@make_bpm_tab()
@make_bpm_tab(start:numeric)
@make_bpm_tab(start:numeric, stop:numeric)
returns a tab whose ith element is the BPM of the ith musical event in the score.
Called with no arguments, the events considered are all the events in
the score.  With a start, only the events whose position in beats is
greater than start are considered. If a stop is specified, all
events must have a position in beats between start and stop. Grace
events do not appear in the tab.
Examples:
       NOTE D6 1    
       NOTE C7 0
       NOTE D6 1/2
       BPM 30
       NOTE C7 1/5
       CHORD (D1 A7 Eb7) 1/8 
       Trill (CC6 D7 A7) 1/8 event6
@make_bpm_tab returns:
       TAB[60.0, 60.0, 30.0, 30.0, 30.0]
Function @make_duration_tab can be used to complete the bpm information with the duration information for an event.
See also the Antescofo Score @bach_score @make_bpm_map @make_bpm_tab @make_duration_map @make_duration_tab @make_label_bpm @make_label_duration @make_label_pitches @make_label_pos @make_pitch_tab @make_score_map @score_tempi @score_duration @specified_duration