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- 本教程同步发布在：
- 个人网站： `https://oeasy.org`
- 蓝桥云课： `https://www.lanqiao.cn/courses/3584`
- GitHub： `https://github.com/overmind1980/oeasy-python-tutorial`
- Gitee： `https://gitee.com/overmind1980/oeasypython`
---- oeasy Python 0755
- 这是 oeasy 系统化 Python 教程，从基础一步步讲，扎实、完整、不跳步。愿意花时间学，就能真正学会。
- 我们首先要从零开始
- 安装midi软件
sudo apt update
yes | sudo apt install rosegarden
- 也可以直接运行
rosegarden
- 运行成功
- 尝试使用python写mid文件
pip install MIDIUtil
- 安装成功后
- 准备用python写midi文件
from midiutil import MIDIFile
# create MIDI file
midi_file = MIDIFile(1)
# add a track
track = 0
time = 0
midi_file.addTrackName(track, time, "Sample Track")
midi_file.addTempo(track, time, 120)
# add notes to the track
channel = 0
pitch = 60 # C3
duration = 1 # 1 beat
volume = 100 # max volume
for i in range(0, 8):
midi_file.addNote(track, channel, pitch+i, time+i*duration, duration, volume)
# write MIDI file to disk
with open("output.mid", "wb") as output_file:
midi_file.writeFile(output_file)- 运行之后
- 尝试打开output.mid
- 查看钢琴卷帘
- 可以修改为大调音阶吗？
from midiutil import MIDIFile
# create MIDI file
midi_file = MIDIFile(1)
# add a track
track = 0
time = 0
midi_file.addTrackName(track, time, "Sample Track")
midi_file.addTempo(track, time, 120)
# add notes to the track
channel = 0
pitch = 72 # C4
duration = 1 # 1 beat
volume = 100 # max volume
j = 0
for i in [0,2,4,5,7,9,11,12]:
midi_file.addNote(track, channel, pitch+i, time+j*duration, duration, volume)
j = j + 1
# write MIDI file to disk
with open("output.mid", "wb") as output_file:
midi_file.writeFile(output_file)
- 修改后结果
- 有更标准的写法吗？
firefox https://pypi.org/project/MIDIUtil/
- 文档状态
- 可以跑跑其中的代码吗？
#!/usr/bin/env python
from midiutil import MIDIFile
degrees = [60, 62, 64, 65, 67, 69, 71, 72] # MIDI note number
track = 0
channel = 0
time = 0 # In beats
duration = 1 # In beats
tempo = 60 # In BPM
volume = 100 # 0-127, as per the MIDI standard
MyMIDI = MIDIFile(1) # One track, defaults to format 1 (tempo track is created
# automatically)
MyMIDI.addTempo(track, time, tempo)
for i, pitch in enumerate(degrees):
MyMIDI.addNote(track, channel, pitch, time + i, duration, volume)
with open("major-scale.mid", "wb") as output_file:
MyMIDI.writeFile(output_file)
- 输出了一系列的 大调音阶
- major-scale
- 打开之后查看到mid状态
- 确实是大调音阶
from mido import MidiFile, MidiTrack, Message
# 创建一个新的 MIDI 文件
midi = MidiFile()
# 创建右手旋律轨道
melody_track = MidiTrack()
midi.tracks.append(melody_track)
melody_track.append(Message('program_change', program=0, time=0))
# 右手旋律（梁祝主题旋律）
right_hand_notes = [
(64, 960), (67, 720), (69, 240),
(72, 720), (74, 240), (69, 240), (72, 240), (67, 480),
(79, 720), (84, 240), (81, 240), (79, 240), (76, 240), (79, 240),
(74, 1920),
(74, 480), (74, 240), (76, 240), (71, 480), (69, 480),
(67, 720), (69, 240), (72, 480), (74, 480),
(64, 480), (72, 480), (69, 240), (67, 240), (69, 240), (72, 240),
(67, 1920),
(76,720),(79,240),(71,480),(74,480),
(69,240),(72,240),(67,1440),
(64,360),(67,120),(64,480),(67,240),(69,240),(71,240),(74,240),
(69,1440),(67,240),(69,240),
(72,720),(74,240),(79,480),(76,480),
(74,480),(76,240),(74,240),(72,480),(69,240),(67,240),
(64,960),(72,960),
(69,360),(72,120),(69,240),(67,240),(64,240),(67,240),(69,240),(72,240),
(67,1440),(76,240),(79,240),
(74,240),(76,240),(74,240),(72,240),(71,480),(69,480),
(67,1440),(64,240),(67,240),
(62,240),(64,240),(62,240),(60,240),(59,480),(57,480),
(55,1920),
]
# 左手伴奏（简单的低音进行）
left_hand_notes = [
(36,480),(43,480),(45,480),(48,480),
(40,480),(48,480),(45,480),(43,480),
(36,480),(43,480),(45,480),(48,480),
(43,480),(48,480),(50,480),(55,480),
(41,240),(50,240),(53,240),(57,1200),
(40,240),(47,240),(50,240),(52,240),(55,960),
(45,240),(52,240),(57,240),(48,240),(52,960),
(31,240),(38,240),(43,240),(48,240),(55,960),
(52,240),(59,240),(62,240),(64,240),(55,960),
(45,240),(52,240),(55,240),(57,240),(60,960),
(40,240),(47,240),(50,240),(52,240),(55,960),
(45,240),(52,240),(55,240),(57,240),(60,240),(64,240),(0,480),
(36,240),(43,240),(45,240),(48,1200),
(43,240),(50,240),(55,240),(57,1200),
(45,240),(52,240),(55,240),(57,1200),
(38,240),(45,240),(48,240),(50,240),(55,960),
(31,240),(38,240),(43,240),(48,240),(55,480),(72,480),
(69,480),(67,480),(62,480),(64,480),
(55,1440),(60,480),
(57,480),(55,480),(50,480),(52,480),
(43,1920)
]
# 创建右手旋律轨道
for note, duration in right_hand_notes:
melody_track.append(Message('note_on', note=note, velocity=80, time=0))
melody_track.append(Message('note_off', note=note, velocity=80, time=duration))
# 创建左手轨道
bass_track = MidiTrack()
midi.tracks.append(bass_track)
bass_track.append(Message('program_change', program=0, time=0))
# 添加左手伴奏
for note, duration in left_hand_notes:
bass_track.append(Message('note_on', note=note, velocity=60, time=0))
bass_track.append(Message('note_off', note=note, velocity=60, time=duration))
# 创建中国传统打击乐轨道（通道 9）
drum_track = MidiTrack()
midi.tracks.append(drum_track)
drum_pattern = [
(56, 960), # 大鼓
(57, 960), # 小堂鼓
(58, 480), # 铙钹
(59, 480), # 木鱼
(60, 960), # 碰铃
(61, 480), # 云锣
(56, 960), (58, 480), (59, 480), (57, 960), (60, 960), (61, 480)
]
# 让打击乐持续半首歌
drum_repeats = len(right_hand_notes) // len(drum_pattern) // 2
for _ in range(drum_repeats):
for note, duration in drum_pattern:
drum_track.append(Message('note_on', note=note, velocity=80, time=0, channel=9))
drum_track.append(Message('note_off', note=note, velocity=80, time=duration, channel=9))
# 保存 MIDI 文件
midi.save('liangzhu_piano_with_traditional_drums.mid')
print("MIDI 文件已保存，包含左手伴奏和中国传统打击乐！")
- 这次从零开始
- 安装了midi软件
- 使用python制作了mid文件
- 不过
- 究竟什么是mid呢？🤔
- 我们下次再说！👋
- 本文来自 oeasy Python 系统教程。
- 想完整、扎实学 Python，
- 搜索 oeasy 即可。