE</td><td>[=Loudspeaker configuration for Sound System J (4+7+0)=] of [[!ITU-2051-3]]</td>
 </tr>
 <tr>
-  <td>1000</td><td>3.1.2ch</th><th>L/C/R/Ltf/Rtf/LFE</td><td>The front subset (L/C/R/Ltf/Rtf/LFE) of [=7.1.4ch=]</td>
+  <td>8</td><td>3.1.2ch</th><th>L/C/R/Ltf/Rtf/LFE</td><td>The front subset (L/C/R/Ltf/Rtf/LFE) of [=7.1.4ch=]</td>
 </tr>
 <tr>
-  <td>1001</td><td>Binaural</td><td>L/R</td><td></td>
+  <td>9</td><td>Binaural</td><td>L/R</td><td></td>
 </tr>
 <tr>
-  <td>1010 ~ 1110</td><td>Reserved</td><td></td><td></td>
+  <td>10 ~ 14</td><td>Reserved</td><td></td><td></td>
 </tr>
 <tr>
-  <td>1111</td><td>Expanded channel layouts</td><td></td><td>Loudspeaker configurations defined in the [=expanded_loudspeaker_layout=] field</td>
+  <td>15</td><td>Expanded channel layouts</td><td></td><td>Loudspeaker configurations defined in the [=expanded_loudspeaker_layout=] field</td>
 </tr>
 
 </table>
@@ -1474,8 +1474,8 @@ layout_type : Layout type
  - 7: It indicates [=Loudspeaker configuration for Sound System H (9+10+3)=]
  - 8: It indicates [=Loudspeaker configuration for Sound System I (0+7+0)=]
  - 9: It indicates [=Loudspeaker configuration for Sound System J (4+7+0)=]
- - 10: It indicates the same loudspeaker configuration as [=loudspeaker_layout=] = 0110 (i.e., 7.1.2ch)
- - 11: It indicates the same loudspeaker configuration as [=loudspeaker_layout=] = 1000 (i.e., 3.1.2ch)
+ - 10: It indicates the same loudspeaker configuration as [=loudspeaker_layout=] = 6 (i.e., 7.1.2ch)
+ - 11: It indicates the same loudspeaker configuration as [=loudspeaker_layout=] = 8 (i.e., 3.1.2ch)
  - 12: It indicates Mono
  - 13: It indicates the same loudspeaker configuration as [=expanded_loudspeaker_layout=] = 8 (i.e., 9.1.6ch)
  - 14 ~ 15: Reserved