Type:
duration: sequence -> (integer, integer)
Call syntax:
duration(seq)
Description:
duration returns the
the relative duration of sequence seq
as a fraction enum /
denom which is represented as the
2-element list (enum, denom).
The computation of the duration is solely based on
the values of the notes within seq, tempo
settings are insignificant.
The empty sequence [ ] has a duration of (0,1).
Example:
> duration([c1/4. e/8 f/2])
Result= LIST(1,1)
> duration([_*5/8 _/4..])
Result= LIST(17,16)
> duration([ ])
Result= LIST(0,1)