如何使用 Python 中的长笛乐器从音符中制作 MIDI 文件(music21 库) [英] How to make MIDI file from notes with Flute instrument in Python (music21 library)

问题描述

我有一些笔记，我想要的是用长笛乐器创建 MIDI 文件.但结果是输出 MIDI 文件播放钢琴而不是长笛.我试过其他乐器，但总是一样的，钢琴.这是怎么回事?

I have some notes and what I want is create the MIDI file with Flute instrument. But what happens is that the output MIDI file plays Piano, instead of Flute. I tried other instruments, but it's always the same, Piano. What is going on?

(...)
new_note = note.Note(pattern)
new_note.offset = offset
new_note.storedInstrument = instrument.Piano()
output_notes.append(new_note)
(...)
midi_stream = stream.Stream(output_notes)
midi_stream.write('midi', fp='output.midi')

推荐答案

根据 文档，唯一具有 storedInstrument 属性的类是 note.Unpitched.

According to the documentation, the only class with a storedInstrument property is note.Unpitched.

还有:

Unpitched 对象当前没有任何作用，不应使用.

The Unpitched object does not currently do anything and should not be used.

无论如何，music21/midi/translate.py 中的 testMidiProgramChangeA/B 函数展示了这是如何完成的:只需添加在应该使用它的 Note 之前将对象插入到 Stream 中:

Anyway, the testMidiProgramChangeA/B functions in music21/midi/translate.py show how this is to be done: just add the instrument object into the Stream before the Notes that should use it:

output_notes.append(instrument.Flute())
new_note = ...
output_notes.append(new_note)
...

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