通过python将MP3转换为midi（TypeError:加载插件失败：mtgmelodia:Melodyia）

Question

我正在尝试编写一些代码，将MP3文件转换为主colab页面中的midi

所以我记得从mp3创建midi文件是一个大项目，我可能很难将个人歌曲或音频文件导入到这个项目中。（MIDI的音频格式，在某些地方是通过人工智能完成的（例如PolyphonicPianoTranscription），AudiotoMIDI conversion projects列表）

因此，我尝试通过此功能将MP3转换为WAV：

def MP3_to_WAV(MP3_file):
   from pydub import AudioSegment
   sound = AudioSegment.from_mp3(MP3_file)
   filename = os.path.basename(MP3_file)
   wav_file_name=output_path+filename.split('.')[0]+'.wav'
   sound.export(wav_file_name, format="wav")
   return wav_file_name

并且尝试通过this指令将WAV转换为MIDI，该函数：

def wav_to_midi(wav_f_n):
   filename2 = os.path.basename(wav_f_n)
   midi_file_name=output_path+filename2.split('.')[0]+'.midi'
   run_comand("python /content/audio_to_midi_melodia/audio_to_midi_melodia.py "+wav_file+' '+ midi_file_name+" 120")
   return midi_file_name
 

但是在我的colab页面（link）的WAV到Midi块代码中，我得到了以下错误：

Vamp::HostExt::PluginLoader: No library found in Vamp path for plugin "mtg-melodia:melodia"
Loading audio...
Extracting melody f0 with MELODIA...
Traceback (most recent call last):
  File "/content/audio_to_midi_melodia/audio_to_midi_melodia.py", line 225, in <module>
    savejams=args.jams)
  File "/content/audio_to_midi_melodia/audio_to_midi_melodia.py", line 174, in audio_to_midi_melodia
    parameters={"voicing": 0.2})
  File "/usr/local/lib/python3.7/dist-packages/vamp/collect.py", line 166, in collect
    plugin, step_size, block_size = vamp.load.load_and_configure(data, sample_rate, plugin_key, parameters, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/vamp/load.py", line 83, in load_and_configure
    vampyhost.ADAPT_CHANNEL_COUNT)
TypeError: Failed to load plugin: mtg-melodia:melodia
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-35-c99e6fb96073> in <module>()
     84     print('\n'+files+'\n')
     85     wav_file=MP3_to_WAV(files)
---> 86     midi_file=wav_to_midi(wav_file)
     87 
     88 

2 frames
<ipython-input-35-c99e6fb96073> in execute(command)
     55         return output
     56     else:
---> 57         raise ProcessException(command, exitCode, output)
     58 
     59 

TypeError: __init__() takes 2 positional arguments but 4 were given

我想这一定是因为python版本不匹配，但这里有人问

谢谢你的关注

Answer 1

看起来根本问题是Vamp::HostExt::PluginLoader: No library found in Vamp path for plugin "mtg-melodia:melodia"

所以要么mtg melodia:melodia的路径需要添加到Vamp路径，要么mtg melodia:melodia需要安装和配置

看起来您正在使用以下url中的说明来设置mtg melodia。您能否重新检查mtg melodia安装和配置的详细信息，您可能错过了一个步骤。
https://ourcodeworld.com/articles/read/983/how-to-extract-the-melody-from-an-audio-file-and-export-it-to-midi-generate-quantized-midi-using-python-in-ubuntu-18-04