Script to split midi files from a folder, into subsegments. The intent is to extract "patterns" from individual tracks
from pip: glob, mido, numpy, gooey
from github: MusiStrata (my repo: https://github.com/Wally869/MusiStrata)
ADDED GOOEY SUPPORT
Can be called directly from cmd the inputfolder argument can take lists so it is possible to operate on multiple folders at once
# No args
python Splitter.py
# see argparse parameters
python Splitter.py -h
usage: Splitter.py [-h] [-inputfolder INPUTFOLDER]
[-outputfolder OUTPUTFOLDER] [-minmessages MINMESSAGES]
[-exclusionmultiplier EXCLUSIONMULTIPLIER]
[-useinstrumentsound USEINSTRUMENTSOUND]
Split Midi Songs
optional arguments:
-h, --help show this help message and exit
-i INPUTFOLDER [INPUTFOLDER ..]
-o OUTPUTFOLDER
-m MINMESSAGES
Prune tracks with less midi messages than this number
-e EXCLUSIONMULTIPLIER
Multiplier for timedelta messages. Median of timedelta
multiplied by this determines section splitting
-u USEINSTRUMENTSOUND
Use the track instrument, or default to Acoustic Grand Piano
An input file of name "test.mid" will be output in a serie of mid files using the following naming scheme:
Track{TrackID}_{TrackInstrument}-{SectionID}.mid
A report is also generated per song under the name "-----SplitterReport-----.txt". It tracks some metrics, such as number of tracks before/after split, total number of segments, number of segments kept.
It also records parameters used when splitting, and gives a breakdown of the segments recorded
To Note: some segments can be excluded so SectionID is not guaranteed to be continuous
A sample report:
Filename: InputSplitter\test.mid
NbTracksBeforeSplit: 22
NbTracksAfterSplit: 12
NbSegmentsTotal: 46
NbSegmentsKept: 25
Minimum Messages: 20
Exclusion Multiplier: 5
==========
Channel: 0
Instrument: Acoustic Grand Piano
NbMessages: 703
==========
Channel: 1
Instrument: Acoustic Grand Piano
NbMessages: 198
==========
Channel: 2
Instrument: Acoustic Grand Piano
NbMessages: 503
- Better threshold selection than naive full-song median multiplication, and do it by channel
- Implement threading (writing midi can be bottleneck I guess? Or handle songs seperately)
- Fix errors whenever possible