madmom.features.notes¶
This module contains note transcription related functionality.
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madmom.features.notes.load_notes(*args, **kwargs)[source]¶ Load the notes from a file.
Parameters: filename : str or file handle
Input file to load the notes from.
Returns: numpy array
Notes.
Notes
The file format must be (duration and velocity being optional):
‘note_time’ ‘MIDI_note’ [‘duration’ [‘MIDI_velocity’]]
with one note per line and individual fields separated by whitespace.
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madmom.features.notes.expand_notes(notes, duration=0.6, velocity=100)[source]¶ Expand the notes to include all columns.
Parameters: notes : numpy array, shape (num_notes, 2)
Notes, one per row (column definition see notes).
duration : float, optional
Note duration if not defined by notes.
velocity : int, optional
Note velocity if not defined by notes.
Returns: numpy array
Notes (including note duration and velocity).
Notes
The note columns format must be (duration and velocity being optional):
‘note_time’ ‘MIDI_note’ [‘duration’ [‘MIDI_velocity’]]
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madmom.features.notes.write_notes(notes, filename, sep='\t', fmt=None, header='')[source]¶ Write the notes to a file (as many columns as given).
Parameters: notes : numpy array, shape (num_notes, 2)
Notes, one per row (column definition see notes).
filename : str or file handle
Output filename or handle.
sep : str, optional
Separator for the fields.
fmt : list, optional
Format of the fields (i.e. columns, see notes)
header : str, optional
Header to be written (as a comment).
Returns: numpy array
Notes.
Notes
The note columns format must be (duration and velocity being optional):
‘note_time’ ‘MIDI_note’ [‘duration’ [‘MIDI_velocity’]]
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madmom.features.notes.write_midi(notes, filename, duration=0.6, velocity=100)[source]¶ Write the notes to a MIDI file.
Parameters: notes : numpy array, shape (num_notes, 2)
Notes, one per row (column definition see notes).
filename : str
Output MIDI file.
duration : float, optional
Note duration if not defined by notes.
velocity : int, optional
Note velocity if not defined by notes.
Returns: numpy array
Notes (including note length and velocity).
Notes
The note columns format must be (duration and velocity being optional):
‘note_time’ ‘MIDI_note’ [‘duration’ [‘MIDI_velocity’]]
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madmom.features.notes.write_mirex_format(notes, filename, duration=0.6)[source]¶ Write the frequencies of the notes to file (in MIREX format).
Parameters: notes : numpy array, shape (num_notes, 2)
Notes, one per row (column definition see notes).
filename : str or file handle
Output filename or handle.
duration : float, optional
Note duration if not defined by notes.
Returns: numpy array
Notes in MIREX format.
Notes
The note columns format must be (duration and velocity being optional):
‘note_time’ ‘MIDI_note’ [‘duration’ [‘MIDI_velocity’]]
The output format required by MIREX is:
‘onset_time’ ‘offset_time’ ‘note_frequency’