Swayam Sahoo

Tempo

Overview

Tempo is a class to fetch the tempo and tempo changes in a Scopul object. It provides two properties bpm_list and midi_tempo_list which return the tempo information in bpm (beats per minute) and midi tempo format respectively.

Here is an example of how to acess the Tempo class for a Scopul object:

from Scopul import Scopul

scop = Scopul("test.mid")
tempo = scop.tempo_list[0]
print(tempo)

# Sample output
>>> <Tempo.Tempo object at 0x000001B737BBFC10>

Creating a Tempo object

Tempo(self, bpm: int, measure=None)

You can create your own note class, which you may use to append to the existing MIDI or use for other purposes

Args

• bpm : the tempo as an int in bpm (Beats Per Minute)
  • Ex. 64, which is middle C
• measure: The measure number of the tempo mark

To make create a Tempo class:

from Scopul import Tempo

my_note = Tempo(bpm=122, measure=5)

Properties

• bpm
  • Fetches the tempo in bpm
    • bpm is beats per minute
  • Returns:
    • An int, representing the bpm. Ex. 122
  • Example

      from Scopul import Scopul
            
      scopul_object = Scopul("test.mid")
      tempo = scopul_object.tempo_list[0]
            
      print(tempo.bpm)
    
      # Sample output
      >>> 60
    

    
    

• midi_tempo
  • Fetches the tempo in midi tempo
    • midi tempo is microseconds per beat
  • Returns:
    • An int, representing the midi tempo. Ex. 50000
  • Example

      from Scopul import Scopul
            
      scopul_object = Scopul("test.mid")
      tempo = scopul_object.tempo_list[0]
    
      print(tempo.midi_tempo)
    
      # Sample output
      >>> 1000000
    

• measure
  • Gets the measure in which this tempo mark appeared in
  • Returns
    • an int, representing the measure number. For example: 5
  • Example

      from Scopul import Scopul
    
      scop = Scopul("test.mid")
    
      # Getting list of tempos
      tempo_list = scop.tempo_list 
      rendom_tempo = tempo_list[0] # Sample index
    
      print(random_tempo.measure)
    
      # Sample output
      >>> 1
    

• music21

  • the music21 property returns the Music21 Object for the Tempo object

  • Example

    from music21 import note
    from Scopul import Scopul, Tempo
    
    tempo_mark = Tempo(bpm=300)
    print(tempo_mark.music21)
    
    # Sample output
    >>> <music21.tempo.MetronomeMark Quarter=300>