|  | Name | Description | 
            
              |   | Duration(NoteValue) | Returns source note value duration.  For example, 0.25 will be returned for
            a quater note, 1.0 will be returned for a whole note, etc. | 
            
              |   | Duration(NoteValueBritish) | Returns source note value duration.  For example, 0.25 will be returned for
            a crotchet note, 1.0 will be returned for a semibreve note, etc. | 
            
              |   | Duration(NoteValue, NoteValue) | Returns source note value duration in terms of given reference note value.
            For example, if measure size is 3/4 then reference is quarter notes and returned
            value will be equivalent number of quarter notes for given source note. | 
            
              |   | Duration(NoteValue, Int32) | Returns source note value duration.  For example, 0.25 will be returned for
            a quater note, 1.0 will be returned for a whole note, etc. | 
            
              |   | Duration(NoteValueBritish, NoteValueBritish) | Returns source note value duration in terms of given reference note value.
            For example, if measure size is 3/4 then reference is quarter notes and returned
            value will be equivalent number of quarter notes for given source note. | 
            
              |   | Duration(NoteValueBritish, Int32) | Returns source note value duration.  For example, 0.25 will be returned for
            a crotchet note, 1.0 will be returned for a semibreve note, etc. | 
            
              |   | Duration(NoteValue, NoteValue, Int32) | Returns source note value duration in terms of given reference note value.
            For example, if measure size is 3/4 then reference is quarter notes and returned
            value will be equivalent number of quarter notes for given source note. | 
            
              |   | Duration(NoteValueBritish, NoteValueBritish, Int32) | Returns source note value duration in terms of given reference note value.
            For example, if measure size is 3/4 then reference is quarter notes and returned
            value will be equivalent number of quarter notes for given source note. |