Music Encoding Initiative Guidelines

Module
MEI
Used by
Remarks
Interval direction only:
u = up/higher,
d = down/lower,
s = same,
n = neutral/unknown,
sd = same or lower (but not higher),
su = same or higher (but not lower)
Interval direction, quality, and size:
optional sign,
optional quality indicator:
- A = augmented,
- d = diminished,
- M = major,
- m = minor,
- P = perfect
integer value
Interval in half steps:
optional sign,
decimal value
"hs"
Declaration

                                 <dataSpec xmlns="http://www.tei-c.org/ns/1.0" rend="add" ident="data.INTERVAL.MELODIC" module="MEI">
                                    
                                    <desc xml:lang="en">A token indicating direction of the interval but not its precise value, a diatonic
                                       interval (with optional direction and quality), or a decimal value in half steps.
                                       Decimal
                                       values are permitted to accommodate micro-tuning.</desc>
                                    
                                    <content>
                                       
                                       <alternate minOccurs="1" maxOccurs="1"><dataRef name="token">
                                             
                                             <dataFacet name="pattern" value="u|d|s|n|sd|su"/>
                                             </dataRef>
                                          <dataRef name="token">
                                             
                                             <dataFacet name="pattern" value="(\+|\-)?([AdMmP])?[0-9]+"/>
                                             </dataRef>
                                          <dataRef name="token">
                                             
                                             <dataFacet name="pattern" value="(\+|\-)?\d+(\.\d+)?hs"/>
                                             </dataRef>
</alternate>
                                       </content>
                                    
                                    <remarks xml:lang="en">
                                       
                                       <p>
                                          
                                          <list>
                                             
                                             <head>Interval direction only:</head>
                                             
                                             <item>u = up/higher,</item>
                                             
                                             <item>d = down/lower,</item>
                                             
                                             <item>s = same,</item>
                                             
                                             <item>n = neutral/unknown,</item>
                                             
                                             <item>sd = same or lower (but not higher),</item>
                                             
                                             <item>su = same or higher (but not lower)</item>
                                             </list>
                                          </p>
                                       
                                       <p>
                                          
                                          <list>
                                             
                                             <head>Interval direction, quality, and size:</head>
                                             
                                             <item>optional sign,</item>
                                             
                                             <item>
                                                
                                                <list>
                                                   
                                                   <head>optional quality indicator:</head>
                                                   
                                                   <item>A = augmented,</item>
                                                   
                                                   <item>d = diminished,</item>
                                                   
                                                   <item>M = major,</item>
                                                   
                                                   <item>m = minor,</item>
                                                   
                                                   <item>P = perfect</item>
                                                   </list>
                                                </item>
                                             
                                             <item>integer value</item>
                                             </list>
                                          </p>
                                       
                                       <p>
                                          
                                          <list>
                                             
                                             <head>Interval in half steps:</head>
                                             
                                             <item>optional sign,</item>
                                             
                                             <item>decimal value</item>
                                             
                                             <item>"hs"</item>
                                             </list>
                                          </p>
                                       </remarks>
                                    </dataSpec>