Create a Tempo object.
Tempo objects represent tempo marks.
Tempo(tempo, unit = NULL, bar = NULL, offset = NULL)A number between 5 and 999 which indicates how many quarter notes per minute the tempo is.
Optional. A duration notation, its abbreviation, or duration
value corresponding to "whole", "half", "quarter", "eighth", "16th", with
or without a dot. The default unit is "quarter".
Optional. A positive integer which indicates the number of
the measure at which to add the Tempo object. By default, a Tempo
object will be added at the first measure.
Optional. A duration value, sum of duration values or 0,
which indicates the position in a measure, at which to add the Tempo
object. The default value is 0.
A list with class Tempo.
+.Music() for adding Tempo objects to a Music object.
vignette("gm", package = "gm") for details about duration notations
and duration values.
# create a Tempo object
Tempo(200)
#> Tempo quarter = 200
# set unit in a Tempo object
Tempo(120, unit = "half.")
#> Tempo half. = 40
# add Tempo objects to a Music object
Music() + Tempo(200) + Tempo(100, bar = 10, offset = 1)
#> Music
#>
#> Tempos
#>
#> * quarter = 200 at bar 1
#> * quarter = 100 at bar 10 with offset 1