:orphan:

Quantization Comparison
=======================

*Example script* (scamp): `examples/Notation & engraving/Quantization/quantization.py <https://github.com/MarcTheSpark/scamp/blob/main/examples/Notation & engraving/Quantization/quantization.py>`__

*Download:* :download:`quantization.py <downloads/notation_engraving_quantization_quantization/quantization.py>`

Records a loose piano improvisation against a metronome, then plays back the quantized version.

*Topics:* :doc:`Notation & engraving › Quantization <notation_engraving>`

.. raw:: html

   <div style="margin:0.6em 0"><audio controls preload="none" src="../_static/media/Notation%20%26%20engraving/Quantization/quantization.mp3" style="width:100%;max-width:520px"></audio></div>

.. code-block:: python

   from scamp import *
   import random


   s = Session()

   drum = s.new_part("metronome", (0, 116))
   piano = s.new_part("piano")

   s.start_transcribing()


   recording = True

   random.seed(4)


   def piano_part():
       while recording:
           if random.random() < 0.5:
               piano.play_note(50 + random.random()*20, 0.5, random.random() * 1.5)
           else:
               piano.play_chord([50 + random.random()*20, 50 + random.random()*20], 0.5, random.random() * 1.5)


   s.fork(piano_part)

   print("Making Recording...", end="")
   for _ in range(8):
       drum.play_note(80, 1, 1)

   recording = False
   performance = s.stop_transcribing()
   quantized_performance = performance.quantized(
       QuantizationScheme([
           MeasureQuantizationScheme.from_time_signature("4/4", max_divisor=5, max_divisor_indigestibility=3)
       ])
   )

   print("Done")

   while True:
       print("Replaying recording with quantization")
       wait(1)
       quantized_performance.play()

       print("Replaying recording without quantization")
       wait(1)
       performance.play()