Скачать или смотреть How to edit midi notes and volumes using python with music21

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sure! editing midi notes and volumes using the `music21` library in python is a great way to manipulate musical data programmatically. below is a step-by-step tutorial that covers the following:

1. *installation of music21*
2. *loading a midi file*
3. *editing midi notes and volumes*
4. *saving the modified midi file*

step 1: installation of music21

to get started, you need to install the `music21` library. you can do this using pip:



step 2: loading a midi file

first, you need to load a midi file. here's how to do that:



step 3: editing midi notes and volumes

once you have loaded a midi file, you can iterate through the notes and make modifications. here’s an example of how to change the pitch of the notes and adjust their volumes (also known as velocities).



step 4: saving the modified midi file

after editing the notes, you can save the modified stream back to a midi file:



complete example

here’s the complete example code combining all the above steps:



summary

in this tutorial, you learned how to:
load a midi file using `music21`.
edit midi notes by changing their pitch and volume.
save the modified midi file.

feel free to customize the code further based on your needs, such as adjusting different parameters or applying more complex transformations!

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